Belongs to Many: save custom field - cakephp

Question

I need help with saving/updating belongsToMany data with custom field.
I have a tables acl, managers, groups, sections.
I need to save/update data in acl table from sections/edit or sections/add
acl table
id|target_id|target_type|section_id
I need set target_id data 'user' or 'group' depending entities.
edit.ctp
echo $this->Form->control('managers._ids', ['class' => 'multiple', 'multiple' => true]);
echo $this->Form->control('groups._ids', ['class' => 'multiple', 'multiple' => true]);
SectionsTable.php
$this->belongsToMany('Managers', [
'joinTable' => 'acl',
'through' => 'Acl',
'foreignKey' => 'section_id',
'targetForeignKey' => 'target_id',
'conditions' => [
'target_type' => 'user'
]
]);
$this->belongsToMany('Groups', [
'joinTable' => 'acl',
'through' => 'Acl',
'foreignKey' => 'section_id',
'targetForeignKey' => 'target_id',
'conditions' => [
'target_type' => 'group'
]
]);
AclTable.php
$this->belongsTo('Managers', [
'foreignKey' => 'target_id',
'conditions' => [
'target_type' => 'user'
]
]);
$this->belongsTo('Groups', [
'foreignKey' => 'target_id',
'conditions' => [
'target_type' => 'group'
]
]);
I tried to use _joinData, but nothing work
before and after patchEntity()
foreach ($section->groups as &$group) {
$group->_joinData = ['target_type' => 'group'];
}
whithout save()
foreach ($this->request->data['managers']['_ids'] as $id) {
$manager = $this->Sections->Managers->get($id);
$manager->_joinData = new Entity(['target_type' => 'user'], ['markNew' => true]);
$this->Sections->Managers->link($section, [$manager]);
}
$this->request->data has a follow structure:
[
'controller' => '*',
'action' => '*',
'title' => '*',
'managers' => [
'_ids' => [
'0' => '*',
'1' => '*',
'2' => '*',
]
],
'groups' => [
'_ids' => [
'0' => '*',
'1' => '*',
'2' => '*',
]
]
]
Alltimes error: Cannot insert row, some of the primary key values are missing. Got (3, 114, ), expecting (target_id, section_id, target_type)
Now working with following code
$section = $this->Sections->patchEntity($section, $this->request->data, ['associated' => ['Managers', 'Groups']]);
foreach ($section->managers as &$manager) {
$manager->_joinData = new Entity([
'target_id' => $manager->id,
'target_type' => 'user',
'section_id' => $section->id
], ['markNew' => true]);
}
foreach ($section->groups as &$group) {
$group->_joinData = new Entity([
'target_id' => $group->id,
'target_type' => 'group',
'section_id' => $section->id
], ['markNew' => true]);
}
if ($this->Sections->save($section, ['associated' => ['Managers', 'Groups']])) {
$this->Flash->success(__('The section has been saved.'));
return $this->redirect(['action' => 'index']);
}
$this->Flash->error(__('The section could not be saved. Please, try again.'));
But, maybe can do it don't listing all fields?
Also I need to create/add new records to acl table when adding new section
But section_id unavailable until save(). Can I save/add acl records by associations
Updated
AclTAble.php
$this->setPrimaryKey(['target_type', 'target_id', 'section_id']);
.
.
.
$this->belongsTo('Managers', [
'foreignKey' => 'target_id',
'conditions' => [
'target_type' => 'user'
]
]);
$this->belongsTo('Groups', [
'foreignKey' => 'target_id',
'conditions' => [
'target_type' => 'group'
]
]);
With primaryKey id, adding and editing entities working, but editing makes dublicates, it's are not perfect for me. And in documentations use composite primaryKey, so i use ['target_id', 'target_type', 'section_id'], with it cake don't make dublicated, but aggain show me error: Cannot insert row, some of the primary key values are missing. Got (8, 197, ), expecting (target_id, section_id, target_type)