Databases not linking using hasMany in laravel - php

Question

I am trying to use data from two databases in laravel. Edit: I have added the products controller to the bottom of this post
This is how I test if they are linked:
<p>TEST :{{ $products->ticket->created_at}}</p>
error message:
Undefined variable: products (View: /Applications/MAMP/htdocs/lsapp/resources/views/products/create.blade.php)
Product.php (App)
namespace App;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
//Table NAME
protected $table = 'products';
//PRIMARY KEY
public $primaryKey = 'id';
//Timestamps
public $timestamps =true;
public function user(){
return $this->belongsTo('App\User');
}
public function products()
{
return $this->hasMany(App\product::class);
}
}
Ticket.php (app)
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class product extends Model
{
public function Product(){
return $this->belongsTo(App\Product::class);
}
}
Product Controller:
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\product;
use App\Ticket;
class productController extends Controller
{
/**
* Create a new controller instance.
*
* #return void
*/
public function __construct()
{
$this->middleware('auth',['except' => ['index','show']]);
}
/**
* Display a listing of the resource.
*
* #return \Illuminate\Http\Response
*/
public function index()
{
$products = product::orderBy('created_at','desc')->paginate(10);
//$products = product::where('type','major')->get();
return view('products.index')->with('products',$products);
}
/**
* Show the form for creating a new resource.
*
* #return \Illuminate\Http\Response
*/
public function create()
{
return view('products.create');
}
/**
* Store a newly created resource in storage.
*
* #param \Illuminate\Http\Request $request
* #return \Illuminate\Http\Response
*/
public function store(Request $request)
{
$this->validate($request,[
'title' => 'required',
]);
//create product
$product = new product;
$product->title = $request->input('title');
$product->venue = $request->input('venue');
$product->city = $request->input('city');
$product->country = $request->input('country');
$product->description = $request->input('description');
$product->date = $request->input('date');
$product->user_id = auth()->user()->id;
$product->save();
return redirect('/products')->with('success','product Created');
}
/**
* Display the specified resource.
*
* #param int $id
* #return \Illuminate\Http\Response
*/
public function show($id)
{
$product = product::find($id);
return view('products.show')->with('product',$product);
}
/**
* Show the form for editing the specified resource.
*
* #param int $id
* #return \Illuminate\Http\Response
*/
public function edit($id)
{
$product = product::find($id);
if(auth()->user()->id !==$product->user_id){
return redirect('/products')->with('error','unauthorised page');
}
return view('products.edit')->with('product',$product);
}
/**
* Update the specified resource in storage.
*
* #param \Illuminate\Http\Request $request
* #param int $id
* #return \Illuminate\Http\Response
*/
public function update(Request $request, $id)
{
$this->validate($request, [
'title' => 'required'
]);
$product = product::find($id);
$product->title = $request->input('title');
$product->venue = $request->input('venue');
$product->city = $request->input('city');
$product->country = $request->input('country');
$product->description = $request->input('description');
$product->date = $request->input('date');
$product->user_id = auth()->user()->id;
$product->save();
return redirect('/products')->with('success','product updated');
}
/**
* Remove the specified resource from storage.
*
* #param int $id
* #return \Illuminate\Http\Response
*/
public function destroy($id)
{
$product = product::find($id);
if(auth()->user()->id !==$product->user_id){
return redirect('/products')->with('error','unauthorised page');
}
$product->delete();
return redirect('/products')->with('success','product deleted');
}
}

Answer 1

There are a few problems with your code.
<p>TEST :{{ $products->ticket->created_at}}</p> will never work.
Assuming you are testing in your index page, you need to loop over each product in order to see it's relationship with a ticket.
Do all of your products have a single ticket? If so, then you can just define the single ticket in a config variable. It does not make sense to define a many-to-one relationship in a database.
In your Product model, you have not defined a relationship to the Ticket model. You only have a relationship defined in the Ticket model to the Product model. This means that you can access a product from the ticket, but not the other way around. You need to explicitly define a one-on-one relationship from Product to Ticket in order to use it.
You have defined this function within the Product model.
public function products() {
return $this->hasMany(App\product::class);
}
Why? Do products themselves have many products? I think you may benefit from learning about eloquent relationships. Laracasts is a good resource for learning Laravel from scratch.
Also see Laravel official Eloquent documentation