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,具体取决于我希望数据在另一个select_from_array
字段中显示的选定值。不知道该怎么做。请帮我解决一下这个。这是我的代码
Controller.php这样
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。
答案 0 :(得分:1)
我认为最好的方法是为此特定目的创建自定义字段类型,其中包括两个选择。关注this procedure。从select2.blade.php
文件开始,添加实现目标所需的javascript(在第一个select2上更改事件,更改下一个select2中的选项)。