Save multiple images fetched in Cakephp - php

Question

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?

Answer 1

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');

Answer 2

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.