how to get value by jQuery+Codeigniter and show in input field? - php

Question

I got some problem about receive value from server , and show the value in input .
Sometimes, if I want to show the value in page, I will use the POST method, then set the input'ID in controller and model, and use foreach() in page you want to show , therefore the work is done.
But, if I want to show the value in input'field, how I need to do for it ?
I write some code for this and try to use AJAX receive and show in input, it's not working,can everybody help me to solve this problem , please....... Σ( ￣□￣；)
I try to create a new model and a new page for it, there is a very simple form, the code is below:
view:kungfu.php
<div style="width:250px;float:left;">
<form id="pr_form" action="<?php echo site_url();?>/static_data/kungfu_act" method="post">
NUM：<input id="num" name="num" type="text" class="field_set"><br>
NAME：<input id="name" name="name" type="text" class="field_set"><br>
LOCAL：<input id="local" name="local" type="text" class="field_set"><br>
KUNGFU：<input id="kungfu" name="kungfu" type="text" class="field_set"><br>
</div>
<div style="float:left;">
<span id="loading" style="display:none">Loading!!</span><br>
<span id="complete" style="display:none">Complete!!</span>
</div>
<div style="clear:both;height:50px;padding-top:10px">
<input id="query" name="query" class="btn" type="button" value="QUERY">
</div>
</form>
</div>
model:pr_model.php
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Pr_model extends CI_Model {
function __construct()
{
parent::__construct();
$this->load->helper('form');
$this->load->helper('html');
$this->load->database();
}
function pr_query()
{
$query=$this->db->get("kungfu_table");
return $query->result();
}
}
controller:static_data.php
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Static_data extends CI_Controller {
public function kungfu()
{
$this->load->view('kungfu');
}
public function kungfu_query()
{
$this->load->model("pr_model");
$data = array(
"kungfu" =>$this->pr_model->pr_query()
);
echo json_encode($data);
}
}
if I want to show the value in normal page , I will use foreach() but I don't know how to show in input, I try to use getjson() , but no working . can somebody teach me ?
// 2013/11/30 re-edit
dear Suleman:
I try to write some code about .ajax() , but I still got problem , the other section was the same , but the controller had be change :
controller:static_data.php
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Static_data extends CI_Controller {
public function kungfu()
{
$this->load->view('kungfu');
}
public function kungfu_maxquery()
{
$this->load->model("pr_model");
$data = $this->pr_model->pr_maxquery();
$max=json_encode($data);
echo $max;
}
}
model:pr_model.php
function pr_maxquery()
{
$this->db->select_max("num");
$maxquery=$this->db->get("kungfu_table");
return $maxquery->result();
}
and I try to edit a js file for .ajax(),but the Chrome console tell me "Uncaught ReferenceError: maxnum is not defined " , can you tell me how to edit it ?
$("#newone").click(function(){
$("#num").val(function(){
max_response = $.ajax({
type:"POST",
url:"<?php echo base_url()?>/static_data/kungfu_maxquery",
cache:false,
data: "num:"+maxnum
});
max_response.done(function(){
return maxnum;
});
});
});

Answer 1

Make sure your model data is available in view, If available then need to alter your inpup fields:
NUM：<input id="num" value="<?php echo $data_for_first_input_filed; ?>" name="num" type="text" class="field_set"><br>
NAME：<input id="name" value="<?php echo $data_for_second_input_filed; ?>" name="name" type="text" class="field_set"><br>
LOCAL：<input id="local" value="<?php echo $data_for_third_input_filed; ?>" name="local" type="text" class="field_set"><br>
KUNGFU：<input id="kungfu" value="<?php echo $data_for_forth_input_filed; ?>" name="kungfu" type="text" class="field_set"><br>
If you want to append data through AJAX, then here is sample code:
$("#newone").click(function(){
$.ajax({
url: "<?php echo base_url()?>/static_data/kungfu_maxquery",
type: "POST",
data: {
'num':maxnum
},
cache: false,
success: function(data) {
console.log(data);
$("#num").val(data['filed_name_returned']);
$("#name").val(data['filed_name_returned']);
$("#local").val(data['filed_name_returned']);
$("#kungfu").val(data['filed_name_returned']);
}
});
});
AJAX request is not a cheap call, we can get all the data in one request and can set that available data in success function. I do't know your table structure that' why I have appended one line extra console.log(data); that will show your returned data in console.