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Difference between revisions of "Developing a MVC Component/Adding verifications"

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This tutorial is for {{JVer|1.6}}
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{{version/tutor|2.5}}
 
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{{Chunk:Developing a Model-View-Controller (MVC) Component for Joomla!2.5 - Contents}}
== Articles in this series ==
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{{Chunk:Developing a Model-View-Controller (MVC) Component for Joomla!1.6 - Contents}}
+
  
 
== Introduction ==
 
== Introduction ==
This tutorial is part of the [[Developing a Model-View-Controller (MVC) Component for Joomla!1.6]] tutorial. You are encouraged to read the previous parts of the tutorial before reading this.
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This tutorial is part of the [[Developing a Model-View-Controller (MVC) Component for Joomla!2.5]] tutorial. You are encouraged to read the previous parts of the tutorial before reading this.
 +
 
 +
See [[Form validation]] for some more general info on form validation (rules).
  
 
== Verifying the form (client side) ==
 
== Verifying the form (client side) ==
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JHtml::_('behavior.formvalidation');
 
JHtml::_('behavior.formvalidation');
 
?>
 
?>
<form action="<?php echo JRoute::_('index.php?option=com_helloworld&layout=edit&id='.(int) $this->item->id); ?>" method="post" name="adminForm" id="helloworld-form" class="form-validate">
+
<form action="<?php echo JRoute::_('index.php?option=com_helloworld&layout=edit&id='.(int) $this->item->id); ?>"
 +
      method="post" name="adminForm" id="helloworld-form" class="form-validate">
 
<fieldset class="adminform">
 
<fieldset class="adminform">
 
<legend><?php echo JText::_( 'COM_HELLOWORLD_HELLOWORLD_DETAILS' ); ?></legend>
 
<legend><?php echo JText::_( 'COM_HELLOWORLD_HELLOWORLD_DETAILS' ); ?></legend>
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You may have noted that the html form contained in the ''[[#admin/views/helloworld/tmpl/edit.php|admin/views/helloworld/tmpl/edit.php]]'' file now has the ''form-validate'' css class. And that we added a ''JHTML::_('behavior.formvalidation');'' call to tell Joomla!1.6 to use its javascript form validation.
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You may have noted that the html form contained in the ''[[#admin/views/helloworld/tmpl/edit.php|admin/views/helloworld/tmpl/edit.php]]'' file now has the ''form-validate'' css class. And that we added a ''JHTML::_('behavior.formvalidation');'' call to tell Joomla to use its javascript form validation.
  
 
Modify the ''admin/models/forms/helloworld.xml'' file to indicate that the ''greeting'' field has to be verified:
 
Modify the ''admin/models/forms/helloworld.xml'' file to indicate that the ''greeting'' field has to be verified:
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else
 
else
 
{
 
{
alert(Joomla.JText._('COM_HELLOWORLD_HELLOWORLD_ERROR_UNACCEPTABLE','Some values are unacceptable'));
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alert(Joomla.JText._('COM_HELLOWORLD_HELLOWORLD_ERROR_UNACCEPTABLE',
 +
                    'Some values are unacceptable'));
 
return false;
 
return false;
 
}
 
}
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</span>
 
</span>
  
This function will verify that all forms which have the ''"form-validate"'' css class are valid. Note that it will display an alert message translated by the Joomla!1.6 framework.
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This function will verify that all forms which have the ''"form-validate"'' css class are valid. Note that it will display an alert message translated by the Joomla framework.
  
