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What am I doing wrong? Block needs to be put into "Edit Mode" before updating dynamic content

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I have a block which I am trying to create dynamic content in.

Every time the page loads I am selecting another image and attempting to display this.

In a normal PHP file this would work as I load a random file each time, I had thought that the code below was loaded on each instance of the block view? but unless I go in and edit the content and press Update nothing changes.

I have no cache turned on(cleared also now) but am unable to get a different image to load?

can anyone point out any tips or pointer on how I can achieve this?
[I have tried running the random code on render/on_page_view/view from within the controller but none seem to do what I want ]

Do I need to move the calculations away from the view and back into the controller?

<?php
$array = array(1,4,5); //image positions in the db I would like to check
shuffle($array);
$rand = rand(1,3)-1;//index of array
$imageNo = $array[$rand];
//should this be done in the controller?
$found=false;
   foreach($array as $a=>$v){
      if (!empty(${'field_'.$v.'_image'})){
         $imageNo = $v;
      }
   }
?>
   <?php 
   for($i=0;$i<3;$i++){
Viewing 15 lines of 26 lines. View entire code block.
TheRealSean
 
olliephillips replied on at Permalink Reply
olliephillips
Your shuffle routine is enough to make the images random. If you pull the same index of that array each time $array[0], the fact that shuffle reorders your array, means you'll be getting a random image number.

Not saying that is why you're getting the same image, but rand has caused me problems in the past - if I understand what you are trying to achieve correctly you don't need to use rand.

Hope that helps
TheRealSean replied on at Permalink Reply
TheRealSean
Got you, I have removed the random call.

But you where correct it does not affect the image actually loading,
unless I go back into edit mode.

I will have a go and try to move the calculations to the controller and see if that makes a difference?