http://laravel.com/docs/4.2/eloquent#relationships
http://laravel.com/docs/4.2/eloquent#relationships
what does local key mean in this thing? does it mean primary key of the table? or what? for example in this code
本地钥匙在这件事上意味着什么？它是否意味着表的主键？或者是什么？例如在此代码中
return $this->hasOne('Phone', 'foreign_key');
return $this->hasOne('Phone', 'foreign_key', 'local_key');
2 个解决方案
#1
4
local_key is the primary key of your table. You only need to specify it if your primary key is not called id.
local_key是表的主键。如果您的主键未被称为id，则只需指定它。
#2
3
I believe everything is written in the doc:
我相信一切都写在文档中：
ake note that Eloquent assumes the foreign key of the relationship based on the model name. In this case, Phone model is assumed to use a user_id foreign key. If you wish to override this convention, you may pass a second argument to the hasOne method. Furthermore, you may pass a third argument to the method to specify which local column that should be used for the association:
请注意，Eloquent根据模型名称假定关系的外键。在这种情况下，假设Phone模型使用user_id外键。如果要覆盖此约定，可以将第二个参数传递给hasOne方法。此外，您可以将第三个参数传递给方法，以指定应该用于关联的本地列：
Which basically means that 'local_key' is the name of the table column in your db which is responsible to match the related entity (phone) with your current entity (user).
这基本上意味着'local_key'是数据库中表列的名称，它负责将相关实体（电话）与您当前的实体（用户）进行匹配。
If you have a look at the db, I'm sure you'll find a table user with a phone_id column, try to change it to something else (like "phone" only) and your eloquent request will crash. Then change your call to return $this->hasOne('Phone', 'user_id', 'phone'); and this might work again.
如果您查看数据库，我确定您会找到一个带有phone_id列的表用户，尝试将其更改为其他内容（仅限“phone”），您的雄辩请求将崩溃。然后更改您的通话以返回$ this-> hasOne（'Phone'，'user_id'，'phone'）;这可能会再次奏效。
#1
4
local_key is the primary key of your table. You only need to specify it if your primary key is not called id.
local_key是表的主键。如果您的主键未被称为id，则只需指定它。
#2
3
I believe everything is written in the doc:
我相信一切都写在文档中：
ake note that Eloquent assumes the foreign key of the relationship based on the model name. In this case, Phone model is assumed to use a user_id foreign key. If you wish to override this convention, you may pass a second argument to the hasOne method. Furthermore, you may pass a third argument to the method to specify which local column that should be used for the association:
请注意，Eloquent根据模型名称假定关系的外键。在这种情况下，假设Phone模型使用user_id外键。如果要覆盖此约定，可以将第二个参数传递给hasOne方法。此外，您可以将第三个参数传递给方法，以指定应该用于关联的本地列：
Which basically means that 'local_key' is the name of the table column in your db which is responsible to match the related entity (phone) with your current entity (user).
这基本上意味着'local_key'是数据库中表列的名称，它负责将相关实体（电话）与您当前的实体（用户）进行匹配。
If you have a look at the db, I'm sure you'll find a table user with a phone_id column, try to change it to something else (like "phone" only) and your eloquent request will crash. Then change your call to return $this->hasOne('Phone', 'user_id', 'phone'); and this might work again.
如果您查看数据库，我确定您会找到一个带有phone_id列的表用户，尝试将其更改为其他内容（仅限“phone”），您的雄辩请求将崩溃。然后更改您的通话以返回$ this-> hasOne（'Phone'，'user_id'，'phone'）;这可能会再次奏效。