I'm new to laravel and web application development.
I'm developing a project with laravel 5 to have a little problem linking tables, trying to create a product and upload an image generates the following error:
QueryException in Connection.php line 624:
SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (inventario.uploads, CONSTRAINT uploads_product_id_foreign FOREIGN KEY (product_id) REFERENCES products (id) ON DELETE CASCADE) (SQL: insert into uploads (image) values (56c7846619fdb.jpg))
This is the ProductController
<?php namespace App\Http\Controllers\Admin;
use App\Http\Requests;
use App\Http\Requests\SaveProductRequest;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use App\Product;
use App\Category;
use App\Upload;
class ProductController extends Controller {
public function store(SaveProductRequest $request)
{
$data = [
'name' => $request->get('name'),
'slug' => str_slug($request->get('name')),
'description' => $request->get('description'),
'extract' => $request->get('extract'),
'price' => $request->get('price'),
'quantity' => $request->get('quantity'),
'image' => $request->get('image'),
'visible' => $request->has('visible') ? 1 : 0,
'category_id' => $request->get('category_id'),
'provider_id' => $request->get('provider_id')
];
$product = Product::create($data);
$data = \Input::file('file')->getMimeType();
$extension = strtolower(\Input::file('file')->getClientOriginalExtension());
$image = uniqid().'.'.$extension;
$path = "images";
switch ($data)
{
case "image/jpeg":
case "image/png":
case "image/gif":
case "application/pdf":
if (\Request::file('file')->isValid())
{
\Request::file('file')->move($path, $image);
$upload = new Upload();
$upload->image = $image;
$upload->save();
}
break;
default:
}
$message = $product ? 'Producto agregado correctamente!' : 'El producto NO pudo agregarse!';
return redirect()->route('product.index')->with('message', $message);
}
}
The Product Model
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
protected $table = 'products';
protected $fillable = ['name', 'slug', 'description', 'extract', 'price', 'quantity', 'visible', 'category_id'];
// Relation with Category
public function category()
{
return $this->belongsTo('App\Category');
}
public function upload()
{
return $this->belongsTo('App\Upload');
}
//Query para buscador
public function scopeName($query, $name)
{
//dd("scope: " . $name);
$query->where(\DB::raw("CONCAT(name, '', description, '', price, '', quantity)"), "LIKE", "%$name%");
}
}
Upload Model
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Upload extends Model
{
public $timestamps = false;
protected $table = 'uploads';
protected $fillable = ['image', 'product_id'];
protected $hidden = [];
//Relación con productos
public function products()
{
return $this->hasOne('App\Product');
}
}
Upload Database Migration
<?php
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateUploadsTable extends Migration {
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('uploads', function(Blueprint $table)
{
$table->increments('id');
$table->string('image', 300);
$table->integer('product_id')->unsigned();
$table->foreign('product_id')
->references('id')
->on('products')
->onDelete('cascade');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::drop('uploads');
}
}
Products Database Migration
<?php
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateProductsTable extends Migration {
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('products', function(Blueprint $table)
{
$table->increments('id');
$table->string('name', 255);
$table->string('slug');
$table->text('description');
$table->string('extract', 300);
$table->decimal('price', 8, 2);
$table->string('quantity', 300);
$table->boolean('visible');
$table->integer('category_id')->unsigned();
$table->foreign('category_id')
->references('id')
->on('categories')
->onDelete('cascade');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::drop('products');
}
}
Thank someone who can guide me.
