[英]Saving a one to many relationship into a database using laravel
我需要一些幫助,使用一對多關系(將一條魚養一條魚)將數據保存到數據庫中。 如果您可以向我展示一些有關如何執行此操作的示例,那將很好。 因為我的bear_id為0,所以似乎無法獲取數據。(例如:bear_id = 1可以檢索1和2的fish_id)
這是我的代碼:
對於blade.php:
{{Form::text('name_of_bear, '', ['class' => 'form-control'])}} --> first page, once user has entered bear name it will redirect it to the fish page to enter the checkbox
<input type="checkbox" id="inlineCheckbox1" name="type_of_fish[]" value="Salmon"> Salmon <input type="checkbox" id="inlineCheckbox1" name="type_of_fish[]" value="Sardine"> Sardine --> second page after user has entered the data for bear they will click next and be redirected to here
對於我的桌子:
Schema::create('bears, function (Blueprint $table) {
$table->increments('id');
$table->engine = 'InnoDB';
$table->string(name);
$table->timestamps();
});
Schema::create(fishs, function (Blueprint $table) {
$table->increments('id');
$table->engine = 'InnoDB';
$table->string(name);
$table->integer(bear_id);
$table->timestamps();
});
魚模型:
class fish extends Eloquent
{
protected $fillable = array('name', 'bear_id');
// DEFINE RELATIONSHIPS
public function bears() {
return $this->belongsTo('App\bear);
}
}
熊模型:
class bear extends Eloquent
{
protected $primaryKey = 'id';
public function fishs() {
return $this->hasMany('App\fish,'bear_id');
}
}
對於控制器部分,我仍在學習,所以我真的不知道如何使用它
控制器:
public function view(Request $request)
{
$fish= new fish();
$fishType= $request->input('type_of_fish');
$fish->type_of_fish= json_encode($fishType);
$fish->save();
$bear= new bear();
$bear->Name = $request->input('name_of_bear');
$bear->save();
$fish->bear_id = $bear->id;
$fish->save();
Eloquent無需手動設置魚類模型的bear_id,而是為您提供了一種關聯模型的方法。 請注意,我使用的是靜態create()方法,而不是實例化新模型並分別填充屬性。
$fish = fish::create(['type_of_fish' => json_encode($fishType)]);
$bear = bear::create(['Name' => $request->input('name_of_bear');
$fish->bears()->associate($bear);
$fish->save();
但是,由於此時您不處理現有資源,因此可以將Eloquent的create方法用於關系。
$bear = Bear::create(['Name' => $request->input('name_of_bear')]);
$bear->fishes()->create(['type_of_fish' => $fishType);
這將創建一條新的魚,然后將其與上一行中創建的熊自動關聯。
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