how to run a query in looping in laravel? - php

Question

im sory, im noob in laravel. later, im build web just use php native, and i have code like this
$query1 = select * from user where id='$id';
while($data1 = mysql_fetch_array($query1){
$query2 = select * from komen where iduser=$data['id'];
}
so to convert to laravel be what.
I already read the documentation laravel but did not find

Answer 1

Where id = $id should only return 1 value (given that id is your unique primary key), so you would never have to loop through the result of your $query1, it's just 1 or nothing.
Best thing you can do to fetch the related Komen is to setup a relation in the model. For more info see: https://laravel.com/docs/5.3/eloquent-relationships
Best option for you is to create the User model first (already exists after Laravel installation) and add the komens() relation (1:n)
use Illuminate\Database\Eloquent\Model;
class User extends Model
{
protected $table = 'user'; // should be users
// define has many relationship
public function komens()
{
// you will have to set userid, as laravel searches for user_id (singular tablename _ key)
return $this->hasMany(Komen::class, 'userid');
}
}
Then create the Komen model (check your naming conventions, laravel looks for the table name as the lowercase snake_cased plural version of your model name, so in this case komens. If you want to overwrite this, you have to set the protected $table = 'komen';
use Illuminate\Database\Eloquent\Model;
class Komen extends Model
{
protected $table = 'komen'; // should be komens
// define the inverse of the user model's komens() method
public function user()
{
return $this->belongsTo(User::class, 'userid');
}
}
Now in your code you can do something like this:
// fetch the user by id
$user = User::find($id);
// check if user exists
if ($user) {
// fetch all related komens from the database and loop through the collection
$user->komens->each(function($komen) {
// do foo here
dump($komen);
});
}
Check out the Eloquent ORM documentation here: https://laravel.com/docs/5.3/eloquent

Answer 2

First create the UserModel and KomenModel.
then use this
$queryData = UserModel::find($id);
foreach ($queryData as $data) {
$query2 = KomenModel::find($data->id);
}
or instead of above code you can do this using laravel join query.

Answer 3

There are two way of creating Queries...
1.Query...using normal DB::table...
2.Eloquent Model...
description
1.
`$data = DB::table('Tablname')->where('id',$id)->all();`
in here USE DB;
and there are severl methods such as all() , get()
2.
$this->model->where($attrib, '=', $value)->get();
where we go from the model option...
But as i understood you can go with DB query method..
$result= DB::table('komen')->where('id', $id)->all();
//check the previous query have got any data...
if($result)
{
//go for the second Query.....
}
If there is any need just mention...I am also new to laravel 5.3

Answer 4

You can get by following code without use any model.
$Data = DB::table('user')->where('id', '=', $id)->get();
foreach ($Data as $data) {
$query2 = DB::table('komen')->where('iduser', '=', $data->id)->get();
}