 
The ''HelloWorldViewHelloWorld'' view class has to be modified to use these javascript files:
 
The ''HelloWorldViewHelloWorld'' view class has to be modified to use these javascript files:
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protected function addToolBar()  
 
protected function addToolBar()  
 
{
 
{
JRequest::setVar('hidemainmenu', true);
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$input = JFactory::getApplication()->input;
 +
$input->set('hidemainmenu', true);
 
$isNew = ($this->item->id == 0);
 
$isNew = ($this->item->id == 0);
JToolBarHelper::title($isNew ? JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_NEW') : JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_EDIT'), 'helloworld');
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JToolBarHelper::title($isNew ? JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_NEW')
 +
                            : JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_EDIT'), 'helloworld');
 
JToolBarHelper::save('helloworld.save');
 
JToolBarHelper::save('helloworld.save');
 
JToolBarHelper::cancel('helloworld.cancel', $isNew ? 'JTOOLBAR_CANCEL' : 'JTOOLBAR_CLOSE');
 
JToolBarHelper::cancel('helloworld.cancel', $isNew ? 'JTOOLBAR_CANCEL' : 'JTOOLBAR_CLOSE');
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$isNew = ($this->item->id < 1);
 
$isNew = ($this->item->id < 1);
 
$document = JFactory::getDocument();
 
$document = JFactory::getDocument();
$document->setTitle($isNew ? JText::_('COM_HELLOWORLD_HELLOWORLD_CREATING') : JText::_('COM_HELLOWORLD_HELLOWORLD_EDITING'));
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$document->setTitle($isNew ? JText::_('COM_HELLOWORLD_HELLOWORLD_CREATING')
 +
                          : JText::_('COM_HELLOWORLD_HELLOWORLD_EDITING'));
 
$document->addScript(JURI::root() . $this->script);
 
$document->addScript(JURI::root() . $this->script);
$document->addScript(JURI::root() . "/administrator/components/com_helloworld/views/helloworld/submitbutton.js");
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$document->addScript(JURI::root() . "/administrator/components/com_helloworld"
 +
                                  . "/views/helloworld/submitbutton.js");
 
JText::script('COM_HELLOWORLD_HELLOWORLD_ERROR_UNACCEPTABLE');
 
JText::script('COM_HELLOWORLD_HELLOWORLD_ERROR_UNACCEPTABLE');
 
}
 
}
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* verifies if the model has no error;
 
* verifies if the model has no error;
 
* adds two javascript files;
 
* adds two javascript files;
* injects javascript translation using the Joomla!1.6 ''JText::script'' function.
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* injects javascript translation using the Joomla ''JText::script'' function.
  
 
The final step is to implement a ''getScript'' function in the ''HelloWorldModelHelloWorld'' model:
 
The final step is to implement a ''getScript'' function in the ''HelloWorldModelHelloWorld'' model:
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* @param array Configuration array for model. Optional.
 
* @param array Configuration array for model. Optional.
 
* @return JTable A database object
 
* @return JTable A database object
* @since 1.6
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* @since 2.5
 
*/
 
*/
 
public function getTable($type = 'HelloWorld', $prefix = 'HelloWorldTable', $config = array())  
 
public function getTable($type = 'HelloWorld', $prefix = 'HelloWorldTable', $config = array())  
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* @param boolean $loadData True if the form is to load its own data (default case), false if not.
 
* @param boolean $loadData True if the form is to load its own data (default case), false if not.
 
* @return mixed A JForm object on success, false on failure
 
* @return mixed A JForm object on success, false on failure
* @since 1.6
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* @since 2.5
 
*/
 
*/
 
public function getForm($data = array(), $loadData = true)  
 
public function getForm($data = array(), $loadData = true)  
 
{
 
{
 
// Get the form.
 
// Get the form.
$form = $this->loadForm('com_helloworld.helloworld', 'helloworld', array('control' => 'jform', 'load_data' => $loadData));
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$form = $this->loadForm('com_helloworld.helloworld', 'helloworld',
 +
                        array('control' => 'jform', 'load_data' => $loadData));
 
if (empty($form))  
 
if (empty($form))  
 
{
 
{
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*
 
*
 
* @return mixed The data for the form.
 
