Laravel 5.1 - Foreach 表单中的数据 (Blade)

Question

我在显示我的产品可用颜色时遇到问题，我尝试用 blade foreach 来显示它们，但它不起作用。我的资源控制器：

public function show($id){
        $colors = Color::where('product_id', $id)->orderBy('id', 'asc');
        $product = Product::where('id', $id)->first();

        return view('store.show', compact('product','colors'));     
    }

这是我的table颜色，我添加正确的关系产品型号：

namespace dixard;

use Illuminate\Database\Eloquent\Model;
use dixard\User;
use dixard\Category;
use dixard\Gender;
use dixard\OrderItem;
use dixard\Color;

class Product extends Model
{
    protected $table = 'products';
    protected $fillable = 
    [
        'name',
        'slug',
        'description',
        'extract',
        'image',
        'visible',
        'price',
        'category_id',
        'gender_id',
        'user_id'
    ];

    // Colleghiamo OGNI prodotto ha un utente
    public function user() {
        return $this->belongsTo('dixard\User');
    }

    // Colleghiamo OGNI prodotto ha una categoria
    public function category() {
        return $this->belongsTo('dixard\Category');
    }

    public function gender() {
        return $this->belongsTo('dixard\Gender');
    }

    // prodotto è contenuto in TANTI order item
    public function OrderItem() {
        return $this->belongsTo('dixard\OrderItem');
    }

    // prodotto è contenuto in TANTI order item
    public function Color() {
        return $this->belongsTo('dixard\Color');
    }
}

颜色模型

namespace dixard;

use Illuminate\Database\Eloquent\Model;

class Color extends Model
{
    protected $table = 'colors';

    // gli dico che voglio scrivere questo campi
    protected $fillable = [
        'color',
        'product_id',
    ];

    public $timestamps = false;

    // Ogni color HA tanti prodotti. // Ogni prodotto ha tanti colori
    public function products() {
        return $this->hasMany('dixard\Product');
    }
}

我正在尝试显示我的产品可用的颜色，因此：

<label for="p_color">Color</label>
@foreach($colors as $color)
    <td>{{ $color->color }}</td>
@endforeach

这只是测试！我想显示一个 select 选项，我尝试使用 BLADE 但它不起作用，

获取 product_id = $id 工作正常的所有颜色。
获取 id = $id 工作正常的产品。

我认为问题是代码 blade(foreach) 显示了我的产品可用的所有颜色。

我该如何解决？谢谢你的帮助！

Answer 1

据我所知，您没有将颜色集合（数组）传递给视图，而是传递给查询生成器。您需要添加查询执行方法，例如。 get() 到管道的末尾：

// Adding get() will execute this query
$colors = Color::where('product_id', $id)->orderBy('id', 'asc')->get();

Answer 2

您没有运行get()您的颜色查询：

public function show($id){

    $colors = Color::where('product_id', $id)
                  ->orderBy('id', 'asc')
                  ->get();            // <-- Add this

    $product = Product::where('id', $id)->first();

    return view('store.show', compact('product','colors')); 

}

Answer 3

// To select multi records,you have to use get();

$colors = Color::where('product_id', $id)->orderBy('id', 'asc')
             ->get(); // add get()

// To select single record, you have to use first();
$product = Product::where('id', $id)->first();

// By the way, you can also use this statement to replace the second statement. 
// This only worked for primary key and the key must be id)
$product = Product::find($id);

Answer 4

在查询中添加get()或all():

$colors = Color::where('product_id', $id)->orderBy('id', 'asc')->get();

或

$colors = Color::where('product_id', $id)->orderBy('id', 'asc')->all();

Laravel 5.1 - Foreach 表单中的数据 (Blade)

Laravel 5.1 - Foreach data in form (Blade)

php

laravel

laravel-5

laravel-blade