How to Join Three Table by Laravel Eloquent Model

How to join three table by laravel eloquent model

With Eloquent it's very easy to retrieve relational data. Check out the following example with your scenario in Laravel 5.

We have three models:

Article (belongs to user and category)
Category (has many articles)
User (has many articles)

Article.php

    <?php
    namespace App\Models;
    use Eloquent;
    
    class Article extends Eloquent {
        protected $table = 'articles';
    
        public function user() {
            return $this->belongsTo('App\Models\User');
        }
    
        public function category() {
            return $this->belongsTo('App\Models\Category');
        }
    }

Category.php

    <?php
    namespace App\Models;
    
    use Eloquent;
    
    class Category extends Eloquent {
        protected $table = "categories";
    
        public function articles() {
            return $this->hasMany('App\Models\Article');
        }
    }

User.php

    <?php
    namespace App\Models;
    use Eloquent;
    
    class User extends Eloquent {
        protected $table = 'users';
    
        public function articles() {
            return $this->hasMany('App\Models\Article');
        }
    }

You need to understand your database relation and setup in models. The user has many articles. The category has many articles. Articles belong to user and category. Once you set up the relationships in Laravel, it becomes easy to retrieve the related information.

For example, if you want to retrieve an article by using the user and category, you would need to write:

$article = \App\Models\Article::with(['user','category'])->first();

and you can use this like so:

//retrieve user name 
$article->user->user_name  

//retrieve category name 
$article->category->category_name

In another case, you might need to retrieve all the articles within a category or retrieve all of a specific user`s articles. You can write it like this:

$categories = \App\Models\Category::with('articles')->get();
$users = \App\Models\Category::with('users')->get();

You can learn more at http://laravel.com/docs/5.0/eloquent

Laravel join three tables with relationships

As you have not defined relationships, we have to go with Query builder, Update your joins as below

 $payments = DB::table('sales_payments')
    ->join('sales_invoices', 'sales_invoices.invoice_id', '=', 'sales_payments.invoice_id')
    ->join('customers', 'sales_invoices.customer_id', '=', 'customers.customer_id')
    ->join('payment_options', 'payment_options.paymentoption_id', '=', 'sales_payments.paymentoption_id')
    ->select('sales_payments.*', 'sales_invoices.*', 'customers.*', 'payment_options.*')
    ->get();

Then you can add where clause.

Laravel eloquent join three table

Change your query like this :

$product =  product::Select("*")
            //->with('product_history','product_tour')
            //Use this with() for condition.
            ->with([
                   'ProductHistory' => function ($query){
                                    $query->select('*');
                   },
                   'ProductTour' => function ($query) use ($ProviderName) {
                                    $query->select('*')->where("provider_name", "=", $ProviderName);
                   },
            ])
            ->where('product.product_id', '1')
            ->get()
            ->toArray();

Here is the code for model file:

namespace App;
use DB;
use Illuminate\Database\Eloquent\Model;

class Product extends Model
{
    public function producthistory()
    {
        return $this->hasMany('App\ProductHistory', 'product_id','history_id');        
    }
    public function producttour()
    {
        return $this->hasMany('App\ProductTour', 'product_id','tour_id');        
    }

}

And model files for the other tables named as Product_history and product_tour

namespace App;

use Illuminate\Database\Eloquent\Model;

class ProductHistory extends Model
{    

    public function products()
    {
        return $this->belongsTo('App\Product', 'history_id','product_id');
    }

}

And

namespace App;

use Illuminate\Database\Eloquent\Model;

class ProductTour extends Model
{    

    public function products()
    {
        return $this->belongsTo('App\Product', 'tour_id','product_id');
    }

}

How to join 3 tables using laravel eloquent

//post model

public function comments(){
    return $this->hasMany('App\Comments', 'post_id', 'id');
}

//comments model

public function user(){
    return $this->belongsTo('App\Profile', 'user_id');
}

//profile model

public function comments(){
    return $this->hasMany('App\Comments');
}

and i call it in the controller using:

$posts = Posts::with('userProfile','comments', 'comments.user')->get();

Then it works:)
Thank you for some help and idea :)

How to make relationship between three table in laravel eloquent

You can use nested relation in with like below.So it will fetch question options also

 $data=Section::with(['questions','questions.options'])
                            ->where('formid',$formId)
                            ->orderBy('sectionid')
                            ->get()
                            ->toJson();

Laravel Query Builder - Join three tables (A one to many B, B one to many C)

Leveraging Eloquent Relationships

Models & Relationships

class Country extends Model
{
    public function states()
    {
        return $this->hasMany(State::class);
    }
}

class State extends Model
{
    public function country()
    {
        return $this->belongsTo(Country::class);
    }

    public function cities()
    {
        return $this->hasMany(City::class);
    }
}

class City extends Model
{
    public function state()
    {
        return $this->belongTo(State::class);
    }
}

Query

$countries = Country::query()
    ->with('states.cities')
    ->get();

Laravel eloquent with multiple inner joins

Models\Entries.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Entries extends Model
{
    public function Tasks(){
        return $this->hasOne(Tasks::class);
    }
    public function Class(){
        return $this->hasMany(Classes::class);
    }
    public function SubClasses(){
        return $this->hasOne(SubClasses::class);
    }
}

Models\Tasks.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Tasks extends Model
{
    public function Entries(){
        return $this->belongsTo(Entries::class, "id", "task_id");
    }
}

Models\Classes.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Classes extends Model
{
    public function Entries(){
        return $this->belongsTo(Entries::class, "class_id", "id");
    }
}

Models\Subclasses.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class SubClasses extends Model
{
    public function Entries(){
        
        return $this->belongsTo(Entries::class, "id", "subclass_id");
        
    }
}

Query:

Entries::with([
        "Tasks",
        "Classes",
        "SubClasses"
    ])
    ->where("opportunity_id", $opportunity->id)
    ->groupBy("task_id")
    ->get();

How to Join Three Table by Laravel Eloquent Model