Question

我与下面定义的一对多关系

public function property() {
    return $this->hasOne(Property::class);
}

和

public function propertycalendars(){
    return $this->hasMany(PropertyCalendar::class,'property_id');
}

在我的控制器中，我得到这样的关系：

 $property = Property::with('propertycalendars')->get();
   return view('users.properties.show',compact('property'));

但鉴于我尝试获取产权称谓

Property [title] does not exist on this collection instance

我想得到我定义的标题和关联属性，这是我的$ propery的dd，它显示了数据，但是我只是不知道如何通过laravel的show方法访问它

Collection {#1297 ▼


 #items: array:1 [▼
    0 => Property {#1245 ▼
      #connection: "mysql"
      #table: "properties"
      #primaryKey: "id"
      #keyType: "int"
      +incrementing: true
      #with: []
      #withCount: []
      #perPage: 15
      +exists: true
      +wasRecentlyCreated: false
      #attributes: array:12 [▶]
      #original: array:12 [▶]
      #changes: []
      #casts: []
      #dates: []
      #dateFormat: null
      #appends: []
      #dispatchesEvents: []
      #observables: []
      #relations: array:1 [▼
        "propertycalendars" => Collection {#1296 ▼
          #items: array:1 [▼
            0 => PropertyCalendar {#1291 ▼
              #connection: "mysql"
              #table: "property_calendars"
              #primaryKey: "id"
              #keyType: "int"
              +incrementing: true
              #with: []
              #withCount: []
              #perPage: 15
              +exists: true
              +wasRecentlyCreated: false
              #attributes: array:6 [▶]
              #original: array:6 [▶]
              #changes: []
              #casts: []
              #dates: []
              #dateFormat: null
              #appends: []
              #dispatchesEvents: []
              #observables: []
              #relations: []
              #touches: []
              +timestamps: true
              #hidden: []
              #visible: []
              #fillable: []
              #guarded: array:1 [▶]
            }
          ]
        }
      ]
      #touches: []
      +timestamps: true
      #hidden: []
      #visible: []
      #fillable: []
      #guarded: array:1 [▶]
    }
  ]
}

Answer 1

此行：

$property = Property::with('propertycalendars')->get();

不获取一个属性，而是将您的属性 all 全部获取到集合中。每个属性都有一个标题。

您通常会在视图中@foreach进行以下操作：

@foreach($property as $prop)
    {{ $prop->title }}
@endforeach

（为了清楚起见，我将$property重命名为$properties。）

在Laravel中从一对多关系检索数据属性

1 个答案: