How to query third table with hasOne relationship in Laravel?

Question

I have a tickets table. The main tickets table hasOne customer. The customer table belongs to the user table.

Ticket.php

public function user()
{
    return $this->hasOne('App\Models\User');
}

/**
 * Get the TicketStatus record associated with the Ticket.
 * One ticket has only one status
 */
public function ticket_status(){
    return $this->hasOne('App\TicketStatus','id','ticket_status_id');
}

/**
 * Get the Customer record associated with the Ticket.
 * One ticket has only one customer
 */
public function customer()
{
    return $this->hasOne('App\Models\Customer', 'id', 'customer_id');
}

Customer.php

public function user()
{
    return $this->belongsTo(User::class);
}

/**
 * Get the Ticket that owns the Customer.
 */
public function ticket()
{
    return $this->belongsTo('App\Ticket');
}

User.php

public function customer()
{
    return $this->hasOne('App\Models\Customer');
}
/**
 * Get the Ticket record associated with the user.
 * 
 */
public function ticket()
{
    return $this->belongsTo('App\Ticket');
}

index.blade.php

@foreach($tickets as $item)
<tr>
     <td>{{ $item->customer->first_name }}</td>
</tr>
@endforeach

The main table is tickets. It has a foreign_key to users and customers . Customers table has a foreign key to user which contains first_name and last_name.

Problem : I want to access $item->customer->first_name .

Error : SQLSTATE[42S22]: Column not found: 1054 Unknown column 'users.ticket_id' in 'where clause' (SQL: select * from users where users . deleted_at is null and users . ticket_id = 1 and users . ticket_id is not null limit 1)

Any help is appreciated.

Answer 1

If your schema and relationship are defined properly then you can write your code as:

@foreach($tickets as $item)
<tr>
    <td>{{ $item->customer->user->first_name }}</td>
</tr>
@endforeach

OR

@foreach($tickets as $item)
<tr>
    <td>{{ $item->user->first_name }}</td>
</tr>
@endforeach

Answer 2

1. The error you shown is suggesting that the users table dosn't contains ticket_id . Have you checked it (maybe you forgot about run some migration)?

2. Your main probkem should be solved by changing the relation method in Ticket class for that:

---

public function customer()
{
    return $this->hasOne('App\Models\Customer', 'customer_id');
}

The second argument should be foreign key from related table (same as with hasMany relation).