Laravel One to many CRUD Example - php

Question

I am new to Laravel. I want to insert data to certain master detail tables with Laravel4. I searched all over the internet and could not find a proper solution.
I have two (plus one) tables as shown below.
PO_HEADER
PO_HEADER_ID
SUBJECT
PO_DATE
PO_DETAIL
PO_DETAIL_ID
PO_HEADER_ID
DESCRIPTION
AMOUNT
QTY
UNIT_OF_MEASURE_ID
UNIT_OF_MEASURE
UNIT_OF_MEASURE_ID
UNIT_OF_MEASURE
I should be able to insert the PO master along with as many PO detail records in one shot while pressing a SAVE BUTTON. Unit of measure in the detail section should be a drop down list (filled from the UNIT_OF_MEASURE table)
Kindly suggest how to achieve this easily. Thanks in advance!

Answer 1

This depends on your models being set up correctly:
class PurchaseOrder extends \Eloquent
{
protected $fillable = [
'subject',
'date'
];
public function detail()
{
return $this->hasMany('PurchaseOrderDetail');
}
}
class PurchaseOrderDetail extends \Eloquent
{
protected $fillable = [
'description',
'amount',
'qty'
];
protected $with = [
'unitOfMeasure',
];
public function header()
{
return $this->belongsTo('PurchaseOrder');
}
public function unitOfMeasure()
{
return $this->hasOne('UnitOfMeasure');
}
}
class UnitOfMeasure extends \Eloquent
{
protected $fillable = [
'name'
];
public function lineItems()
{
return $this->belongsToMany('PurchaseOrderDetail');
}
}
You also need to set up your migrations using the proper settings, like so:
//migration for purchaseorder table
public function up()
{
Schema::create('purchaseorders', function(Blueprint $table)
{
$table->increments('id');
$table->string('subject');
$table->string('date');
$table->timestamps();
});
}
//migration for purchaseorderdetail table
public function up()
{
Schema::create('purchaseorderdetails', function(Blueprint $table)
{
$table->increments('id');
$table->integer('purchaseorder_id')->unsigned()->index();
$table->integer('unitofmeasure_id')->unsigned()->index();
$table->foreign('purchaseorder_id')->references('id')->on('purchaseorders');
$table->string('description');
$table->float('amount');
$table->float('qty');
$table->timestamps();
});
}
//migration for unitsofmeasure table
public function up()
{
Schema::create('unitsofmeasure', function(Blueprint $table)
{
$table->increments('id');
$table->string('name');
$table->timestamps();
});
}
That should get you fairly close to what you need, I hope. :) You can then query for your items like so:
$po-details = PurchaseOrderDetail::with(['purchaseOrder', 'unitOfMeasure')->find($id);
This is what an overly simplified controller method may look like:
class PurchaseOrderController
{
public function show($id)
{
$purchaseOrders = PurchaseOrder::with('detail')->find($id);
return View::make('purchaseOrder.show', compact('purchaseOrders'));
}
}
And then your view:
#foreach ($purchaseOrders as $purchaseOrder)
#foreach ($purachseOrder->detail as $lineItem)
#endforeach
#endforeach