How to display children from childrens table in parents' Index page? - php

Question

I have a Bank model which has 'bank_name', 'account_name' and 'balance' fields. Another model Transaction is where user first selects the bank and inputs opening_balance and transaction_amount and the closing_balance which is "opening balance +- transaction_amount" (-, + depending upon debit/credit) becomes "balance" in Bank Model. I want to show the balance in a particular bank in bank.index page by grabbing the closing_balance from transactions table. I am stuck here. So far I have:
Bank Model:
protected $fillable=['bank_name','account_name'];
public function transactions()
{
return $this->hasMany('App\Transaction');
}
Transaction Model:
protected $fillable = ['bank_id','opening_balance','transaction_amount','isdebit','closing_balance'];
public function bank()
{
return $this->belongsTo('App\Bank');
}
BankController:
public function index()
{ $banks = Bank::all();
//$bal_1 = Bank::find(1)->transactions()->latest()->first();
// I can show the balance in bank which has id 1 by this manually.
return view('bank.index', compact('banks','bal_1'));
}
Transaction Controller:
public function index()
{ $transactions = Transaction::all();
return view('transaction.index',compact('transactions'));
}
Bank.index page
<table class="table">
<thead>
<tr>
<th scope="col">#</th>
<th scope="col">Bank Name</th>
<th scope="col">Account Name</th>
<th scope="col">Balance</th>
</tr>
</thead>
<tbody>
#foreach($banks as $i=>$bank)
<tr>
<th scope="row">{{++$i}}</th>
<td>{{$bank->bank_name}}</td>
<td>{{$bank->account_name}}</td>
<td>{{$bal_1->closing_balance}}</td>
</tr>
#endforeach
</tbody>
</table>

Answer 1

You can define another relation in Bank model which give you one model object instead of array like this :
public function transaction()
{
return $this->hasOne('App\Transaction');
}
Then You can use this relation in your bank.index view :
<td>{{$bank->transaction->closing_balance}}</td>