经过大量工作，我终于找到了如何更新联接表的方法，但是我发现我绝对无法解决的问题。我手动添加了一组复选框来更新联接表上的项目，并且只要它们是我的旧数据库的一部分，它们就可以完美地工作。当我向ID较低的联接表中添加新项时，联接表上的错误项将被更新。
这是我的控制者：
public function edit($id)
{
$brigada = $this->Brigadas
->findById($id)
->contain(['Tags', 'Voluntarios'])
->firstOrFail();
if ($this->request->is(['patch', 'post', 'put'])) {
// https://github.com/cakephp/cakephp/issues/7864
if (!empty($this->request->data['voluntarios']['_ids'])) {
$vol = [];
$ids = [];
foreach ($this->request->data['voluntarios']['_ids'] as $key=>$locationId) {
$vol['_ids'][$key] = $locationId;
$vol[] = [
'_joinData' => [
'lider' => isset($this->request->data['voluntarios'][$key]['_joinData']['lider']) ? $this->request->data['voluntarios'][$key]['_joinData']['lider'] : false
]
];
}
}
if (isset($vol)){
$this->request->data['voluntarios'] = $vol;
}
$this->Brigadas->patchEntity($brigada, $this->request->data, ['associated' => ['Voluntarios._joinData', 'Participaciones', 'Participaciones._joinData']]);
if ($this->Brigadas->save($brigada)) {
$this->Flash->success(__('Your team data has been updated.'));
return $this->redirect(['action' => 'view', $id]);
}
$this->Flash->error(__('Unable to update your team data.'));
}
}
这就是我迭代表单的方式。注意，我为id添加了一个额外的隐藏表单，只是为了尝试更改id号。但是结果最终是完全一样的。
foreach($all_vol as $key=>$voluntario){
echo $this->Form->control('voluntarios.'.$key.'.id', ['hidden' => true]);
echo $this->Form->control('voluntarios.'.$key.'._joinData.lider', [
'label' => $voluntario->full_name,
'default'=>'0',
]);
}
这是表单发送的请求。
[
'_ids' => [
(int) 0 => '1',
(int) 1 => '2',
(int) 2 => '184',
(int) 3 => '303',
(int) 4 => '1838',
(int) 5 => '1873',
(int) 6 => '2553',
(int) 7 => '4467',
(int) 8 => '4973',
(int) 9 => '5148',
(int) 10 => '5493',
(int) 11 => '6307',
(int) 12 => '7055',
(int) 13 => '7467',
(int) 14 => '7561',
(int) 15 => '7567',
(int) 16 => '7864'
],
(int) 0 => [
'id' => '184',
'_joinData' => [
'lider' => '0'
]
],
(int) 1 => [
'id' => '303',
'_joinData' => [
'lider' => '0'
]
],
(int) 2 => [
'id' => '1838',
'_joinData' => [
'lider' => '0'
]
],
(int) 3 => [
'id' => '1873',
'_joinData' => [
'lider' => '0'
]
],
(int) 4 => [
'id' => '2553',
'_joinData' => [
'lider' => '0'
]
],
(int) 5 => [
'id' => '4467',
'_joinData' => [
'lider' => '0'
]
],
(int) 6 => [
'id' => '4973',
'_joinData' => [
'lider' => '0'
]
],
(int) 7 => [
'id' => '5148',
'_joinData' => [
'lider' => '0'
]
],
(int) 8 => [
'id' => '5493',
'_joinData' => [
'lider' => '0'
]
],
(int) 9 => [
'id' => '6307',
'_joinData' => [
'lider' => '0'
]
],
(int) 10 => [
'id' => '7055',
'_joinData' => [
'lider' => '0'
]
],
(int) 11 => [
'id' => '7467',
'_joinData' => [
'lider' => '0'
]
],
(int) 12 => [
