Course recommendations for validate validation

Source: Internet
Author: User
One of the great strengths of yii2 is his form component, which is both convenient and safe. Some small partners feel with Yii for a period of time, good, except than TP "difficult to understand" like nothing. Leadership arrangements to engage in a registration function, this guy brushes brush is Baidu what what good form style, is Baidu what what what validate verification, really for this guy pinch sweat. Of course, in front of the nonsense, our focus is to use ActiveForm, and then how to implement the custom validation rules. First of all, the scene: conditions: ①, there are two fields are a and B②, A has two values are 1 and 2 requirements are: When the user selects a value equal to 1, the value of B must be filled, when the value of a is equal to 2, the value of B does not matter. Where a must be selected. Let's take a look at how the rules are implemented with YII2, first add the following rule to the associated model/*** @inheritdoc */public function rules () {return [[[' B '], ' Requiredbyaspecial '],;

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Introduction: Rules in RULES:YII2 Custom validation rule in detail: one of the great strengths of yii2 is his form component, which is both convenient and secure. Some small partners feel with Yii for a period of time, good, except than TP "difficult to understand" like nothing. Leadership arrangements to engage in a registration function, this guy brushes brush is Baidu what what good form style, is Baidu what what what validate verification, really for this guy pinch sweat. Of course, in front of the nonsense, our focus is to use ActiveForm, and then how to implement the custom validation rules. First, the scene: Condition: ①, there are two fields A and B, respectively.

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