Creating a hasMany Relation in Laravel 5 - php

Question

I'm trying to create a Tag/Content structure. A content object is assigned to a Tag object and Tag objects can be assigned to many Contents. I'm getting an error:
Trying to get property 'name' of non-object (View: D:\laragon\www\project1\resources\views\contents\show.blade.php)
These are my Models:
Content:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Content extends Model {
public function tag() {
return $this->belongsTo('App\Tag');
}
}
Tag:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Tag extends Model {
public function contents() {
return $this->hasMany('App\Content');
}
}
ContentController:
/**
* Display the specified resource.
*
* #param int $id
* #return \Illuminate\Http\Response
*/
public function show($id) {
$content = Content::find($id);
return View('contents.show')
->with('content', $content);
}
show.blade.php:
#extends('layouts.app')
#section('content')
<div class="container">
<h1> {{ $content->tag->name }} - {{ $content->title }} </h1>
<div class="row">
<div class="col-lg-12">
Title: {{ $content->title }}
</div>
<div class="col-lg-12">
Body: {{ $content->body }}
</div>
<div class="col-lg-12">
Tag: {{ $content->tag }}
</div>
<hr />
<div class="col-lg-12">
{!! link_to('contents', 'Back', ['class' => 'btn btn-danger']) !!}
</div>
</div>
</div>
#endsection
The error I'm getting is from h1 tag: {{ $content->tag->name }}
Any Ideas? Thanks in advance :)

Answer 1

You have to check "$content->tag" is valid before call "$content->tag->name".

Answer 2

The problem is that in the table contents should have tag_id, but you can solve it in this way in the Content model
class Content extends Model {
public function tag() {
return $this->belongsTo('App\Tag');
}
}
class Tag extends Model {
public function contents() {
return $this->hasMany('App\Content', 'tag');
}
}

Answer 3

This was the solution:
Change column name tag to tag_id and change return $this->belongsTo('App\Tag'); to return $this->belongsTo('App\Tag','tag_id');
The final code was:
Content Model:
namespace App;
use Illuminate\Database\Eloquent\Model;
class Content extends Model {
public function tag() {
return $this->belongsTo('App\Tag','tag_id');
}
}
Tag Model:
namespace App;
use Illuminate\Database\Eloquent\Model;
class Tag extends Model {
public function contents() {
return $this->hasMany('App\Content');
}
}
Thank you all for the help.

Answer 4

Refer the table name inside model
protected $table ="<table_name>"