How to switch on\off frontend form validation for some fields in yii2?

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伪装坚强ぢ
伪装坚强ぢ 2021-02-19 23:10

I have got difficult form in yii2 view, where some fields show or hide. It decide from user field choises, select options in the form. I write this frontend logic with custom jq

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  • 2021-02-19 23:54

    You can set your active field using this code: (not active record, activefield exactly)

    $activeField = $form->field($model, 'someField');
    $activeField->enableClientValidation=false;
    $activeField ->enableAjaxValidation=false;
    
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  • 2021-02-20 00:04

    You can try setting default values for attributes that aren't set:

    [
      // set "username" and "email" as null if they are empty
      [['username', 'email'], 'default'],
    
      // set "level" to be 1 if it is empty
      ['level', 'default', 'value' => 1],
    ]
    

    more info here

    You can also use conditional client-side validation with "whenClient" option when defining you validators:

    From the manual:

    If you also need to support client-side conditional validation, you should configure the whenClient property which takes a string representing a JavaScript function whose return value determines whether to apply the rule or not. For example,

    [
        ['state', 'required', 'when' => function ($model) {
            return $model->country == 'USA';
        }, 'whenClient' => "function (attribute, value) {
            return $('#country').val() == 'USA';
        }"],
    ]
    
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  • 2021-02-20 00:05

    To remove a field from validation:

    $('#yourFormID').yiiActiveForm('remove', 'yourinputID');
    

    To add a field to validation list:

    $('#yourFormID').yiiActiveForm('add', {
    id: 'country',
            name: 'yourinputID',
            container: '.field-inputID', //or your cllass container
            input: '#yourinputID',
            error: '.help-block',  //or your class error
            validate:  function (attribute, value, messages, deferred, $form) {
                yii.validation.required(value, messages, {message: "Validation Message Here"});
            }
        }); 
    

    And don't forget conditional validation in your model. More info

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  • 2021-02-20 00:06

    To disable client side validation. Begin your active form like this.

    ActiveForm::begin(['enableClientValidation'=>false]);
    
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  • 2021-02-20 00:08
    $form->field($model, 'youAttribute', ['enableClientValidation' => false])->textInput();
    

    The ActiveField class has a property enableClientValidation, you can simply set this property to false if you want to disable clientValidation form some fields.

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  • 2021-02-20 00:10

    For your Form, use whenClient:

    ['name', 'required', 'when' => {serverSide Condition),
                'whenClient' => "ut_utils.isAttributeVisible",
            ],
            ['name', 'string', 'min' => 2, 'max' => 28],
            ['name', 'trim'],
    

    And in ut_utils (JS):

    /**
         * Useful for FE validation (whenClient) to validate only if visible (ie valid input)
         *
         * @param attribute  Obj containing all sorts of info about attr including container name :-)
         * @param value
         */
        isAttributeVisible: function (attribute, value) {
            return $(attribute.container).is(':visible');
        },
    

    You will need to add 'when' to validate serverside too you can add specific logic here or use a scenario to exclude attributes from being validated ...

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