* @return mixed The data for the form.
* @since 1.6
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* @since 2.5
 
*/
 
*/
 
protected function loadFormData()  
 
protected function loadFormData()  
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== Verifying the form (server side) ==
 
== Verifying the form (server side) ==
Verifying the form on the server side is done by inheritance of ''JControllerForm'' class. We have specified in the ''[[#admin/models/forms/helloworld.xml|admin/models/forms/helloworld.xml]]'' file that the validate server function will used a ''greeting.php'' file.
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Verifying the form on the server side is done by inheritance of ''JControllerForm'' class. We have specified in the ''[[#admin/models/forms/helloworld.xml|admin/models/forms/helloworld.xml]]'' file that the validate server function will use a ''greeting.php'' file.
  
 
With your favorite file manager and editor, put a ''admin/models/rules/greeting.php'' file containing:
 
With your favorite file manager and editor, put a ''admin/models/rules/greeting.php'' file containing:
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* @access protected
 
* @access protected
 
* @var string
 
* @var string
* @since 1.6
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* @since 2.5
 
*/
 
*/
 
protected $regex = '^[^0-9]+$';
 
protected $regex = '^[^0-9]+$';
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Content of your code directory
 
Content of your code directory
 
* ''[[#helloworld.xml|helloworld.xml]]''
 
* ''[[#helloworld.xml|helloworld.xml]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|site/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_02#site/helloworld.php|site/helloworld.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_02#site/helloworld.php|site/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_02#site/controller.php|site/controller.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_02#site/controller.php|site/controller.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|site/views/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/views/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|site/views/helloworld/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/views/helloworld/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_04#site/views/helloworld/view.html.php|site/views/helloworld/view.html.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_04#site/views/helloworld/view.html.php|site/views/helloworld/view.html.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|site/views/helloworld/tmpl/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/views/helloworld/tmpl/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_06#site/views/helloworld/tmpl/default.xml|site/views/helloworld/tmpl/default.xml]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#site/views/helloworld/tmpl/default.xml|site/views/helloworld/tmpl/default.xml]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_02#site/views/helloworld/tmpl/default.php|site/views/helloworld/tmpl/default.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_02#site/views/helloworld/tmpl/default.php|site/views/helloworld/tmpl/default.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|site/models/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/models/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_06#site/models/helloworld.php|site/models/helloworld.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#site/models/helloworld.php|site/models/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|site/language/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/language/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|site/language/en-GB/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/language/en-GB/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_08#site/language/en-GB/en-GB.com_helloworld.ini|site/language/en-GB/en-GB.com_helloworld.ini]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_08#site/language/en-GB/en-GB.com_helloworld.ini|site/language/en-GB/en-GB.com_helloworld.ini]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_10#admin/helloworld.php|admin/helloworld.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_10#admin/helloworld.php|admin/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_07#admin/controller.php|admin/controller.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/controller.php|admin/controller.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/sql/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/sql/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_06#admin/sql/install.mysql.utf8.sql|admin/sql/install.mysql.utf8.sql]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/sql/install.mysql.utf8.sql|admin/sql/install.mysql.utf8.sql]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_06#admin/sql/uninstall.mysql.utf8.sql|admin/sql/uninstall.mysql.utf8.sql]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/sql/uninstall.mysql.utf8.sql|admin/sql/uninstall.mysql.utf8.sql]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/sql/updates/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/sql/updates/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/sql/updates/mysql/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/sql/updates/mysql/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#admin/sql/updates/mysql/0.0.1.sql|admin/sql/updates/mysql/0.0.1.sql]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#admin/sql/updates/mysql/0.0.1.sql|admin/sql/updates/mysql/0.0.1.sql]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_06#admin/sql/install.mysql.utf8.sql|admin/sql/updates/mysql/0.0.6.sql]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/sql/install.mysql.utf8.sql|admin/sql/updates/mysql/0.0.6.sql]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/models/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/models/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/models/fields/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/models/fields/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_06#admin/models/fields/helloworld.php|admin/models/fields/helloworld.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/models/fields/helloworld.php|admin/models/fields/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/models/forms/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/models/forms/index.html]]''
 
