Laravel Eloquent 关系 keyBy()
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Laravel Eloquent relationship keyBy()
提问by Petyo Tsonev
i want to modify the result set of relationship in the following way
我想通过以下方式修改关系的结果集
I have this array
我有这个数组
array:11 [▼
"id" => 1
"user_id" => 1
"name" => "Test Case"
"created_at" => "2017-08-25 17:12:26"
"updated_at" => "2017-08-29 11:59:46"
"hashid" => "5LOkAdWNDqgVomK"
"user" => array:8 [?]
"order" => array:8 [?]
"classification" => array:2 [▼
0 => array:9 [▼
"id" => 1
"case_id" => 1
"method" => "facial_map_manual"
"strong" => 2.0
"dynamic" => 30.0
"delicate" => 50.0
"calm" => 18.0
"created_at" => "2017-08-31 11:00:00"
"updated_at" => "2017-08-31 11:00:00"
]
1 => array:9 [▼
"id" => 2
"case_id" => 1
"method" => "interview"
"strong" => 20.0
"dynamic" => 25.0
"delicate" => 30.0
"calm" => 25.0
"created_at" => "2017-08-31 11:00:00"
"updated_at" => "2017-08-31 11:00:00"
]
]
"classification_data" => array:3 [▼
0 => array:6 [▼
"id" => 1
"case_id" => 1
"type" => "facial_points"
"data" => null
"created_at" => "2017-08-31 11:00:00"
"updated_at" => "2017-08-31 11:00:00"
]
1 => array:6 [▼
"id" => 2
"case_id" => 1
"type" => "interview"
"data" => array:4 [?]
"created_at" => "2017-08-31 12:00:00"
"updated_at" => "2017-08-31 11:00:00"
]
2 => array:6 [?]
]
"teeth_configuration" => array:6 [?]
]
I want to map classificationand classification_databy column key ( type OR method ) which are loaded relationships. This is the query:
我想通过加载关系的列键（类型 OR 方法）映射分类和分类数据。这是查询：
$case = RCase::with(['user','order','classification','classificationData','teethConfiguration'])->where('id',$id)
->first();
This is what i tried so far
这是我到目前为止尝试过的
$case->classificationData = $case->classificationData->keyBy('type')->toArray();
With the first method they are ordered by type but the old classification_datastays there even if try to
使用第一种方法，它们按类型排序，但旧的分类数据保留在那里，即使尝试
unlink($case->classification_data)这不是大问题......我也可以这样做 classification分类，但数据保持不变。
Is there any method with which i can do keyBy() straight in the loaded relation model ?Thanks in advance
有什么方法可以在加载的关系模型中直接执行 keyBy() 吗？提前致谢
PHP Version: 7.1 Laravel Version: 5.4.38 OS: Ubuntu 16.04 LTS
回答by Arthur Samarcos
You can replace the relation with this code:
您可以使用以下代码替换关系：
$case->setRelation("classification_data",$case->classificationData->keyBy('type'));
To replace the relation you must provide the same relation name or laravel will create another one.
要替换关系，您必须提供相同的关系名称，否则 laravel 将创建另一个关系。
When you do:
当你这样做时：
$case->classificationData = something
You are actually adding a new attribute to the model object.
您实际上是在向模型对象添加一个新属性。
