[英]Laravel foreign key is null
如果我嘗試保存我的外鍵,我的laravel關系某種程度上無法正常工作。
客戶遷移
Schema::create('clients', function(Blueprint $table)
{
$table->increments('id');
$table->string('name');
$table->string('email')->unique();
$table->string('password');
$table->rememberToken();
$table->timestamps();
});
查詢遷移
Schema::create('inquiries', function(Blueprint $table)
{
$table->increments('id');
$table->unsignedInteger('client_id')->nullable();
$table->unsignedInteger('device_id')->nullable();
$table->string('android_device_token')->default('');
$table->integer('status')->default(0);
$table->timestamps();
$table->foreign('client_id')->references('id')->on('clients')->onDelete('cascade');
$table->foreign('device_id')->references('id')->on('devices')->onDelete('cascade');
});
試圖像這樣放置請求並保存它,但是數據庫不斷向我顯示null
$data = array(
"device_id" => $request->input('device_id'),
"client_id" => Client::find($request->input('client_id'))->id,
"android_device_token" => $inquiry->android_device_token,
"status" => $request->input('status')
);
$inquiry->fill($data);
$inquiry->save();
模型關系:
查詢:
public function client()
{
return $this->hasOne(Client::class);
}
客戶:
protected $table = 'inquiries';
protected $fillable = ['client_id', 'device_id', 'android_device_token', 'status'];
public function inquiry()
{
return $this->hasMany(Inquiry::class);
}
好的,我知道問題出在您的模型和控制器中。
這是我的代碼:
Client.php
public function inquiries () {
// if the relation is one to many
return $this->hasMany(Inquiry::class);
// if th relation is one to one
return $this->hasOne(Inquiry::class);
}
Inquiry.php
public function client () {
// It should use belongsTo
return $this->belongsTo(Client::class);
}
在您的控制器中應該是:
調節器
$client = Client::find($request->input('client_id'));
$inquiry = new Inquiry;
$data = array(
"device_id" => $request->input('device_id'),
"android_device_token" => $inquiry->android_device_token,
"status" => $request->input('status')
);
$inquiry->fill($data);
$inquiry->client()->associate($client); // set the foreign key
$inquiry->save(); // save the inquiry
編輯:如果是由填充方法引起的。 我認為您應該在控制器中將其更改為:
// Get the client
$client = Client::find($request->input('client_id'));
// Initiate the Inquiry model;
$inquiry = new Inquiry;
$inquiry->device_id = $request->input('device_id');
$inquiry->android_device_token = $inquiry->android_device_token;
$inquiry->status = $request->input('status');
$inquiry->client()->associate($client);
$inquiry->save();
希望它可以幫助您:D
查詢模型應該具有belongsTo關系:
查詢模型關系:
public function client()
{
return $this->belongsTo(Client::class);
}
客戶模型關系:
public function inquiries()
{
return $this->hasMany(Inquiry::class);
}
您也可以在關系上使用save
方法以保存查詢:
$client = Client::find($request->input('client_id'));
$inquiry = new Inquiry();
$inquiry->fill(array(
"device_id" => $request->input('device_id'),
"android_device_token" => $inquiry->android_device_token,
"status" => $request->input('status')
));
$client->inquiries()->save($inquiry);
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