Добавление полей формы

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< J3.x:Creating a simple module
This page is a translated version of the page J3.x:Creating a simple module/Adding Form Fields and the translation is 25% complete.

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Создание простого модуля

Данная серия материалов написана о том, как разработать какой-либо модуль для Joomla! в версии Joomla 3.x. Вы можете пройтись по материалам этой серии с помощью выпадающего навигационного меню.

Начните со вступления и пройдитесь по материалам этой серии с помощью либо расположенной внизу навигационной кнопки, либо расположенного справа навигационного текстового блока (Материалы в этой серии).

Поля формы дают много возможностей по настройке в Joomla и для модулей являются единственным способом, позволяющим пользователю настроить их для нужд своего сайта.

Добавление полей формы к модулю

In this case we are going to extend our previous example using the database to provide a list of languages for the user to select from. To allow this to happen we will use the SQL form field type (full details for this on the SQL Form Field docs page).

First of all we are going to add a form field into our xml file. Remember those config tags that we added in earlier? Well now inside these tags we are going to add the following code:

<fields name="params">
    <fieldset name="basic">
               label="Select a language"
               query="SELECT id AS value, lang FROM #__helloworld" />

This selects the languages from the database table and allows the user to choose which one from a select element.

If you were to install the module as it is now you would see if you were to access the module in the backend of Joomla that a dropdown had appeared (although picking an option won't affect the module at the moment).

Note: The form field parameters are stored for each module in the #__modules table under the params field as json encoded string.

Now lets make the form field do something!

Lets go into the mod_helloworld.php and retrieve the parameter (note you cannot retrieve the parameter in the helper), and then pass it into the helper function.

  * This retrieves the lang parameter we stored earlier. Note the second part
  * which states to use the default value of 1 if the parameter cannot be
  * retrieved for some reason
$language = $params->get('lang', '1');
$hello    = modHelloWorldHelper::getHello( $language );

Now lets edit our database query in the helper file to reflect our parameter choice.

// Obtain a database connection
$db = JFactory::getDbo();
// Retrieve the shout - note we are now retrieving the id not the lang field.
$query = $db->getQuery(true)
            ->where('id = '. $db->Quote($params));
// Prepare the query
// Load the row.
$result = $db->loadResult();
// Return the Hello
return $result;


Form fields give the user an easy way to customise the module to their sites settings. This allows the modules scope to be increased as well for many languages and applications.