* ''[[#admin/models/forms/helloworld.xml|admin/models/forms/helloworld.xml]]''
 
* ''[[#admin/models/forms/helloworld.xml|admin/models/forms/helloworld.xml]]''
 
* ''[[#admin/models/forms/helloworld.js|admin/models/forms/helloworld.js]]''
 
* ''[[#admin/models/forms/helloworld.js|admin/models/forms/helloworld.js]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/models/rules/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/models/rules/index.html]]''
 
* ''[[#admin/models/rules/greeting.php|admin/models/rules/greeting.php]]''
 
* ''[[#admin/models/rules/greeting.php|admin/models/rules/greeting.php]]''
 
* ''[[#admin/models/helloworld.php|admin/models/helloworld.php]]''
 
* ''[[#admin/models/helloworld.php|admin/models/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_09#admin/models/helloworlds.php|admin/models/helloworlds.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_09#admin/models/helloworlds.php|admin/models/helloworlds.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/views/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/views/helloworlds/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/helloworlds/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_10#admin/views/helloworlds/view.html.php|admin/views/helloworlds/view.html.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_10#admin/views/helloworlds/view.html.php|admin/views/helloworlds/view.html.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/views/helloworlds/tmpl/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/helloworlds/tmpl/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_09#admin/views/helloworlds/tmpl/default.php|admin/views/helloworlds/tmpl/default.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_09#admin/views/helloworlds/tmpl/default.php|admin/views/helloworlds/tmpl/default.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_07#admin/views/helloworlds/tmpl/default_head.php|admin/views/helloworlds/tmpl/default_head.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/views/helloworlds/tmpl/default_head.php|admin/views/helloworlds/tmpl/default_head.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_07#admin/views/helloworlds/tmpl/default_body.php|admin/views/helloworlds/tmpl/default_body.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/views/helloworlds/tmpl/default_body.php|admin/views/helloworlds/tmpl/default_body.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_07#admin/views/helloworlds/tmpl/default_foot.php|admin/views/helloworlds/tmpl/default_foot.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/views/helloworlds/tmpl/default_foot.php|admin/views/helloworlds/tmpl/default_foot.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/views/helloworld/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/helloworld/index.html]]''
 
* ''[[#admin/views/helloworld/view.html.php|admin/views/helloworld/view.html.php]]''
 
* ''[[#admin/views/helloworld/view.html.php|admin/views/helloworld/view.html.php]]''
 
* ''[[#admin/views/helloworld/submitbutton.js|admin/views/helloworld/submitbutton.js]]''
 
* ''[[#admin/views/helloworld/submitbutton.js|admin/views/helloworld/submitbutton.js]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/views/helloworld/tmpl/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/helloworld/tmpl/index.html]]''
 
* ''[[#admin/views/helloworld/tmpl/edit.php|admin/views/helloworld/tmpl/edit.php]]''
 
* ''[[#admin/views/helloworld/tmpl/edit.php|admin/views/helloworld/tmpl/edit.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/tables/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/tables/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_06#admin/tables/helloworld.php|admin/tables/helloworld.php]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/tables/helloworld.php|admin/tables/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_10#admin/language/en-GB/en-GB.com_helloworld.ini|admin/language/en-GB/en-GB.com_helloworld.ini]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_10#admin/language/en-GB/en-GB.com_helloworld.ini|admin/language/en-GB/en-GB.com_helloworld.ini]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_08#admin/language/en-GB/en-GB.com_helloworld.sys.ini|admin/language/en-GB/en-GB.com_helloworld.sys.ini]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_08#admin/language/en-GB/en-GB.com_helloworld.sys.ini|admin/language/en-GB/en-GB.com_helloworld.sys.ini]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|admin/controllers/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/controllers/index.html]]''
 
* ''[[#admin/controllers/helloworld.php|admin/controllers/helloworld.php]]''
 
* ''[[#admin/controllers/helloworld.php|admin/controllers/helloworld.php]]''
 
