[英]Foreign key validation rule in Yii2
I have parent_id
that can have NULL value - default sets to 0 . 我有parent_id
可以具有NULL值-默认设置为0 。
Model 模型
...
[['parent_id'], 'integer'],
[['parent_id'], 'default', 'value' => 0],
[['parent_id'], 'exist', 'targetAttribute' => 'id', 'skipOnEmpty' => true],
...
But exist rule didn't work. 但是存在规则不起作用。
What I'm doing wrong? 我做错了什么?
UPDATE 更新
Today I removed the following rule and it works: 今天,我删除了以下规则,它起作用了:
...
[['parent_id'], 'default', 'value' => 0],
...
But what do I do if want to change the default to other value? 但是,如果要将默认值更改为其他值怎么办?
change the order of rules: 更改规则顺序:
[['parent_id'], 'integer'],
[['parent_id'], 'exist', 'targetAttribute' => 'id', 'skipOnEmpty' => true],
[['parent_id'], 'default', 'value' => 0],
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