What to do if yii2 save fails?

yii2 Solution to unsuccessful save: 1. Use the "$model->errors" method; 2. Check whether the return value of the overridden AR life cycle method is incorrect, with statements such as "yii\db\ ActiveRecord::afterValidate()".

Possible reasons for yii2 save failure

1. No field rules were added in the rules method

2.Transaction

3.Scenario

Solution

1.$model->errors<br>

2. Check whether the return value of the overridden AR life cycle method is incorrect

yii\db\ActiveRecord::beforeValidate():
yii\db\ActiveRecord::afterValidate()
yii\db\ActiveRecord::beforeSave()
yii\db\ActiveRecord::afterSave()

Recommended: "yii Tutorial"

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