for listing values from db using codeigniter rest for web service -

to list values db have been using followin code

model

function user_list_community($servicename) {         $ipjson = json_encode($input);         $this->db->select('*');         $this->db->from('community');         //$this->db->where('user_id', $input['user_id']);         $query = $this->db->get();         $result = $query->result();         if (!empty($result)) {             $data['list_community']= $result;             $data['message'] = 'user details retrieved successfully.';             $status = $this->ville_lib->return_status('success', $servicename, $data, $ipjson);         } else {             $data['message'] = 'unable retrieve.please user id';             $status = $this->ville_lib->return_status('error', $servicename, $data, $ipjson);         }         return $status;     } 

controller

function list_community_post(){          $servicename = 'list_community';          $retvals = $this->user_model->user_list_community($input, $servicename);          header("content-type: application/json");         echo $retvals;         exit;     } 

the issue facing getting values getting error follows. wrong doing here. can me . thanks.

php error encountered

severity: notice

message: undefined variable: input

filename: controllers/users.php

line number: 57

php error encountered

severity: notice

message: undefined variable: input

filename: models/user_model.php

line number: 67

you getting error because $input not defined in code. should either this:

    function list_community_post(){     $input='';     $servicename = 'list_community';     $retvals = $this->user_model->user_list_community($input, $servicename);     header("content-type: application/json");     echo $retvals;     exit;   } 

or

    function list_community_post(){     $servicename = 'list_community';     $retvals = $this->user_model->user_list_community($servicename);     header("content-type: application/json");     echo $retvals;     exit;   }