* ''[[#admin/controllers/helloworlds.php|admin/controllers/helloworlds.php]]''
 
* ''[[#admin/controllers/helloworlds.php|admin/controllers/helloworlds.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_08#language/en-GB/en-GB.ini|language/en-GB/en-GB.ini]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_08#language/en-GB/en-GB.ini|language/en-GB/en-GB.ini]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|media/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|media/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!1.6_-_Part_01#index.html|media/images/index.html]]''
+
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|media/images/index.html]]''
 
* ''media/images/tux-16x16.png''
 
* ''media/images/tux-16x16.png''
 
* ''media/images/tux-48x48.png''
 
* ''media/images/tux-48x48.png''
  
Create a compressed file of this directory or directly download the [http://joomlacode.org/gf/download/frsrelease/11394/58409/com_helloworld-1.6-part11.zip archive] and install it using the extension manager of Joomla!1.6. You can add a menu item of this component using the menu manager in the backend.
+
Create a compressed file of this directory or directly download the [http://joomlacode.org/gf/download/frsrelease/11394/58409/com_helloworld-1.6-part11.zip archive] and install it using the extension manager of Joomla. You can add a menu item of this component using the menu manager in the backend.
  
 
<span id="helloworld.xml">
 
<span id="helloworld.xml">
Line 401: Line 408:
 
<source lang="xml">
 
<source lang="xml">
 
<?xml version="1.0" encoding="utf-8"?>
 
<?xml version="1.0" encoding="utf-8"?>
<extension type="component" version="1.6.0" method="upgrade">
+
<extension type="component" version="2.5.0" method="upgrade">
  
 
<name>COM_HELLOWORLD</name>
 
<name>COM_HELLOWORLD</name>
<!-- The following elements are optional and free of formatting conttraints -->
+
<!-- The following elements are optional and free of formatting constraints -->
 
<creationDate>November 2009</creationDate>
 
<creationDate>November 2009</creationDate>
 
<author>John Doe</author>
 
<author>John Doe</author>
Line 426: Line 433:
 
</sql>
 
</sql>
 
</uninstall>
 
</uninstall>
<update> <!-- Runs on update; New in 1.6 -->
+
<update> <!-- Runs on update; New in 2.5 -->
 
<schemas>
 
<schemas>
 
<schemapath type="mysql">sql/updates/mysql</schemapath>
 
<schemapath type="mysql">sql/updates/mysql</schemapath>
Line 485: Line 492:
  
 
== Navigate ==
 
== Navigate ==
 
+
[[Developing a Model-View-Controller (MVC) Component for Joomla!2.5 - Part 10|Prev: Adding decorations to the backend]]
[[Developing a Model-View-Controller (MVC) Component for Joomla!1.6 - Part 10|Prev: Adding decorations to the backend]]
+
[[Developing a Model-View-Controller (MVC) Component for Joomla!2.5 - Part 12|Next: Adding categories]]
[[Developing a Model-View-Controller (MVC) Component for Joomla!1.6 - Part 12|Next: Adding categories]]
+
  
 
== Contributors ==
 
== Contributors ==
 
*[[User:cdemko|Christophe Demko]]
 
*[[User:cdemko|Christophe Demko]]
 +
*[[User:oaksu|Ozgur Aksu]]
  
 
[[Category:Development]]
 
[[Category:Development]]
[[category:Joomla! 1.6]]
+
[[Category:Joomla! 1.6]]
[[category:Manual]]
+
[[Category:Joomla! 1.7]]
 +
[[Category:Joomla! 2.5]]

Revision as of 17:10, 30 September 2012


Introduction

This tutorial is part of the Developing a Model-View-Controller (MVC) Component for Joomla!2.5 tutorial. You are encouraged to read the previous parts of the tutorial before reading this.

See Form validation for some more general info on form validation (rules).

Verifying the form (client side)

Forms can be verified on the client side using javascript code.

