Laravel雄辩的拥有多次通过关系

Question

So, Here it is. I have 3 tables and the structure of them as follow:

**user**
 -id
 -name
 -password
 -etc...

**user_general_info**
 -id
 -the_user_id
 -country_id
 -phone
 -desc
 ...

**country**
 -id
 -name

For the obvious reason I have model for each 3 of them. Now How do I declare eloquent relationship between these 3 so I can get data of user's country (something like $user->user_general_info->user_country->name ).? I already tried a hasManyThrough , but it didn't work out.

Do I have to add the country foreign key to the user table? Or am I missing something?

Thanks in advance.

Answer 1

There are multiple ways to handle this. However, one of the cleanest method is by declaring a hasOne relationship in your user model and retrieving the results.

So Suppose you have three models, User , UserGeneralInfo and Country . Go to your User model and declare the following.

 public function userGeneralInfo()
 {
     return $this->hasOne('App\UserGeneralInfo', 'user_id', 'id');
 }


 public function userCountry()
 {
     return $this->hasOne('App\Country', 'user_id', 'id');
 }

Now when querying use the following

$user = User:where('id, $id)->with('userGeneralInfo')->with('userCountry')->first();

This will give you the user along with its related general info and user country. Now you can access the variables using.

$user->userGeneralInfo->phone to retrieve the phone number. Similarly, $user-> userCountry->name to get the country name.

Note: There are multiple approaches to get your desired results, this one being and simplest amount them for starters to understand. You can learn more about the complex relationships laravel relationships