PHP/Laravel: SELECT and JOIN two tables - php

Question

I have three tables as shown below and trying to join the expenses and allowance table on customers. I have tried using the code below but it returns null on expenses and allowances. I tried inner JOIN as well but didn't work.
I have tables as below:
customers(id, user_id, full_name)
expenses(id, customer_id, name, amount)
allowances(id, customer_id, name, quantity)
And i tried using the code below but doesn't work.
$logs = Customer::query()
->select([
"customers.id",
"customers.full_name",
"expenses.name as expenses_name",
"expenses.amount as expenses_amount",
"allowances.name as allowance_name",
"allowances.quantity as allowance_quantity"
])
->join('expenses', function (JoinClause $join) {
$join->type = 'left outer';
$join->on('expenses.customer_id', 'customers.id');
})
->join('allowances', function (JoinClause $join) {
$join->type = 'left outer';
$join->on('allowances.customer_id', 'customers.id');
});
return $logs->toJson();
I want output as:
{
id:'',
full_name:'',
expenses:{{expenses_name, expenses_amount},{expenses_name, expenses_amount}},
allowances:{{allowance_name, allowance_quantity},{allowance_name, allowance_quantity}}
}

Answer 1

Use the following Code:
$logs = Customer::select([
"customers.id",
"customers.full_name",
"expenses.name as expenses_name",
"expenses.amount as expenses_amount",
"allowances.name as allowance_name",
"allowances.quantity as allowance_quantity"
])
->leftjoin('expenses', 'customers.id','=','expenses.customer_id')
->leftjoin( 'allowances','customers.id','=','allowances.customer_id')
->get();

Answer 2

You can also use eloquent relationship.
define relations in Customer Model
public function expenses()
{
return $this->hasMany(Expense::class);
}
public function allowances()
{
return $this->hasMany(Allowance::class);
}
get Customers with relationship
$logs = Customer::with(['expenses','allowances'])->get();