required validation requires checkbox input field text password textarea length option checked
required validation
- For an inputText, inputHidden, inputPassword, textarea or FCKEditorArea2 field it examines if the length of the input field is not zero without the trailing and leading whitespace.
- For an inputCheckbox, it requires the checkbox to be checked
- For an inputRadio, inputRadioDynamic, a multiple select, a multiple selectDynamic or a multiple selectFile it requires at least one option to be selected
- For inputCheckboxDynamic element (checkbox group) you can finetune how many checkboxes must be checked (min/max number)
Tips:
- If you'd like to make an inputFile mandatory, you'll need to use the '
required' parameter of thefilevalidation. - You can achieve the opposite of this validation using the '
required' parameter available for several validation types: this way you can accept valid or empty fields, for example a valid number OR an empty field.
<?php
$config = Array(
'element' => Array(
'type' => '...',
// ...further element settings here...
'validation' => Array(
Array(
'type' => 'required'
// only for inputCheckboxDynamic:
'minimum' => 1, // default: 1
'maximum' => 5 // default: false (no maximum)
'help' => 'Help message value for this validator only'
)
)
)
);
?>
Live examples:
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