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How to validate input field against the database in Yii 2.0?

If this is from a model, you can have a unique rule to it in the validation rules.

In your model, you have a rules() function:

 * @return array validation rules for model
public function rules()
    return array(
        array('name', 'required'),
        array('some_id', 'unique'),

Categories : PHP

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How to validate datagridview input by the value type of column in c#?
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