[英]How to do IS NULL and IS NOT NULL with Yii 2 ActiveRecord?
I have a table which has a field `activated_at` timestamp NULL DEFAULT NULL
, which means that it can contain a timestamp or it can be null
and it's null
by default.我有一个表,它有一个字段`activated_at` timestamp NULL DEFAULT NULL
,这意味着它可以包含一个时间戳,或者它可以为null
,默认情况下为null
。
I have another [gii-generated] search model with a following configuration in the search()
method:我有另一个 [gii-generated] 搜索模型,在search()
方法中具有以下配置:
public function search($params)
{
$query = User::find();
// add conditions that should always apply here
$this->load($params);
if (!$this->validate()) {
// uncomment the following line if you do not want to return any records when validation fails
// $query->where('0=1');
return $dataProvider;
}
$andFilterWhere = [
'id' => $this->id,
'status' => $this->status,
'role' => $this->role,
'created_at' => $this->created_at,
'updated_at' => $this->updated_at,
'completed_files' => $this->completed_files,
// 'activated_at' => null,
];
if(!isset($_GET['deleted'])) {
$query->where(['deleted_at' => null]);
$andFilterWhere['deleted_at'] = null;
} else if($_GET['deleted'] === 'true') {
$query->where(['not', ['deleted_at' => null]]);
}
// grid filtering conditions
$query->andFilterWhere(
$andFilterWhere
);
$query->andFilterWhere(['like', 'first_name', $this->username])
->andFilterWhere(['like', 'auth_key', $this->auth_key])
->andFilterWhere(['like', 'password_hash', $this->password_hash])
->andFilterWhere(['like', 'password_reset_token', $this->password_reset_token])
->andFilterWhere(['like', 'email', $this->email])
->andFilterWhere(['like', 'first_name', $this->first_name])
->andFilterWhere(['like', 'last_name', $this->last_name]);
if($this->activated || $this->activated === "0") {
#die(var_dump($this->activated));
if($this->activated === '1') {
// this doesn't filter
$query->andFilterWhere(['not', ['activated_at' => null]]);
} else if($this->activated === '0') {
// this doesn't either
$query->andFilterWhere(['activated_at', null]);
}
}
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
return $dataProvider;
}
Yes, I have set the activated
property in my class:是的,我已经在我的班级中设置了activated
属性:
public $activated;
And my rules()
method is as following:我的rules()
方法如下:
public function rules()
{
return [
[['id', 'status', 'role', 'created_at', 'updated_at', 'completed_files'], 'integer'],
['activated', 'string'],
[['username', 'first_name', 'last_name', 'auth_key', 'password_hash', 'password_reset_token', 'email', 'deleted_at', 'completed_files', 'activated_at'], 'safe'],
];
}
What I was trying to set in the search()
method is to filter on field activated_at
depending on the $activated
value (see above code):我试图在search()
方法中设置的是根据$activated
值(见上面的代码)过滤字段activated_at
:
if($this->activated || $this->activated === "0") {
#die(var_dump($this->activated));
if($this->activated === '1') {
// this doesn't filter
$query->andFilterWhere(['not', ['activated_at' => null]]);
} else if($this->activated === '0') {
// this doesn't either
$query->andFilterWhere(['activated_at', null]);
$andFilterWhere['activated_at'] = null;
}
}
I use it with GridView
- every other filter works except this one.我将它与GridView
一起GridView
- 除了这个过滤器之外,所有其他过滤器都可以使用。
What am I doing wrong here?我在这里做错了什么?
Aand how to properly do this sort of queries: A以及如何正确执行此类查询:
IS NULL something
IS NOT NULL something
With Yii 2's ActiveRecord
query builder?使用 Yii 2 的ActiveRecord
查询构建器?
EDIT: Line: if(!isset($_GET['deleted']))
is used for something else and this works normally.编辑:行: if(!isset($_GET['deleted']))
用于其他用途,这正常工作。
If i understand right you can use andWhere如果我理解正确,您可以使用 andWhere
->andWhere(['not', ['activated_at' => null]])
but andFilterWhere in execute where the related value is not null但是 andFilterWhere in execute where 相关值不为空
from doc http://www.yiiframework.com/doc-2.0/yii-db-query.html来自文档http://www.yiiframework.com/doc-2.0/yii-db-query.html
andFilterWhere() Adds an additional WHERE condition to the existing one but ignores empty operands. andFilterWhere() 向现有条件添加一个额外的 WHERE 条件,但忽略空操作数。
for this expression:对于这个表达式:
WHERE activated_at IS NULL
try this (it's working):试试这个(它正在工作):
->andWhere(['is', 'activated_at', new \yii\db\Expression('null')]),
$null = new Expression('NULL');
$query->andFilterWhere(['is not', 'asp_id', $null]);
OR或者
$query->andFilterWhere(['is', 'asp_id', $null]);
this solution check if column_name
is empty or NULL此解决方案检查column_name
是否为空或 NULL
WHERE (LENGTH(`column_name`) > 0)
->andWhere(['>', 'LENGTH(column_name)', 0]) //check if empty or null
Another variant - check only for NULL另一个变体 - 仅检查 NULL
WHERE column_name IS NOT NULL
->andWhere(['IS NOT', 'column_name', null]); // check on null
// ...WHERE (`status` = 10) AND (`type` IS NULL) AND (`info` IS NOT NULL)
$query->where([
'status' => 10,
'type' => null,
])
->andWhere(['not', ['info' => null]]);
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