Unable to get records by join with where clause - php

Question

I have 2 tables. first users second post. without where clause I got all user post but I want to display only logged in user data. here is table structure for my tables. both tables has common value by user.id = post.user_id
First Table User Second Table Post
ID id
NAME user_id
Username category_id
Password user_id
title
body
My Query to get all records but doesn't logged in user records
public function get_posts(){
$this->db->order_by('posts.id', 'DESC');
$this->db->join('categories', 'categories.id = posts.category_id');
$query = $this->db->get('posts');
return $query->result_array();
}

Answer 1

Hope this will help you :
Here $user_id is id of logged in user should be passed to the model from controller
public function get_posts($user_id)
{
$this->db->select('*');
$this->db->from('posts');
$this->db->order_by('posts.id', 'DESC');
$this->db->join('users', 'users.id= posts.user_id');
$this->db->where('users.id',$user_id);
$query = $this->db->get();
return $query->result_array();
}

Answer 2

try this,
public function get_posts()
{
$this->db->select('*');
$this->db->from('posts');
$this->db->join('users', 'users.id = posts.user_id');
$this->db->join('categories', 'categories.id = posts.category_id');
$this->db->order_by('posts.id', 'DESC');
$query = $this->db->get();
return $query->result_array();
}

Answer 3

you can use it like this , just replace $user_id variable with your dynamic post user id value
$this->db->select('a.*');
$this->db->from('user a');
$this->db->join('post b', 'b.user_id = a.id', 'left');
$this->db->where('a.id', $user_id);
$data_array = $this->db->get()->result_array();
return $data_array ;
Hope this will help you ....