laravel 致命错误类名必须是有效的对象或字符串
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/25746377/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
fatal error class name must be a valid object or a string
提问by Fawzinov
I'am new to laravel and php , I have this function in my controller , it gives me that error fatal error class name must be a valid object or a string
我是 laravel 和 php 的新手，我的控制器中有这个函数，它给我错误 致命错误类名称必须是有效对象或字符串
public function getIndex () {
$categories = array();
foreach ( $Category::all() as $key=> $category) {
$categories[$category->id] = $category->name ;
}
and this is my whole controller
这是我的整个控制器
<?php
class ProductsController extends BaseController {
public function __construct(){
$this->beforeFilter('csrf' , array('on'=>'post')) ;
}
public function getIndex () {
$categories = array();
foreach ( $Category::all() as $key=> $category) {
$categories[$category->id] = $category->name ;
}
return View::make('products.index')
->with('products' , Product::all())
->with('categories' , $categories);
}
public function postCreate(){
$validator = Validator::make(Input::all() , Product::$rules);
if ($validator->passes()){
$product = new Product ;
$product->category_id = Input::get('category_id');
$product->title = Input::get('title');
$product->description = Input::get('description');
$product->price = Input::get('price');
$image = Input::file('image');
$filename = date('Y-m-d-H:i:s')."-".$image->getClientOriginalName();
Image::make($image->getRealPath())->resize(468,249)->save('public/img/products/'.$filename);
$product->image = 'img/products/'.$filename;
$product->save();
return Redirect::to('admin/products/index')
->with('message' , 'Product Created');
}
return Redirect::to('admin/products/index')
->with('message', 'Something went wrong')
->withErrors($validator)
->withInput() ;
}
public function postDestroy(){
$product = Product::find(Input::get('id'));
if($product){
File::delete('public/'.$product->image);
$product->delete() ;
return Redirect::to('admin/products/index')
->with('message' , 'Product Deleted');
}
return Redirect::to('admin/products/index')
->with('message' , 'Something went wrong');
}
public function postToggleAvailability(){
$product = Product::find(Input::get('id'));
if($product){
$product->availability = Input::get('availability');
$product->save();
return Redirect::to('admin/product/index')->with('message', 'product updated');
}
return Redirect::to('admin/product/index')->with('message' , 'Invalid Product');
}
}
采纳答案by PBro
Assuming the class is called Category you should use Category::all()in the foreach. Making:
$categories = array();
假设该类称为 Category，您应该Category::all()在 foreach 中使用。制作：$categories = array();
foreach ( Category::all() as $key=> $category) {
$categories[$category->id] = $category->name ;
}
