我需要在我的主要类别中插入子类别。我已经完成了显示,添加,编辑和删除父类别的所有工作。但现在我仍然坚持如何将子类别添加到我的父类别中。
以下是该类别和子类别的表格。
正如你所看到的,我已经在iPhone下有一个子类别,我通过数据库手动添加。要将子类别添加到主类别,我只需单击+子类别链接,该链接将我带到表单以添加子类别。
这是我展示和添加子类别的路线:
Route::group(["middleware" => 'admin'], function(){
/** More category routes here -->, just hidden for shortness **/
/** Show the Admin Add Sub-Categories Page **/
Route::get('admin/categories/addsub/{id}', [
'uses' => '\App\Http\Controllers\CategoriesController@addSubCategories',
'as' => 'admin.category.addsub',
'middleware' => ['auth'],
]);
/** Post the Sub-Category Route **/
Route::post('admin/categories/postsub/{id}', [
'uses' => '\App\Http\Controllers\CategoriesController@addPostSubCategories',
'as' => 'admin.category.postsub',
'middleware' => ['auth'],
]);
});
这是我的CategoriesController.php:
只是为了显示子类别功能而缩短。这是我在将子类别添加到父类别
时遇到问题的地方class CategoriesController extends Controller
/**
* Return the view for add new sub category
*
* @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
*/
public function addSubCategories($id) {
$category = Category::findOrFail($id);
return view('admin.category.addsub', compact('category'));
}
/**
* @param $id
* @param CategoryRequest $request
* @return \Illuminate\Http\RedirectResponse
*/
public function addPostSubCategories($id, CategoryRequest $request) {
// Find the Parent Category ID
$category = Category::findOrFail($id);
// Insert into categories where the Parent_id = to the category ID
$categories = Category::where('parent_id', '=', $category);
// Assign $category to the Category Model, and request all validation rules
$categories = new Category($request->all());
// Then save the newly created category in DB
$categories->save();
// Flash a success message
flash()->success('Success', 'Sub Category added successfully!');
// Redirect back to Show all categories page.
return redirect()->route('admin.category.show');
}
}
我的Category.php模型:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Category extends Model
{
protected $table = 'categories';
protected $fillable = ['name'];
protected $guarded = ['id'];
public function parent() {
return $this->belongsTo('App\Category', 'parent_id');
}
public function children() {
return $this->hasMany('App\Category', 'parent_id');
}
}
我的添加子类别表单:
<form role="form" method="POST" action="{{ route('admin.category.postsub', $category->id) }}">
{{ csrf_field() }}
<li class="collection-item blue">
<h5 class="white-text text-center">
Sub-Category to {{ $category->name }}
</h5>
</li>
<li class="collection-item">
<div class="form-group{{ $errors->has('name') ? ' has-error' : '' }}">
<input type="text" class="form-control" name="name" value="{{ old('name') }}" placeholder="Add Sub-Category">
@if($errors->has('name'))
<span class="help-block">{{ $errors->first('name') }}</span>
@endif
</div>
</li>
<li class="collection-item blue">
<div class="form-group text-center">
<button type="submit" class="btn btn-link grey lighten-5">Create Sub-Category</button>
</div>
</li>
</form>
我的数据库结构:
我特别需要在我的CategoriesController中的addPostSubCategories()函数中提供帮助,因为现在如果我添加一个新的SUB类别,它只会添加一个新的父类别,而不是一个子类别
答案 0 :(得分:2)
访问此处查看详细说明:https://laravel.com/docs/5.2/eloquent-relationships#inserting-related-models
这是你想要的:
/**
* @param $id
* @param CategoryRequest $request
* @return \Illuminate\Http\RedirectResponse
*/
public function addPostSubCategories($id, CategoryRequest $request) {
// Find the Parent Category
$category = Category::findOrFail($id);
// Create the new Subcategory
$subcategory = new Category($request->all());
// Save the new subcategory into the relationship
$category->children()->save($subcategory);
// Flash a success message
flash()->success('Success', 'Sub Category added successfully!');
// Redirect back to Show all categories page.
return redirect()->route('admin.category.show');
}