【发布时间】:2017-02-01 06:39:43
【问题描述】:
我在我的新项目中使用 Laravel 5.2 Backpack,我的表单中有一个 select_from_array 字段,这取决于我希望数据显示在另一个 select_from_array 字段中的所选值。不知道该怎么做。请帮我解决一下这个。这是我的代码
控制器.php
public function __construct()
{
if (Request::segment(3) == 'create') {
$parentField1 = [
'name' => 'cat_id',
'label' => 'Category',
'type' => 'select_from_array',
'options' => $this->categories(),
'allows_null' => false,
];
$parentField = [
'name' => 'subCat_id',
'label' => 'SubCategory',
'type' => 'select_from_array',
'options' => $this->subcategories(),
'allows_null' => false,
];
array_unshift($this->crud['fields'], $parentField1,$parentField);
}
public function categories()
{
$cat = Request::get('cat_id');
$currentId = 0;
if (Request::segment(4) == 'edit' and is_numeric(Request::segment(3))) {
$currentId = Request::segment(3);
}
$entries = Category::where('translation_lang', config('app.locale'))->where('parent_id',0)->orderBy('lft')->get();
if (is_null($entries)) {
return [];
}
$tab = [];
$tab[0] = 'Root';
foreach ($entries as $entry) {
if ($entry->id != $currentId) {
$tab[$entry->translation_of] = '- ' . $entry->name;
}
}
return $tab;
}
public function subcategories()
{
$currentId = 0;
if (Request::segment(4) == 'edit' and is_numeric(Request::segment(3))) {
$currentId = Request::segment(3);
}
$entries = Category::where('translation_lang', config('app.locale'))->where('parent_id','!=' ,0)->orderBy('lft')->get();
if (is_null($entries)) {
return [];
}
$tab = [];
$tab[0] = 'Root';
foreach ($entries as $entry) {
if ($entry->id != $currentId) {
$tab[$entry->translation_of] = '- ' . $entry->name;
}
}
return $tab;
}
我想要subcategories() 中所选选项的 id,我可以使用该 id 来获取数据。
【问题讨论】:
-
您在 __construct 方法上缺少结束
}。
标签: php laravel-5.2 laravel-backpack