In the admin/views/helloworld/tmpl/edit.php file, put these lines

admin/views/helloworld/tmpl/edit.php

<?php
// No direct access
defined('_JEXEC') or die('Restricted access');
JHtml::_('behavior.tooltip');
JHtml::_('behavior.formvalidation');
?>
<form action="<?php echo JRoute::_('index.php?option=com_helloworld&layout=edit&id='.(int) $this->item->id); ?>"
      method="post" name="adminForm" id="helloworld-form" class="form-validate">
        <fieldset class="adminform">
                <legend><?php echo JText::_( 'COM_HELLOWORLD_HELLOWORLD_DETAILS' ); ?></legend>
                <?php foreach($this->form->getFieldset() as $field): ?>
                        <?php if (!$field->hidden): ?>
                                <?php echo $field->label; ?>
                        <?php endif; ?>
                        <?php echo $field->input; ?>
                <?php endforeach; ?>
        </fieldset>
        <div>
                <input type="hidden" name="task" value="helloworld.edit" />
                <?php echo JHtml::_('form.token'); ?>
        </div>
</form>


You may have noted that the html form contained in the admin/views/helloworld/tmpl/edit.php file now has the form-validate css class. And that we added a JHTML::_('behavior.formvalidation'); call to tell Joomla to use its javascript form validation.

Modify the admin/models/forms/helloworld.xml file to indicate that the greeting field has to be verified:

<?xml version="1.0" encoding="utf-8"?>
<form
        addrulepath="/administrator/components/com_helloworld/models/rules"
>
        <fieldset>
                <field
                        name="id"
                        type="hidden"
                />
                <field
                        name="greeting"
                        type="text"
                        label="COM_HELLOWORLD_HELLOWORLD_GREETING_LABEL"
                        description="COM_HELLOWORLD_HELLOWORLD_GREETING_DESC"
                        size="40"
                        class="inputbox validate-greeting"
                        validate="greeting"
                        required="true"
                        default=""
                />
        </fieldset>
</form>

Note for the moment that the css class is now "inputbox validate-greeting" and that the attribute required is set to true. It means that this field is required and has to be verified by a handler of the form validator framework of Joomla

With your favorite file manager and editor put a file admin/models/forms/helloworld.js containing

admin/models/forms/helloworld.js

window.addEvent('domready', function() {
        document.formvalidator.setHandler('greeting',
                function (value) {
                        regex=/^[^0-9]+$/;
                        return regex.test(value);
        });
});

It adds a handler to the form validator of Joomla for fields having the "validate-greeting" css class. Each time the greeting field is modified, the handler will be executed to verify its validity (no digits).

The final step is to verify the form when the save button is clicked.

With your favorite file manager and editor put a file admin/views/helloworld/submitbutton.js containing

admin/views/helloworld/submitbutton.js

Joomla.submitbutton = function(task)
{
        if (task == '')
        {
                return false;
        }
        else
        {
                var isValid=true;
                var action = task.split('.');
                if (action[1] != 'cancel' && action[1] != 'close')
                {
                        var forms = $$('form.form-validate');
                        for (var i=0;i<forms.length;i++)
                        {
                                if (!document.formvalidator.isValid(forms[i]))
                                {
                                        isValid = false;
                                        break;
                                }
                        }
                }
 
                if (isValid)
                {
                        Joomla.submitform(task);
                        return true;
                }
                else
                {
                        alert(Joomla.JText._('COM_HELLOWORLD_HELLOWORLD_ERROR_UNACCEPTABLE',
                                             'Some values are unacceptable'));
                        return false;
                }
        }
}

This function will verify that all forms which have the "form-validate" css class are valid. Note that it will display an alert message translated by the Joomla framework.

