Inner Join-Laravel - php

Question

I have three tables in my database. User, Employer and Jobs.
Some Users are Employers who have posted some jobs.
I am trying to display jobs by users.
My code:
User Model
public function jobs(){
return $this->hasManyThrough('App\Employer','App\Job');
}
Routes:
Route::get('/find_user_jobs',function(){
$user=User::find(1);
foreach($user->jobs as $job){
echo $job->created_at."<br>";
}
});
But I get this error
Column not found: 1054 Unknown column 'jobs.user_id' in 'field list' (SQL: select `employers`.*, `jobs`.`user_id` from `employers` inner join `jobs` on `jobs`.`id` = `employers`.`job_id` where `jobs`.`user_id` = 1)
I get that its trying to find user_id in jobs but here is what I want it to do
My desire for the program
When I give the user id, go to employers table search for user_id, if it exists ,go to jobs table and search for the employers_id and return all the jobs with the employer_id.
User Migration
<?php
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateUsersTable extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('email')->unique();
$table->string('password');
$table->integer('employer_id');
$table->rememberToken();
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::drop('users');
}
}
Job migration
<?php
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateJobsTable extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('jobs', function (Blueprint $table) {
$table->increments('id');
$table->integer('employer_id');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::drop('jobs');
}
}
Employer Migration
<?php
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateEmployersTable extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('employers', function (Blueprint $table) {
$table->increments('id');
$table->string('company_name');
$table->integer('user_id');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::drop('employers');
}
}

Answer 1

The relationship arguments are in the wrong order:
public function jobs(){
return $this->hasManyThrough('App\Job', 'App\Employer');
}

Answer 2

Because Employee are User who have Jobs you can create a model App\Employee which extends the App\User Model
class Job {
public function employee()
{
return $this->belongsTo(App\Employee::class,'user_id');
}
}
and Create an Employee class like this
Here in the Employee Model I set the $table property to users, when we make some query that query will have the target table set to users instead of the employees table which would be the default behavior of Eloquent.
class Employee extends User
{
protected $table = "users";
public function jobs()
{
return $this->hasMany(Job::class, 'user_id');
}
}
You can use directly the Employee Model and get jobs
And here are the corresponding migration
the create_user_table
class CreateUsersTable extends Migration
{
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('email')->unique();
$table->string('password');
$table->string('company_name')->nullable();
$table->rememberToken();
$table->timestamps();
});
}
public function down()
{
Schema::drop('users');
}
}
The create_job_table
class CreateJobsTable extends Migration
{
public function up()
{
Schema::create('jobs', function (Blueprint $table) {
$table->increments('id');
$table->integer("user_id")->unsigned();
$table->foreign('user_id')->references('id')->on('users');
$table->timestamps();
});
}
public function down()
{
Schema::drop('jobs');
}
}