Laravel query writing - php

Question

I am developing a project in Laravel 5.4. I want to write a select, insert and update query in my model that should work for any table in database. I used to do this is Codeigniter and work fine there, but I don't know how to use it in Laravel.
Following is the code from a model file in Codeigniter
class General_Model extends CI_Model {
public function fetch_CoustomQuery($sql){
$query = $this->db->query($sql);
return $query->result();
}
public function create_record($data, $tbl)
{
$this->db->set($data);
$this->db->insert($tbl);
return ($this->db->affected_rows() != 1) ? FALSE : TRUE;
}
public function update_record($data, $tbl, $wher)
{
$this->db->where($wher);
$this->db->set($data);
$this->db->update($tbl);
}
public function delete_record($tbl, $wher)
{
$this->db->where($wher);
$this->db->delete($tbl);
}
}
It was very easy in Codeigniter. I only need to pass the parameters and worked fine. I want to write same queries in my model in Laravel. Please help

Answer 1

I would strongly recommend reading the documentation but the methods are as simple as:
GeneralModel::create(["num" => 1, "name" => 2]);
GeneralModel::where("num", ">", 2)->update(["num" => 1]);
GeneralModel::where("num", ">", 2)->delete();
There is no need to put these methods on the models.

Answer 2

if you really want something like that then you can have function there that accepts models as parameter:
public function create_record($model,$data)
{
$model::create($data);
}
where in the controller you can do something like
$model = App\Fruit; // lets say fruit is a model you have
GeneralModel::create_record($model,$data);
but why not just go straight with it like:
$var = App\Fruit::create($data);
this is redundant .. for each model have a way to fetch , insert , update or delete records from their perspective table .. i suggest you read more documentation about Laravel Eloquent