I have a website where I am wanting to get some query results through AJAX and JSON, but I have absolutely no idea how to do it, I have this function,
public function category() {
$table = $this->uri->segment(2);
$content_id = $this->uri->segment(3);
$data['content'] = $this->site_model->get_content($table, $content_id);
$this->load->view('template/right-content', $data);
}
Essentially the query that is run is dynamic depending on what url is being passed, what I need to is, for the user clicks a link something like
Read the blog
From this link I get blog and 1 passed to the query, but I need to load the results in a view that is loaded in to my main template and then everytime a link is clicked do the same thing without overwriting the previous data, does anyone have any idea how to do this?
If I understand you correctly, you need to send an Ajax request to that url and then append it to the appropriate place in your document. Something like this:
$("#blog").click(function () {
var url = $(this).attr("href");
$.ajax ({
url: url,
type: "POST",
success : function (html) {
$("#someDiv").append(html);
}
});
});
So that Codeigniter view should only contain the content, really, and perhaps some markup necessary to style it. The containers where the content goes should already be in the page where the link is originating.
Or, if you want actually want your data to come back as JSON you could do something like this
public function category() {
$table = $this->uri->segment(2);
$content_id = $this->uri->segment(3);
echo json_encode($this->site_model->get_content($table, $content_id));
}
AND, if you use the above authors method of using $.append, you'd want to modify your controller as such:
public function category() {
$table = $this->uri->segment(2);
$content_id = $this->uri->segment(3);
$data['content'] = $this->site_model->get_content($table, $content_id);
echo $this->load->view('template/right-content', $data, TRUE);
}
Related
I am Trying To Reload Contents Of Page. Through link button Filter In PHP
By Passing Some Value Through Query String To Controller Method.
The Controller Method Loads The Same Page From Where I am Passing Query String.
But The View Is Not Reloading.
But If I Call The Controller Method Some Other View It Works Fine.
here is my code
mainview.php
English
maincontroller.php
Here Is The Index Method Of Controller.
$movielanguage=$this->input->get('language');
if(!empty($movielanguage))
{
$moviedata['popularmovies']=$this->main_model-
>getmoviebylanguage($movielanguage);
}
$moviedata['allmovies']=$this->main_model->getAllMovies();
$this->load->view('home/mainview.php',$moviedata);
}
Here View Does Not Refresh Its Contents
How Can I Solve This
Hope this will help you :
First if you want a single view ,should put you code it in if else condition and second assign your data in same variable
Your code should be like this :
public function index()
{
$movielanguage=$this->input->get('language');
if(! empty($movielanguage))
{
$moviedata['movies']=$this->main_model->getmoviebylanguage($movielanguage);
}
else
{
$moviedata['movies']=$this->main_model->getAllMovies();
}
$this->load->view('home/mainview.php',$moviedata);
}
Second : and if you want to add different view for different category of movies
You can do like this :
public function index()
{
$movielanguage=$this->input->get('language');
if(! empty($movielanguage))
{
$moviedata['popularmovies']=$this->main_model->getmoviebylanguage($movielanguage);
/*popularview is just an example*/
$this->load->view('home/popularview.php',$moviedata);
}
else
{
$moviedata['allmovies']=$this->main_model->getAllMovies();
/*allview is just an example*/
$this->load->view('home/allview.php',$moviedata);
}
}
please help me, this is simple thing but I don't know why this still keep error for an hour,
on my view I've got :
<a href="admin/editProduct?idd=$id">
on my controller that directed from above :
public function editProduct(){
$data["id"] = $_GET['idd'];
$data["produk"] = $this->model_get->get_data_list(2);
//this below doesn't work either, i just want to past the parameter to my model
//$data["produk"] = $this->model_get->get_data_list($_GET['idd']);
$this->adminHeader();
$this->load->view("adminPages/editProduct", $data);
$this->adminFooter();
}
I can not use the array id. It keeps telling me undefined variable idd.
I don't know what to do anymore, please anyone help!
I am using Codeigniter framework
Change your view as:
<a href="admin/editProduct/<?php echo $id;?>">
And in the controller, either get the id as parameter,
public function editProduct($id) {
}
or as uri segment
public function editProduct() {
$id = $this->uri->segment(3);
}
Change your link (in view) with this
<a href="admin/editProduct/$id">
And change your controller as
public function editProduct($id) {
}
Then user $id inside your controller
Make the href link as follows:
...
And edit the controller like this:
public function editProduct($id){
...
$this->model_get->get_data_list($id);
}
Where $id will be the passed $id.
make
try this this works fine
public function editProduct()
{
$id=$this->uri->segment(3);
$data["produk"] = $this->model_get->get_data_list($id);
$this->adminHeader();
$this->load->view("adminPages/editProduct", $data);
$this->adminFooter();
}
I am starting to learn codeigniters active record and i am querying my database using parameters passed from the controller to the model.
