Laravel compare between date field and date now - php

Question

I am trying to compare between date field that saved to my database and current date!
The circle is:
admin will add a new career with deadline date
when someone fill the application he/she will see the available jobs only in drop down list ( that its deadline date less than the current date )
so this is the Jobs model
protected $fillable = ['job_name','job_req', 'expire'];
this is jobs migrations
public function up()
{
Schema::create('jobs', function(Blueprint $table)
{
$table->increments('id');
$table->string('job_name');
$table->string('job_req');
$table->date('expire');
$table->timestamps();
});
}
public function down()
{
Schema::drop('jobs');
}
this is the ApplicationController.php
public function create()
{
$dt = Carbon::now()->toDateString();
$jobs = Jobs::get()->where('$dt', '<', 'expire');
return view('post.create',compact('jobs'));
}
Now when i open application form it doesn't returns any job title, but when i remove where clause from the controller it works well!

Answer 1

change
$jobs = Jobs::get()->where('$dt', '<', 'expire');
to
$jobs = Jobs::where('expire', '>', $dt)->get();
->get() will do query instantly, you must use ->where() before it.
Use ->where after ->get(), you will call this function
http://laravel.com/api/5.1/Illuminate/Database/Eloquent/Collection.html#method_where