I'm sending request data with parent/child relationships (1 level max depth). So parent_id references itself in the table as a fk.
debug($this->request->getData()) yields:
[
"activities": [
[
"name": "Parent Activity",
"id": 3,
"parent_id": null,
"quantity": null,
],
[
"name": "Child Activity",
"id": 4,
"parent_id": 3,
"quantity" :5
],
[
"name": "Parent Activity 2",
"id": 7,
"parent_id": null,
"quantity": null,
],
]
]
I want to create a Validation rule that will force parent activities who have no children ( nodes with parent_id pointing to them ) to have quantity" filled in (this can be any arbitrary field, I have a few others).
The most straight forward way I can think is by looping/manipulating the request data and marking it, but is there a nice Cake way of doing this and possibly in the Validation?
$data = $this->request->getData();
$collection = new \Cake\Collection\Collection($data);
// filter/map so I can create a new key to count the # of children, thus manipulating the data as such:
[
"activities": [
[
"name": "Parent Activity",
"id": 3,
"parent_id": null,
"quantity": null,
"children": 1
],
[
"name": "Child Activity",
"id": 4,
"parent_id": 3,
"quantity" :5
],
[
"name": "Parent Activity 2",
"id": 7,
"parent_id": null,
"quantity": null,
"children": 0
],
]
]
Then I could use the children as a condition in Validation rather than something more complicated. Though manipulating the request data doesn't seem that clean. Open to any other suggestions.
Using Cake3.
Example taken from the link above:
$validator->add('picture', 'file', [
'rule' => ['mimeType', ['image/jpeg', 'image/png']],
'on' => function ($context) {
return !empty($context['data']['show_profile_picture']);
}
]);
$context is the data, just add your logic to check $context in the closure.