How to load specific fields from a nested relationship with Eloquent? - php

Question

I have an Order model which belongs to a User and has Revisions.
When I try to load orders including: the 'id' and 'name' field from its user and some fields including 'user_id' field from whole revisions, I do:
return Order::with(array('user' => function ($query) {
$query->select('id','name');
}), 'revisions' => function ($query) {
$query->select('id','created_at','user_id','operation','text');
})->get();
However, I'd like to get the name of the user, which naturally is at users table as 'name' field.
Relationships setup
Order
public function user() {
return $this->belongsTo('User');
}
public function revisions() {
return $this->hasMany('Revision');
}
Revision
public function order() {
return $this->belongsTo('Order');
}
User
public function orders() {
return $this->hasMany('Order');
}
public function revisions() {
return $this->hasMany('Revision');
}
Expected result
Just for fast typing reasons I represent it as a JS object ...
orders = [
{ id: 5,
user: {....},
revisions: [
{ id:100,
operation: 'Creation',
text: 'Please provide soon',
user: 'John Doe' // Here I got the name instead of a user_id
}
]
},
{...}
]
How can I complete this?
Note
I did the proper relationship setups at each model.

Answer 1

well, you get user_id in revisions because it is a property of revision itself, you should look for the username in the Order object returned
$x = Order::with(array('user' => function ($query) {
$query->select('id','name');
}), 'revisions' => function ($query) {
$query->select('id','created_at','user_id','operation','text');
})->get();
var_dump($x->user->name);
$x->user is the relation model, user->name is its property
So, to have it also in revision you have to do something like:
$x->each(function(&$order) {
$order->revisions->each(function(&$rev) use ($order) {
$rev->setUsername($order->user->name);
});
});
assuming you have a setUsername method in your relation Model. In any case, the username in relation model should be a private property, not a fillable field, because is not part of the table, and in this case you have to check if it is exported when you do a ->toJson()