codeigniter - Call to a member function query() on a non-object - php

Question

I'm using xampp 1.77 version, codeigniter 1.7.2 with flexigrid.
I follow step by step this tutorial https://gembelzillonmendonk.wordpress.com/2010/06/28/flexigrid-and-codeigniter-with-advanced-searching-with-example/#comment-353 but I don't understand which code must have flexigrid.php in CI_Folder\system\application\controllers\flexigrid.php.
My flexigrid.php code is this:
<?php
class Flexigrid extends Controller {
function Flexigrid ()
{
parent::Controller();
$this->load->helper('flexigrid');
}
function index()
{
//ver lib
$this->load->model('ajax_model');
$records = $this->ajax_model->get_select_countries();
$options = '';
foreach( $records as $v ) {
$options .= $v['name'] . ';';
}
$options = substr($options, 0, -1);
/*
* 0 - display name
* 1 - width
* 2 - sortable
* 3 - align
* 4 - searchable (2 -> yes and default, 1 -> yes, 0 -> no.)
*/
$colModel['id'] = array('ID',40,TRUE,'center',2);
$colModel['iso'] = array('ISO',40,TRUE,'center',0);
$colModel['name'] = array('Name',180,TRUE,'left',1);
$colModel['printable_name'] = array('Printable Name',120,TRUE,'left',1,'options' => array('type' => 'date'));
$colModel['iso3'] = array('ISO3',130, TRUE,'left',1, 'options' => array('type' => 'select', 'edit_options' => $options));
$colModel['numcode'] = array('Number Code',80, TRUE, 'right',1, 'options' => array('type' => 'select', 'edit_options' => ":All;AND:AND;KK:KK;RE:RE"));
$colModel['actions'] = array('Actions',80, FALSE, 'right',0);
/*
* Aditional Parameters
*/
$gridParams = array(
'width' => 'auto',
'height' => 400,
'rp' => 15,
'rpOptions' => '[10,15,20,25,40]',
'pagestat' => 'Displaying: {from} to {to} of {total} items.',
'blockOpacity' => 0.5,
'title' => 'Hello',
'showTableToggleBtn' => true
);
/*
* 0 - display name
* 1 - bclass
* 2 - onpress
*/
$buttons[] = array('Delete','delete','test');
$buttons[] = array('separator');
$buttons[] = array('Select All','add','test');
$buttons[] = array('DeSelect All','delete','test');
$buttons[] = array('separator');
//Build js
//View helpers/flexigrid_helper.php for more information about the params on this function
$grid_js = build_grid_js('flex1',site_url("/ajax"),$colModel,'id','asc',$gridParams,$buttons);
$data['js_grid'] = $grid_js;
$data['version'] = "0.36";
$data['download_file'] = "Flexigrid_CI_v0.36.rar";
$this->load->view('flexigrid',$data);
}
function example ()
{
$data['version'] = "0.36";
$data['download_file'] = "Flexigrid_CI_v0.36.rar";
$this->load->view('example',$data);
}
}
?>
When i type http://127.0.0.1/flexiadvanced/index.php/flexigrid browser give me a error:
Fatal error: Call to a member function query() on a non-object in C:\xampp\htdocs\flexiadvanced\system\application\models\ajax_model.php on line 34
this is the code of ajax_model.php
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* Eye View Design CMS module Ajax Model
*
* PHP version 5
*
* #category CodeIgniter
* #package EVD CMS
* #author Frederico Carvalho
* #copyright 2008 Mentes 100Limites
* #version 0.1
*/
class Ajax_model extends Model
{
/**
* Instanciar o CI
*/
public function Ajax_model()
{
parent::Model();
$this->CI =& get_instance();
}
public function get_select_countries()
{
//Select table name
$table_name = "country";
//Build contents query
$separator = (string) ',';
//$this->db->select('concat(iso3, concat('. addcslashes($separator) .', iso3))')->from($table_name);
$query = $this->db->query("select concat(iso3, concat(':', iso3)) as name from country where iso3 is not null");
//Get contents
return $query->result_array();
}
public function get_countries()
{
//Select table name
$table_name = "country";
//Build contents query
$this->db->select('id,iso,name,printable_name,iso3,numcode')->from($table_name);
$this->CI->flexigrid->build_query();
//Get contents
$return['records'] = $this->db->get();
//echo $this->db->last_query();
//Build count query
$this->db->select('count(id) as record_count')->from($table_name);
$this->CI->flexigrid->build_query(FALSE);
$record_count = $this->db->get();
$row = $record_count->row();
//Get Record Count
$return['record_count'] = $row->record_count;
//Return all
return $return;
}
/**
* Remove country
* #param int country id
* #return boolean
*/
public function delete_country($country_id)
{
$delete_country = $this->db->query('DELETE FROM country WHERE id='.$country_id);
return TRUE;
}
}
?>
