Laravel JOIN Multiple Tables Eloquent Relationships

Today, We want to share with you Laravel JOIN Multiple Tables Eloquent Relationships.In this post we will show you Pivot tables and many-to-many relationships, hear for php – Optimizing Laravel Eloquent multiple joins we will give you demo and example for implement.In this post, we will learn about Laravel Eloquent Relationships Tutorial Example From Scratch with an example.

Laravel JOIN Multiple Tables Eloquent Relationships

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As I will cover this Post with live Working example to develop Laravel Multiple Table Join Query, so the how to join three table by laravel eloquent model for this example is following below.

  • ->get id of currently logged in user
  • ->link that id to the category’s user_id and get category’s name
  • ->link that category’s name to product category’s name and get all matched product data

First Way 1 :

$user_id = Auth::user()->id;
$category = Category::where('user_id', '=', $user_id)->first();
$products = Product::where('category_name', '=', $category->name)->get();

second way:
class Category extends Eloquent {
   public function products() {
    return Product::where('category_name', '=', $this->name)->get();
     or do this: return $this->hasMany('Product', 'category_name', 'name');       

Then do this:

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$user_id = Auth::user()->id;
$products = Category::where('user_id', '=', $user_id)->first()->products;

and then in Laravel the view:

foreach($products as $item)
  echo $item->name.'<br />';

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