The HelloWorldViewHelloWorld view class has to be modified to use these javascript files:

admin/views/helloworld/view.html.php

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import Joomla view library
jimport('joomla.application.component.view');
 
/**
 * HelloWorld View
 */
class HelloWorldViewHelloWorld extends JView
{
        /**
         * display method of Hello view
         * @return void
         */
        public function display($tpl = null) 
        {
                // get the Data
                $form = $this->get('Form');
                $item = $this->get('Item');
                $script = $this->get('Script');
 
                // Check for errors.
                if (count($errors = $this->get('Errors'))) 
                {
                        JError::raiseError(500, implode('<br />', $errors));
                        return false;
                }
                // Assign the Data
                $this->form = $form;
                $this->item = $item;
                $this->script = $script;
 
                // Set the toolbar
                $this->addToolBar();
 
                // Display the template
                parent::display($tpl);
 
                // Set the document
                $this->setDocument();
        }
 
        /**
         * Setting the toolbar
         */
        protected function addToolBar() 
        {
                $input = JFactory::getApplication()->input;
                $input->set('hidemainmenu', true);
                $isNew = ($this->item->id == 0);
                JToolBarHelper::title($isNew ? JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_NEW')
                                             : JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_EDIT'), 'helloworld');
                JToolBarHelper::save('helloworld.save');
                JToolBarHelper::cancel('helloworld.cancel', $isNew ? 'JTOOLBAR_CANCEL' : 'JTOOLBAR_CLOSE');
        }
        /**
         * Method to set up the document properties
         *
         * @return void
         */
        protected function setDocument() 
        {
                $isNew = ($this->item->id < 1);
                $document = JFactory::getDocument();
                $document->setTitle($isNew ? JText::_('COM_HELLOWORLD_HELLOWORLD_CREATING')
                                           : JText::_('COM_HELLOWORLD_HELLOWORLD_EDITING'));
                $document->addScript(JURI::root() . $this->script);
                $document->addScript(JURI::root() . "/administrator/components/com_helloworld"
                                                  . "/views/helloworld/submitbutton.js");
                JText::script('COM_HELLOWORLD_HELLOWORLD_ERROR_UNACCEPTABLE');
        }
}

This view now

  • verifies if the model has no error;
  • adds two javascript files;
  • injects javascript translation using the Joomla JText::script function.

The final step is to implement a getScript function in the HelloWorldModelHelloWorld model:

admin/models/helloworld.php

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import Joomla modelform library
jimport('joomla.application.component.modeladmin');
 
/**
 * HelloWorld Model
 */
class HelloWorldModelHelloWorld extends JModelAdmin
{
        /**
         * Returns a reference to the a Table object, always creating it.
         *
         * @param       type    The table type to instantiate
         * @param       string  A prefix for the table class name. Optional.
         * @param       array   Configuration array for model. Optional.
         * @return      JTable  A database object
         * @since       2.5
         */
        public function getTable($type = 'HelloWorld', $prefix = 'HelloWorldTable', $config = array()) 
        {
                return JTable::getInstance($type, $prefix, $config);
        }
        /**
         * Method to get the record form.
         *
         * @param       array   $data           Data for the form.
         * @param       boolean $loadData       True if the form is to load its own data (default case), false if not.
         * @return      mixed   A JForm object on success, false on failure
         * @since       2.5
         */
        public function getForm($data = array(), $loadData = true) 
        {
                // Get the form.
                $form = $this->loadForm('com_helloworld.helloworld', 'helloworld',
                                        array('control' => 'jform', 'load_data' => $loadData));
                if (empty($form)) 
                {
                        return false;
                }
                return $form;
        }
        /**
         * Method to get the script that have to be included on the form
         *
         * @return string       Script files
         */
        public function getScript() 
        {
                return 'administrator/components/com_helloworld/models/forms/helloworld.js';
        }
        /**
         * Method to get the data that should be injected in the form.
         *
         * @return      mixed   The data for the form.
         * @since       2.5
         */
        protected function loadFormData() 
        {
                // Check the session for previously entered form data.
                $data = JFactory::getApplication()->getUserState('com_helloworld.edit.helloworld.data', array());
                if (empty($data)) 
                {
                        $data = $this->getItem();
                }
                return $data;
        }
}

Verifying the form (server side)

Verifying the form on the server side is done by inheritance of JControllerForm class. We have specified in the admin/models/forms/helloworld.xml file that the validate server function will use a greeting.php file.

