如何在CakePHP中的两个表之间设置多个HABTM关系

Question

I'm trying to make two HABTM relationships between these two tables in CAKEPHP 2.6, but it gives me a database error when I try to create a record. I'm sure there must be some model settings or something, but I could not fix it. :(

Here's an img of DB structure:

Model

class Solicitude extends AppModel {
public $hasAndBelongsToMany = array(
    'Citante' => array(
        'className' => 'Cliente',
        'joinTable' => 'citantes',
        'foreignKey' => 'solicitude_id',
        'associationForeignKey' => 'cliente_id',
        'unique' => 'keepExisting',
        'conditions' => '',
        'fields' => '',
        'order' => '',
        'limit' => '',
        'offset' => '',
        'finderQuery' => '',
    ),
    'Citado' => array(
        'className' => 'Cliente',
        'joinTable' => 'citados',
        'foreignKey' => 'solicitude_id',
        'associationForeignKey' => 'cliente_id',
        'unique' => 'keepExisting',
        'conditions' => '',
        'fields' => '',
        'order' => '',
        'limit' => '',
        'offset' => '',
        'finderQuery' => '',
    )
);

}

Controller ADD method

public function add() {
    if ($this->request->is('post')) {
        $this->Solicitude->create();
        if ($this->Solicitude->save($this->request->data)) {
            $this->Session->setFlash(__('The solicitude has been saved.'));
            return $this->redirect(array('action' => 'index'));
        } else {
            $this->Session->setFlash(__('The solicitude could not be saved. Please, try again.'));
        }
    }
    $citantes = $this->Solicitude->Citante->find('list');
    $citados = $this->Solicitude->Citado->find('list');
    $this->set(compact('citantes', 'citados'));
}

Add view

echo $this->Form->create('Solicitude'); 

echo __('Add Solicitude');

    echo $this->Form->input('radicado');
    echo $this->Form->input('fecha');
    echo $this->Form->input('ccsede_id');
    echo $this->Form->input('ccusuario_id');
    echo $this->Form->input('consulta_id');
    echo $this->Form->input('peticiones');
    echo $this->Form->input('area_id');
    echo $this->Form->input('tipo_clase_id');
    echo $this->Form->input('Citante');
    echo $this->Form->input('Citado');

echo $this->Form->end(__('Submit'));

Error obtained adding

Error: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'Citante.cliente_id' in 'field list'

SQL Query: SELECT Citante . cliente_id FROM conciliacion . clientes AS Citante WHERE Citante . solicitude_id = '1'

Answer 1

With CakePHP 2 you can define these relations like this in your Solicitude model:

var $hasAndBelongsToMany = array(

        'Citantes' => array(
            'className' => 'Client',
            'joinTable' => 'citantes',
            'foreignKey' => 'solicitude_id',
            'associationForeignKey' => 'cliente_id'
        ),
        'Citados' => array(
            'className' => 'Client',
            'joinTable' => 'citados',
            'foreignKey' => 'solicitude_id',
            'associationForeignKey' => 'cliente_id'
        )
    );

The only thing you have to two is to set two different relation names, here Citantes and Citados . They are then the names that are used to fetch records.

And with CakePHP 3, this would be done like this in your SolicitudesTable table:

$this->belongsToMany('Citantes', [
            'className' => 'Client',
            'joinTable' => 'citantes',
            'foreignKey' => 'solicitude_id',
            'targetForeignKey' => 'cliente_id'
        ]);

$this->belongsToMany('Citados', [
            'className' => 'Client',
            'joinTable' => 'citados',
            'foreignKey' => 'solicitude_id',
            'targetForeignKey' => 'cliente_id'
        ]);