cakephp - Updating belongsToMany association data -


i setting form updates person , associated person_to_role tables, person_to_role intermediate table links person role in n..n relationship. role has predefined list of roles, shouldn't modified person's scope.

i need update role_id , description in person_to_role table , add/remove records.

sql

--person +-------------+-------------+------+-----+---------+----------------+ | field       | type        | null | key | default |          | +-------------+-------------+------+-----+---------+----------------+ | id          | int(11)     | no   | pri | null    | auto_increment | | nick_name   | varchar(16) | yes  |     | null    |                | | first_name  | varchar(24) | no   |     | null    |                | | middle_name | varchar(8)  | yes  |     | null    |                | | last_name   | varchar(24) | no   |     | null    |                | | birth_date  | date        | no   |     | null    |                | | gender      | varchar(8)  | no   |     | null    |                | +-------------+-------------+------+-----+---------+----------------+  -- role +-------------+--------------+------+-----+---------+----------------+ | field       | type         | null | key | default |          | +-------------+--------------+------+-----+---------+----------------+ | id          | int(11)      | no   | pri | null    | auto_increment | | name        | varchar(24)  | no   |     | null    |                | | description | varchar(100) | yes  |     | null    |                | +-------------+--------------+------+-----+---------+----------------+  --person_to_role +-------------+--------------+------+-----+---------+----------------+ | field       | type         | null | key | default |          | +-------------+--------------+------+-----+---------+----------------+ | id          | int(11)      | no   | pri | null    | auto_increment | | person_id   | int(11)      | no   | mul | null    |                | | role_id     | int(11)      | no   | mul | null    |                | | description | varchar(100) | yes  |     | null    |                | +-------------+--------------+------+-----+---------+----------------+

persontable model

public function initialize(array $config) { parent::initialize($config);

    $this->settable('person');     $this->setdisplayfield('id');     $this->setprimarykey('id');      // define relations     $this->belongstomany('role', [         'jointable'=> 'person_to_role',         'foreignkey' => 'person_id'     ]);         }

person controller -> edit()

public function edit($id = null) {     $person = $this->person->get($id, [         'contain' => ['role']     ]);      $this->set('roles', $this->person->role->find('list'));      if ($this->request->is(['patch', 'post', 'put'])) {                     $person = $this->person->patchentity($person, $this->request->getdata());         if ($this->person->save($person)) {             $this->flash->success(__('the person has been saved.'));              return $this->redirect(['action' => 'index']);         }         $errors = print_r($person->errors(),1);         $this->flash->error(__('the person not saved. please, try again.<br><pre>'. $errors .'</pre>'),['escape'=> false]);     }      $this->set(compact('person'));     $this->set('_serialize', ['person']); }

edit.ctp form fields

echo $this->form->control('nick_name'); echo $this->form->control('first_name'); echo $this->form->control('middle_name'); echo $this->form->control('last_name'); echo $this->form->control('birth_date'); echo $this->form->control('gender',['type'=>'select','options'=>[''=> '-  please select -', 'male'=>'male','female'=>'female']]);  assigned roles  ... <?php foreach ($person->role $k=>$role) { ?>     <tr><td><?php      echo $this->form->input("role.$k._joindata.id",['type'=>'hidden','value'=>$person->role[$k]['_joindata']['id']]);      echo $this->form->input("role.$k._joindata.role_id",['value'=>$role- >id,'options'=>$roles,'templates'=>['formgroup' =>'{{input}}']])               ?></td><td> <?php echo $this->form->input("role.$k._joindata.description",    ['value'=>$person->role[$k]['_joindata']['description'],'templates'=> ['formgroup' =>'{{input}}']]);  ?></td></tr>         <?php } ?> ...

this gives me following post data:

'nick_name' => 'johny',     'first_name' => 'john',     'middle_name' => 'j.',     'last_name' => 'smith',     'birth_date' => '1961-01-01',     'gender' => 'male',     'role' => [         (int) 0 => [             '_joindata' => [                 'id' => '1',                 'role_id' => '5',                 'description' => 'person role description'             ]         ]     ] ]

but update fails following errors:

the person not saved. please, try again.

  array   (   [role] => array   (     [0] => array     (       [name] => array       (         [_required] => field required       )        [_joindata] => array       (         [person_id] => array         (           [_required] => field required         )       )     )   ) )

it asks provide person_to_role.person_id foreignkey (it should know current person id), , wants value role.name. did set association wrong? appreciated.

update 2017-08-20

still no go, tried possible variations docs , other internet resources. able pass through validation save action, insert query generated instead of update , errors out on unique constraint violation.

i have person.id , person_to_role.id accessible:

protected $_accessible = [     '*' => true,     'id' => true ];

my post data looks this:

[   'nick_name' => '',   'first_name' => 'test',   'middle_name' => '',   'last_name' => 'user',   'birth_date' => '1996-10-01',   'gender' => 'male',   'role' => [     (int) 0 => [       '_joindata' => [         'id' => '153',         'description' => 'test edited text'       ],       'id' => '2'     ]   ] ]

i tried both, , without person_to_role record id in _joindata, same result:

insert person_to_role (person_id, role_id, description)  values (129, 2, 'test edited text')

while trying different methods, including using 'through' association, had following lines added persontoroletable.phpmodel:

$this->belongsto('person'); $this->belongsto('role');

after commenting these out, worked expected, able save updates add new , delete existing records in join table.


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