With your favorite file manager and editor, put a admin/models/rules/greeting.php file containing:

admin/models/rules/greeting.php

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
 
// import Joomla formrule library
jimport('joomla.form.formrule');
 
/**
 * Form Rule class for the Joomla Framework.
 */
class JFormRuleGreeting extends JFormRule
{
        /**
         * The regular expression.
         *
         * @access      protected
         * @var         string
         * @since       2.5
         */
        protected $regex = '^[^0-9]+$';
}

Packaging the component

Content of your code directory

Create a compressed file of this directory or directly download the archive and install it using the extension manager of Joomla. You can add a menu item of this component using the menu manager in the backend.

helloworld.xml

<?xml version="1.0" encoding="utf-8"?>
<extension type="component" version="2.5.0" method="upgrade">
 
        <name>COM_HELLOWORLD</name>
        <!-- The following elements are optional and free of formatting constraints -->
        <creationDate>November 2009</creationDate>
        <author>John Doe</author>
        <authorEmail>john.doe@example.org</authorEmail>
        <authorUrl>http://www.example.org</authorUrl>
        <copyright>Copyright Info</copyright>
        <license>License Info</license>
        <!--  The version string is recorded in the components table -->
        <version>0.0.11</version>
        <!-- The description is optional and defaults to the name -->
        <description>COM_HELLOWORLD_DESCRIPTION</description>
 
        <install> <!-- Runs on install -->
                <sql>
                        <file driver="mysql" charset="utf8">sql/install.mysql.utf8.sql</file>
                </sql>
        </install>
        <uninstall> <!-- Runs on uninstall -->
                <sql>
                        <file driver="mysql" charset="utf8">sql/uninstall.mysql.utf8.sql</file>
                </sql>
        </uninstall>
        <update> <!-- Runs on update; New in 2.5 -->
                <schemas>
                        <schemapath type="mysql">sql/updates/mysql</schemapath>
                </schemas>
        </update>
 
        <!-- Site Main File Copy Section -->
        <!-- Note the folder attribute: This attribute describes the folder
                to copy FROM in the package to install therefore files copied
                in this section are copied from /site/ in the package -->
        <files folder="site">
                <filename>index.html</filename>
                <filename>helloworld.php</filename>
                <filename>controller.php</filename>
                <folder>views</folder>
                <folder>models</folder>
                <folder>language</folder>
        </files>
 
        <media destination="com_helloworld" folder="media">
                <filename>index.html</filename>
                <folder>images</folder>
        </media>
 
        <administration>
                <!-- Administration Menu Section -->
                <menu img="../media/com_helloworld/images/tux-16x16.png">COM_HELLOWORLD_MENU</menu>
                <!-- Administration Main File Copy Section -->
                <!-- Note the folder attribute: This attribute describes the folder
                        to copy FROM in the package to install therefore files copied
                        in this section are copied from /admin/ in the package -->
                <files folder="admin">
                        <!-- Admin Main File Copy Section -->
                        <filename>index.html</filename>
                        <filename>helloworld.php</filename>
                        <filename>controller.php</filename>
                        <!-- SQL files section -->
                        <folder>sql</folder>
                        <!-- tables files section -->
                        <folder>tables</folder>
                        <!-- models files section -->
                        <folder>models</folder>
                        <!-- views files section -->
                        <folder>views</folder>
                        <!-- controllers files section -->
                        <folder>controllers</folder>
                </files>
 
                <languages folder="admin">
                        <language tag="en-GB">language/en-GB/en-GB.com_helloworld.ini</language>
                        <language tag="en-GB">language/en-GB/en-GB.com_helloworld.sys.ini</language>
                </languages>
        </administration>
 
</extension>

Navigate

Prev: Adding decorations to the backend Next: Adding categories

Contributors