I have search form with multiple select and want to validate each of selected option via RangeValidator in search model. This code doesn’t work:
public function rules()
{
return [
[['status_id'], 'in', 'range' => [1, 2, 3],
];
}
How can I apply validators to array values?
Seems some type issue can you try with this (the strict option):
public function rules()
{
return [
[['status_id'], 'in', 'range' => [1, 2, 3], 'strict' => true],
];
}
In addition, also check what your return values are for your select element (assuming you are using Html::dropDownList or Html::listBox). The list source data should be an associative array:
[1 => 1, 2 => 2, 3 => 3]
.
If you are passing
[1, 2, 3]
as the list source then the keys may be taken as 0, 1, 2 internally.
‘strict’ is for type comparison.
I pass an array of id => name to listBox. When I submit form, I see this in $_GET (I use get method):
status_id
[
0 => '1'
1 => '2'
]
This does not match what you have in your model [font="Courier New"]IN / RANGE[/font] validation. You may want to debug this… it should ideally return
[1 => '1', 2 => '2']
Yes… if you are passing the string ‘3’ instead of integer 3 and wish to validate based on integer type strictly.
No, it shouldn’t. When you have select with name ‘status_id[]’, you will get an indexed array of selected options values in POST/GET. For example, if you use get method, you will get this uri:
order/index?status_id%5B%5D=1&status_id%5B%5D=2
I think you misunderstand my problem. If I use this validation with normal select (not multiple), everything works fine. But I want to write validation rule which will work for an array of values (from multiple select) - not for just integer or string in status_id attribute.
Let me describe my problem in other words.
You have model Order with attribute status_id. This attribute must have only one of this values: [1, 2, 3]. You want to make search model and form with multiple select tag, which correspond to status_id attribute. What validation rule will you use for status_id to allow multiple values (to use Order::find()->andFilterWhere([‘in’, ‘status_id’, $this->status_id])) and validate each of them against an array [1, 2, 3]?
I see. I get your problem now.
IMO the range validator does not validate an array of inputs. You may try implementing a custom validator in your model like below:
public function checkRangeValid() {
if (!$this->hasErrors()) {
$statuses = !is_array($this->status_id) ? [$this->status_id] : $this->status_id;
$allowed = [1, 2, 3]; // the allowed list
foreach ($statuses as $status) {
if (!in_array($status, $allowed)) {
$this->addError('status_id', "Invalid status '{$status}' in the list");
break;
}
}
}
}
Then in your model rules you can set:
public function rules()
{
return [
[['status_id'], 'checkRangeValid'],
];
}
So Yii doesn’t have any out-of-box solution for validating array elements? Isn’t it a common situation when you need to validate values from multiple select?
Think so presently. You can try recording an issue on github for enhancement.
Yes, I will create an issue. Thanks for participate.