I have written ajax callback on a textfield and it is called on blur event.
But before It going for ajax callback I want to check a condition that textfield not empty.
So I want,If textfield is not empty then the ajax callback is get called otherwise it should not get called.
Thanks in advance
form_example is my module name
Form control
$form['price_form']['item'] = array(
'#type' => 'textfield',
'#title' => 'Item Name?',
'#size' => 10,
'#maxlength' => 25,
'#id' => 'nameId',
'#required' => TRUE,
'#ajax' => array(
// #ajax has two required keys: callback and wrapper.
// 'callback' is a function that will be called when this element changes.
'callback' => 'form_example_simplest_callback',
'wrapper' => 'listDiv',
'effect' => 'fade',
),
'#autocomplete_path' => 'examples/form_example/item_name_autocomplete_callback',
);
JS Code
(function($){
$(document).ready(function(){
alert('Hi, Javascript successfully attached');
Drupal.behaviors.form_example = {
attach: function (context, settings) {
// Overwrite beforeSubmit
Drupal.ajax['nameId'].options.beforeSubmit = function (form_values, element, options) {
alert('dsf');
}
}
};
});
})(jQuery);
I am printing alert for testing.I tried by its name and by its id but not getting alert.I got below alert so js inclusion fine.
alert('Hi, Javascript successfully attached');
The ajax implementation in the form api lets you specify a 'beforeSubmit' handler that will be run before submission. According to this : http://malsup.com/jquery/form/#options-object if that function returns false the form won't be submitted.
You should be able to add a beforesubmit handler something like: