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Difference between revisions of "Using the core parameter types"

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Parameters are one way in which data may be stored for a Joomla! Extension. Each parameter consists of two parts: a simple text string of the form {NAME} = {VALUE}, in which the parameter value is recorded (usually concatenated into a single string with other parameter values, and stored in a table field); and a form field in the Extension backend, which allows a user to enter the parameter value, and which is defined by an xml <code><param></code> element.
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Parameters are one way that data may be stored for a Joomla! Extension. Each parameter consists of two parts:
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* A simple text string of the form {NAME} = {VALUE}, in which the parameter value is recorded. The strings are usually concatenated into a single string with other parameter values and stored in a table field.
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* A form field in the Extension backend that allows a user to enter the parameter value, and which is defined by an XML <code><param></code> element.
  
Joomla! defines 21 different core parameter types, each of which gives a predefined behaviour and appearance in the back-end. This makes it very easy for developers to implement a range of different form data entry types (text boxes, radio buttons, calendar selectors, etc) with a minimum of effort. This behaviour and appearance is determined by the <code>type</code> attribute of the <code><param></code> element. See [[Standard parameter types]] for a complete list and details of each type.
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Joomla! defines 21 core parameter types, each of which gives a predefined behaviour and appearance in the back-end. This makes it very easy for developers to implement a range of form data entry types (text boxes, radio buttons, calendar selectors and so on) with a minimum of effort. This behaviour and appearance is determined by the <code>type</code> attribute of the <code><param></code> element. See [[Standard parameter types]] for a complete list and details of each type.
 
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<noinclude>[[Category:Development]]</noinclude>

Revision as of 16:36, 27 December 2010

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Parameters are one way that data may be stored for a Joomla! Extension. Each parameter consists of two parts:

  • A simple text string of the form {NAME} = {VALUE}, in which the parameter value is recorded. The strings are usually concatenated into a single string with other parameter values and stored in a table field.
  • A form field in the Extension backend that allows a user to enter the parameter value, and which is defined by an XML <param> element.

Joomla! defines 21 core parameter types, each of which gives a predefined behaviour and appearance in the back-end. This makes it very easy for developers to implement a range of form data entry types (text boxes, radio buttons, calendar selectors and so on) with a minimum of effort. This behaviour and appearance is determined by the type attribute of the <param> element. See Standard parameter types for a complete list and details of each type.