My database is called country and database table is called also country. This is information in CI_Folder\system\application\config
$db['default']['hostname'] = "localhost";
$db['default']['username'] = "root";
$db['default']['password'] = "";
$db['default']['database'] = "country";
$db['default']['dbdriver'] = "mysql";
Can you help me to write correct code inside flexigrid.php?
This is my code for CI_Folder\system\application\helpers\flexigrid_helper.php but is correct?
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* Flexigrid CodeIgniter implementation
*
* PHP version 5
*
* #category CodeIgniter
* #package Flexigrid CI
* #author Frederico Carvalho (frederico#eyeviewdesign.com)
* #version 0.3
* Copyright (c) 2008 Frederico Carvalho (http://flexigrid.eyeviewdesign.com)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*/
if (! function_exists('build_grid_js'))
{
/**
* Build Javascript to display grid
*
* #param grid id, or the div id
* #param url to make the ajax call
* #param array with colModel info:
* * 0 - display name
* * 1 - width
* * 2 - sortable
* * 3 - align
* * 4 - searchable (2 -> yes and default, 1 -> yes, 0 -> no.)
* * 5 - hidden (TRUE or FALSE, default is FALSE. This index is optional.)
* #param array with button info:
* * 0 - display name
* * 1 - bclass
* * 2 - onpress
* #param default sort column name
* #param default sort order
* #param array with aditional parameters
* #return string
*/
function build_grid_js($grid_id,$url,$colModel,$sortname,$sortorder,$gridParams = NULL,$buttons = NULL)
{
//Basic propreties
$grid_js = '<script type="text/javascript">$(document).ready(function(){';
$grid_js .= '$("#'.$grid_id.'").flexigrid({';
$grid_js .= "url: '".$url."',";
$grid_js .= "dataType: 'json',";
$grid_js .= "sortname: '".$sortname."',";
$grid_js .= "sortorder: '".$sortorder."',";
$grid_js .= "usepager: true,";
$grid_js .= "useRp: true,";
//Other propreties
if (is_array($gridParams))
{
//String exceptions that dont have ' '. Must be lower case.
$string_exceptions = array("rpoptions");
//Print propreties
foreach ($gridParams as $index => $value) {
//Check and print with or without ' '
if (is_numeric($value)) {
$grid_js .= $index.": ".$value.",";
}
else
{
if (is_bool($value))
if ($value == true)
$grid_js .= $index.": true,";
else
$grid_js .= $index.": false,";
else
if (in_array(strtolower($index),$string_exceptions))
$grid_js .= $index.": ".$value.",";
else
$grid_js .= $index.": '".$value."',";
}
}
}
$grid_js .= "colModel : [";
//Get colModel
foreach ($colModel as $index => $value) {
$grid_js .= "{display: '".$value[0]."', ".($value[2] ? "name : '".$index."', sortable: true," : "")." width : ".$value[1].", align: '".$value[3]."'".(isset($value[5]) && $value[5] ? ", hide : true" : "")."},";
//If item is searchable
if ($value[4] != 0)
{
//Start searchitems var
if (!isset($searchitems))
$searchitems = "searchitems : [";
$options = '';
if (isset($value['options'])) {
if (isset($value['options']['type'])) {
$options = ", type : '".$value['options']['type']."'";
switch($value['options']['type']) {
case 'select' : $options .= ", editoptions : { value : '" . $value['options']['edit_options'] . "' }"; break;
case 'date' :
case 'radio' :
case 'checkbox' :
default :
}
}
}
if ($value[4] == 2)
$searchitems .= "{display: '".$value[0]."', name : '".$index."', isdefault: true " .$options. "},";
else if ($value[4] == 1)
$searchitems .= "{display: '".$value[0]."', name : '".$index."' " .$options. "},";
}
}
//Remove the last ","
$grid_js = substr($grid_js,0,-1).'],';
$searchitems = substr($searchitems,0,-1).']';
//Add searchitems to grid
$grid_js .= $searchitems;
//Get buttons
if (is_array($buttons))
{
$grid_js .= ",buttons : [";
foreach ($buttons as $index => $value) {
if ($value[0] == 'separator')
$grid_js .= "{separator: true},";
else
$grid_js .= "{name: '".$value[0]."', bclass : '".$value[1]."', onpress : ".$value[2]."},";
}
//Remove the last ","
$grid_js = substr($grid_js,0,-1).']';
}
//Finalize
$grid_js .= "}); })</script>";
return $grid_js;
}
}
?>

Answer 1

I solve looking here: https://github.com/sameersemna/ci-flexigrid
Just download codeigniter-flexigrid project, import database and set database credentials in database.php.
This is the live example from github project:
http://ci-flexigrid.sameershemna.com/countries
I like this solution because you do not need grocery-crud library but just simply codeigniter
cheers