Laravel ：连接两个 table 从 table 一个获取信息并从 table 两个获取第一张相关图像

Question

我有两个table一个是propertyDetails另一个是propertyImages 我已经完成了两个 table 之间的关系......

这是模型

属性详情

class PropertyDetail extends \Eloquent {
    protected $fillable = [];

    public function propImages()
    {
        return $this->hasMany('PropertyImage', 'property_details_id');
    }
}

Table迁移

public function up()
    {
        Schema::create('property_details', function (Blueprint $table) {
            $table->increments('id');
            $table->enum('purpose', array('Sell', 'Rent'));
            $table->integer('property_owner_id')->unsigned();
            $table->integer('property_agent_id')->nullable();
            $table->integer('bedroom');
            $table->integer('dining_room');
            $table->integer('bathroom');
            $table->string('title', 100);
            $table->integer('price');
            $table->string('type', 120);
            $table->string('specify_type', 120);
            $table->text('details');
            $table->integer('active');
            $table->foreign('property_owner_id')->references('id')->on('property_owners')->onDelete('cascade');
            $table->timestamps();
        });
    }

propertyImages

class PropertyImage extends \Eloquent
{
    protected $fillable = [];

    public function propertyImages()
    {
        return $this->belongsTo('PropertyDetail', 'property_details_id');
    }
}

Table迁移

Schema::create('property_images', function(Blueprint $table)
        {
            $table->increments('id');
            $table->integer('property_details_id')->unsigned();
            $table->foreign('property_details_id')->references('id')->on('property_details')->onDelete('cascade');
            $table->binary('image');
            $table->timestamps();
        });
    }

我想要做的是 select 所有 projectsDetails 与来自 table 的第一张相关图像两个 propertyImages

我试过了

$properties = PropertyDetail::with('propImages')->get();
return View::make('admin.properties.view', compact('properties'));

在我看来

@foreach($properties as $property)
{{ HTML::image('images/propertyImages/'.$property->propImages->image, $property->title, array('width'=>767, 'height'=>384)) }}
@endforeach

得到

Undefined property: Illuminate\Database\Eloquent\Collection::$image

Answer 1

更改此行：

return View::make('admin.properties.view', compact('properties'));

到

return View::make('admin.properties.view', ['properties' => $properties]));

然后重试。

注意： 传递给 View::make 的第二个参数是应该对视图可用的数据数组。

Reference

Answer 2

如错误所述，您正在尝试获取集合上的关系，该关系存在于该集合中的对象（记录）上。您需要遍历属性，并为每个属性获取它们的项目...

 @foreach ($properties as $property)
  // access property properties here
  @foreach ($property->image as $image)
    // access image properties here.
  @endforeach
@endforeach

Answer 3

感谢所有这就是我如何让它工作的

在@Ferran 建议的视图部分我这样做了

@foreach ($properties as $property)
  // access property properties here
  @foreach ($property->image as $image)
    // access image properties here.
  @endforeach
@endforeach

但是因为我只需要第一张图片而不是全部我找到了解决方案 here

我刚刚将第二个 @foreach 更改为使用 slice 这是最终代码

@foreach ($properties as $property)
      // access property properties here
      @foreach($property->propImages->slice(0, 1) as $image)
        // access image properties here.
      @endforeach
    @endforeach

Laravel ：连接两个 table 从 table 一个获取信息并从 table 两个获取第一张相关图像

Laravel : Join two tables get the info from table one and get the first related image from table two

php

mysql

laravel

eloquent

laravel-eloquent