J1.5

Using the core parameter types

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Revision as of 03:24, 11 June 2013 by Wilsonge (talk | contribs) (Wilsonge moved page Using the core parameter types to J1.5:Using the core parameter types: Move to 1.5 namespace)
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The "J1.5" namespace is an archived namespace. This page contains information for a Joomla! version which is no longer supported. It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.

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.