First i am passing the id from the controller to the model and that works.
Controller
function bret($id){
$this->load->model('school_model');
$data = $this->school_model->get_city_and_population($id);
foreach ($data as $row)
{
echo "<b>Name Of The City</b>...........". $row['Name'];
echo "<br/>";
echo "<b>Total Population</b>...........".$row['Population'];
}
}
Model
function get_city_and_population($id){
$this->db->select('Name,Population');
$query = $this->db->get_where('city', array('ID'=>$id));
return $query->result_array();
}
I went ahead and put in multiple parameters expecting to fail but this works but i am not so sure why it worked or what worked.
Controller
public function parameters($id,$name,$district){
$this->load->model('school_model');
$data = $this->school_model->multiple_parameters($id,$name,$district);
foreach ($data as $row)
{
echo "<b>Total Population</b>...........".$row['Population'];
}
}
Model
function multiple_parameters($id,$name,$district){
$this->db->select('Population');
$query = $this->db->get_where('city', array('ID'=>$id,'Name'=>$name,'District'=>$district));
return $query->result_array();
}
In my multiple parameters example i visited http://example.com/env/at/index.php/frontpage/parameters/7/Haag/Zuid-Holland/
Here,i know the name Haag is in id 7 and the district is Zuid-Holland
Here are my questions.How does codeigniter know how to pass the parameters from the url to the model and secondly,what if i was slightly wrong like 7/Haag/Zuid-Hollandes/,how would i show the user that,that url is wrong and fallback to a default value instead of showing blank when the parameters are wrong?.
//In codeiginter URI contains more then two segments they will be passed to your function as parameters.
//if Url: http://example.com/env/at/index.php/frontpage/parameters/7/Haag/Zuid-Holland/
//Controller: forntpage
public function parameters($id,$name,$district){
echo $id.'-'$name.'-'.$district;
}
//and if you are manually getting url from segment & want to set default value instead of blank then use following:
public function parameters(
$this->load->helper("helper");
$variable=$this->uri->segment(segment_no,default value);
//$id=$this->uri->segment(3,0);
}
//or
//Controller: forntpage
public function parameters($id='defaultvalue',$name='defaultvalue',$district='defaultvalue'){
echo $id.'-'$name.'-'.$district;
}
That's just simple uri mapping in CI, or uri param binding if you will.
When you have a method like:
public function something($param1, $param2) {
// get from: controller/something/first-param/second-param
}
That means your uri segments are passed as arguments to your controller method.
The above method could be written as:
public function something() {
$param1 = $this->uri->segment(3);
$param2 = $this->uri->segment(4);
// segment 1 is the controller, segment 2 is the action/method.
}
You need to understand that you have to manually check if the uri segments are exactly what you want them to be, as CI doesn't do anything else than this mapping.
Next, if you want to have some defaults, following statement is true:
public function something($param1 = 'some default value', $param2 = 'other value') {
// get from: controller/something/first-param/second-param
}
That is, if a url like: /controller/something is passed along, you will still get your default values back. When controller/something/test is passed, your first param is overridden by the one from the url (test).
That's pretty much it.
I am trying to save multiple images on the server. Lets start from the beginning:
//I use this function for testing
function testSave(){
$this->_renderChart(156);
}
//This function takes chart_id as a parameter to render a proper chart.
function _renderChart($chart_id = null){
if(!$chart_id)
return false;
$chartFilterList = $this->getChartFilterListFromId($chart_id);
$this->loadChartFromId($chart_id, $chartFilterList);
$this->layout = 'analytics\chart_one.ctp';
}
The above function's view contains all the necessary scripts to render the chart. This is the part that is translating the rendered chart into base64string and saves it:
//../views/layouts/analytics/chart_one.ctp
<script type="text/javascript">
$(document).ready(function(){
saveChartAsImage('#chart1');
});
</script>
And the above function's body:
function saveChartAsImage(div){
var base64string = $(div).jqplotToImageStr();
$.ajax({
url: 'saveImage',
type: "POST",
dataType: "html",
data:"data=" + base64string
});
}
}
This is not even close to be working. Am I doing something wrong here?
If these functions are controller actions you can use $this->response->body() in controller's afterFilter() callback to get the response content and save it to file. If these are helper functions you can get the content in afterLayout() or afterRender() callbacks of the helper using $this->_View->Blocks->get('content');
I advise creating a behavior, and add the action beforeValidate();
After that make the conditions necessary to invoke the specific actions (listed in your question).