'id' => '7561',
'_joinData' => [
'lider' => '0'
]
],
(int) 13 => [
'id' => '7567',
'_joinData' => [
'lider' => '0'
]
],
(int) 14 => [
'id' => '7864',
'_joinData' => [
'lider' => '0'
]
],
(int) 15 => [
'id' => '1',
'_joinData' => [
'lider' => '1'
]
],
(int) 16 => [
'id' => '2',
'_joinData' => [
'lider' => '1'
]
]
]
我在底部添加了ID为1和2的项目，并将它们变成了“ lider”，但是当它们传递给patchEntity时，两个不同的项目被选择为“ lider”。这是手动编辑后的请求。
[
(int) 0 => [
'id' => '1',
'_joinData' => [
'lider' => '1'
]
],
(int) 1 => [
'id' => '2',
'_joinData' => [
'lider' => '1'
]
],
(int) 2 => [
'id' => '184',
'_joinData' => [
'lider' => '0'
]
],
(int) 3 => [
'id' => '303',
'_joinData' => [
'lider' => '0'
]
],
(int) 4 => [
'id' => '1838',
'_joinData' => [
'lider' => '0'
]
],
(int) 5 => [
'id' => '1873',
'_joinData' => [
'lider' => '0'
]
],
(int) 6 => [
'id' => '2553',
'_joinData' => [
'lider' => '0'
]
],
(int) 7 => [
'id' => '4467',
'_joinData' => [
'lider' => '0'
]
],
(int) 8 => [
'id' => '4973',
'_joinData' => [
'lider' => '0'
]
],
(int) 9 => [
'id' => '5148',
'_joinData' => [
'lider' => '0'
]
],
(int) 10 => [
'id' => '5493',
'_joinData' => [
'lider' => '0'
]
],
(int) 11 => [
'id' => '6307',
'_joinData' => [
'lider' => '0'
]
],
(int) 12 => [
'id' => '7055',
'_joinData' => [
'lider' => '0'
]
],
(int) 13 => [
'id' => '7467',
'_joinData' => [
'lider' => '0'
]
],
(int) 14 => [
'id' => '7561',
'_joinData' => [
'lider' => '0'
]
],
(int) 15 => [
'id' => '7567',
'_joinData' => [
'lider' => '0'
]
],
(int) 16 => [
'id' => '7864',
'_joinData' => [
'lider' => '0'
]
],
'_ids' => [
(int) 0 => '1',
(int) 1 => '2',
(int) 2 => '184',
(int) 3 => '303',
(int) 4 => '1838',
(int) 5 => '1873',
(int) 6 => '2553',
(int) 7 => '4467',
(int) 8 => '4973',
(int) 9 => '5148',
(int) 10 => '5493',
(int) 11 => '6307',
(int) 12 => '7055',
(int) 13 => '7467',
(int) 14 => '7561',
(int) 15 => '7567',
(int) 16 => '7864'
]
]
最后，我是否手动编辑都没有关系，因为我是在我的patchEntity调用中得到的。请注意，“ id”既不是1也不是2：
'_joinData' => object(App\Model\Entity\Participacione) {
'id' => (int) 981,
'brigada_id' => (int) 222,
'voluntario_id' => (int) 7567,
'lider' => true,
'[new]' => false,
'[accessible]' => [
'brigada_id' => true,
'voluntario_id' => true,
'lider' => true,
'brigada' => true,
'voluntario' => true
我该如何解决？我已经发布了其他问题，但没有很多答案，但是我将继续对人类充满信心，以解决这个问题。预先感谢您阅读我的问题！
答案 0 :(得分：0)
令人惊讶的是，我设法通过使用表中的sort属性来解决它。像这样：
$this->belongsToMany('Voluntarios', [
'foreignKey' => 'brigada_id',
'targetForeignKey' => 'voluntario_id',
'joinTable' => 'participaciones',
'saveStrategy' => 'replace',
'through' => 'Participaciones',
'sort' => ['Voluntarios.id' => 'ASC'],
]);
我觉得一切都很迫切，但是我找不到更好的方法。在删除加星标的值时，我注意到了一些错误，但这是朝着正确方向迈出的一步。