Server side validation in module setting page in backend joomla - joomla

Question

I am using joomla 2.5, i am working on joomla module, i want to perform server side custom form validation at backend setting page in module. I have checked joomla forums , but they all explained according to component , i strictly need to do it in module . I am new in joomla . Please explain the method.

Answer 1

Try this,
First of all you can't do a wide variety of validations like components forms in module params without hacking the core.
the available options are limiting INT,RAW data string only.
you can use the last option of module params called filter. Details take a look at this.
<field name="myintvalue" type="text" default="8" label="Enter some text" description="Enter some description" filter="integer" />
<field name="myhtmlvalue" type="text" default="" label="Enter some text" description="Enter some description" filter="raw" />
Alternate Options.
You can create a custom rule for validation. For example your module name is mod_mymodule:
Add addrulepath attribute to the fieldset in the .xml file:
addrulepath="modules/mod_mymodule"
This will be the path to the custom rule folder.
Add validate attribute to the field with the name of the rule file:
validate="testint"
This will give us the file testint.php.
Create the rule file testint.php and put it to the path specified in the addrulepath attribute. So the full path will be:
administrator/modules/mod_mymodule/testint.php
Here is a simple validation rule class:
class JFormRuleTestint extends JFormRule
{
public function test(&$element, $value, $group = null, &$input = null, &$form = null)
{
return ((int)$value > 0 && (int)$value < 2);
}
}
it should extend JFormRule class and you will need only one method, called test. $value will contain the input from the field. Here we are testing it to be integer between 0 and 2.
Hope its helps..