Example:
app/Model/Behavior/ChartBehavior.php
class ChartBehavior extends ModelBehavior {
// if necessary, create a setup action
public function setup(Model $Model, $settings = array()) { }
public function upload(Model $Model) {
// use the $Model->data to see all information from your form
debug($Mode->data);
// now call your functions below to upload
}
public function line_chart($chart_id = null){
//magic...
}
public function bar_chart($chart_id = null){
//magic...
}
public function pie_chart($chart_id = null){
//magic...
}
I hope it helps you.
I want to pass a language id for each link i click from my view to controller.
My view code is
<?php foreach ($languages as $lang) { ?>
<li>
</li>
<?php } ?>
My controller is
public function box($box_id=null, $language_name=null, $language_id=null) {
/// my function code
echo $box_id;
echo $language_name;
echo $language_id;
$data['languages'] = $this->Home_model->getLanguages($box_id);
}
The languages array contain the language id and language name
i want the name to be in url but not the id
The url looks like this
http://localhost/mediabox/home/box/12/en
if i send the language id in url it is then visible otherwise it is not visible in the controller.
How can I get language id for each link in controller without sending it in url
Thanks
pass the language name in the url without the ID, compare to languag_name column in table.
Lets assume you have url: http://localhost/mediabox/home/box/en
controller
<?php
# I wont write a controller but you should know how to do that, im also writing code as if you are just focusing on getting language.
public function box( /**pass in your other uri params as needed **/ $lang_name = 'en'){
#you could load this in the constructor so you dont have to load it each time, or in autoload.php if your using it site wide.
$this->load->model('lang_model', 'langModel');
#this example shows loading the library and running the function
$this->load->library('lang_library');
$this->lang_library->_getLang($lang);
#this example shows putting the getLang function inside the controller itsself.
self::_getLang($lang);
}
library/private function
<?php
private functon _getLang($lang = 'en'){
#run the query to retrieve the lang based on the lang_name, returns object of lang incl id
$lang = $this->langModel->getLang($lang_name);
if (!$lang){
die('language not found');
}else{
return $lang;
}
lang model
<?php
public function getLang($lang_name = 'en'){
$this->db->where('lang_name', $lang_name);
$this->db->limit(1);
$q = $this->db->get('languages');
if ($q->mysql_num_rows > 0){
return $q->result();
}else{
return false;
}
}
you will then have a variable with object associated to it then you can simply call $lang->lang_name; or $lang->lang_id;
Session storage
<?php
#you could call this in the beginning after using an ajax `$.post();` to retrieve the ID.. the easiest route though is whats above. I use this in my REST APIs
$this->session->set_userdata('lang', $lang);
Your confusion is in 'passing back' to the controller. Don't think of it as from controller => View (passing it say $data['something'] variables).
Its basically a <form>, so take a look at form helper and then at form validation.
That will give you an idea of how to create a form using codeigniter syntax.
In your controller, you would do a validation, and if it matches the language (or whatever you submit), then you can utilize sessions to save it for every page (so you don't need it in the URL).
Sessions are very simple and saving an item is as easy as:
$this->session->set_userdata('varname', 'value');
Later, on every other controller, you can check the variable
$language = $this->session->userdata('varname');
// load language etc;
Make a table with language ID and Language name in the database, just pass the language name to the controller and get the language ID by doing a db call.
You could do it using jQuery. Something like;
In View;
<ul id="language_selector">
<?php foreach ($languages as $lang) { ?>
<li>
<a href="javascript:;" class="change-language" data-language="<?php echo $lang['language_name']?>" data-box="<?php echo $template_data['box_id']?>">
<img src="<?php echo base_url(); ?>public/default/version01/images/country_<?php echo $lang['language_name'] ?>.png" width="27" height="18" border="0" />
</a>
</li>
<?php } ?>
</ul>
The JS;
$(function() {
$('.change-language').live('click', function() {
var language_name = $(this).data('language');
var box_id = $(this).data('box');
$.ajax({
url: '/home/box/'+language_name,
type: 'post',
data: 'box_id='+box_id,
success: function( data ) {
self.parent.location.reload();
},
error: function( data ) {
alert('oops, try again');
}
});
});
});
The controller:
public function box($language) {
$box_id = $this->input->post('box_id');
// do a llokup on the language as suggested by #vivek
}
You are telling CodeIgniter that you will be receiving both the language name and id in your action.
public function box($box_id=null, $language_name=null, $language_id=null) {
}
Change that to just
public function box($box_id=null, $language_name=null) {
}
For your example URL you should then get $box_id == 12 and $language_name == 'en'.
Then lookup the language id by using it's name either in a helper or as part of a Language model as Mike suggests.