Laravel 8.x - Storing data with Eloquent Relationship - php

Question

I've got a User model that hasOne Membership model, with a users table and a memberships table (each entry in the memberships table has a foreign key linked to a user_id).
I've made a registration page that lets the user have a 7 days trial period on the membership but I'm having trouble storing the data.
This is the dd() of the data in the registration form:
"_token" => "ckRlMligEyTwu7ssOi4TmesycbsPpVQlrJ4jQaBd"
"username" => "JaneDoe"
"password" => "password"
"password_confirmation" => "password"
"expiration" => "2021-04-30"
Now in my controller I've got the following store() method:
public function store(Request $request) {
// validating
$this->validate($request, [
'username' => ['required', 'max:200'],
'password' => 'required|confirmed',
'expiration' => 'required'
]);
// storing
User::create([
'username' => $request->username,
'password' => Hash::make($request->password),
'expiration' => $request->expiration
]);
}
This won't store anything in the memberships table and I have no idea how to correctly write the store method using the Model's Eloquent Relationships declared.
Thanks for the help.
EDIT:
While trying to make some sense i've modified the store() function, now looks like this:
public function store(Request $request) {
// validating
$this->validate($request, [
'username' => ['required', 'max:200'],
'password' => 'required|confirmed',
'expiration' => 'required'
]);
// storing
User::create([
'username' => $request->username,
'password' => Hash::make($request->password)
])->membership(Membership::create([
'expiration' => $request->expiration
]));
}
Now seems like Laravel doesn't know where to get the user_id of the newly created user, like the error suggests:
SQLSTATE[HY000]: General error: 1364 Field 'user_id' doesn't have a default value (SQL: insert into `memberships` (`expiration`, `updated_at`, `created_at`)

Answer 1

Your solution is to do:
User::create([
'username' => $request->username,
'password' => Hash::make($request->password)
])->membership()->create([
'expiration' => $request->expiration
]);
Using the relation (membership() not membership as an attribute) will already know the relation key (user_id in this case).
You can see more info about this in the documentation.
Other way of doing same is:
$membership = new Membership([
'expiration' => $request->expiration
]);
User::create([
'username' => $request->username,
'password' => Hash::make($request->password)
])->membership()->save($membership);
More info about save() on the documentation.