問題描述
laravel 中的 belongsTo 關(guān)系返回 null
belongsTo relation in laravel is returning null
public function games(){
return $this->belongsTo('AppModelsGame');
}
但是當(dāng)我提供密鑰作為參數(shù)時，它似乎工作正常
but when i provide key as argument it seems to work fine
public function games(){
return $this->belongsTo('AppModelsGame','game_id');
}
但根據(jù) docs game_id 本身就是一個默認(rèn)參數(shù).我在這里缺少什么小東西.
but as per the docs game_id is itself is a default argument. What is the small thing i am missing here.
謝謝
推薦答案
關(guān)系的 belongsTo 端根據(jù)關(guān)系方法的名稱構(gòu)建外鍵名稱.這種行為不同于關(guān)系的 hasOne/hasMany 端，后者使用類的名稱.
The belongsTo side of the relationship builds the foreign key name based on the name of the relationship method. This behavior is different than the hasOne/hasMany side of the relationship, which uses the name of the class.
在本例中，您的關(guān)系方法名為 games，因此它將查找外鍵字段 games_id.您可以提供外鍵字段作為第二個參數(shù)，如您所示，或者您可以將您的關(guān)系方法重命名為 game().
In this case, your relationship method is named games, so it will look for the foreign key field games_id. You can either provide the foreign key field as the second parameter, as you have shown, or you can rename your relationship method to game().
這篇關(guān)于laravel ownsTo 給出 null的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！