Getting Views Rows Data in Custom Module

Question

I dont know if im over thinking this but im not making much progress with my function. I am trying to get the values from views rows in my modules for example if I was to use $row->field_name inside of a view.tpl file then it would show the output of that row, except I am trying to do it in a module. Ultimately I am trying to render the image style of the 1st image that loads from the view. This is what I have so far.

function custom_module_views_pre_render(&$vars){
    if($vars->name == 'front_page'){
        $vars->result[0]->field_field_image[0]['rendered']['#image_style'] = 'front-page-scroll';           
    }
}

Update 1: I've attached a image of what I am trying to do seeing how when I use preview(); execute(); or render(); it makes the function stop working, actually it makes the whole site stop working. If I cant get to the field view result count which counts the the number a current node is then I can say if($views->view_result_counter == 1) then render just that node. The function would look something like this.

function custom_module_views_pre_render(&$vars){
    $views = views_get_current_view('front_page', 'page');
    if($views->name == 'front_page'){   
         if($views->views_result_counter == 1){
            $vars->result[0]->field_field_image[0]['rendered']['#image_style'] = 'front-page-scroll';
         }
    }
}

Here is a image of what I am trying to do, Now I currently have the 1st image rendering as I want it to but it keeps rendering the image of each page instead of it rendering one time only.

Now as for my view is there any reason why execute or render wouldnt work? this is what my view looks like.

any suggestions?

Answer 1

I think you are mixing the hook_views_pre_render with a themeing function. In the hook, there is no $vars, you get access directly to the $view - the entire view, not only a row. So you will be able to do something along the lines of:

function YOURMOD_views_pre_render($view) {
  if ($view->name == 'YOURVIEW' 
    && $view->current_display == 'YOUR_DISPLAY'
    && $view->query->pager->current_page == 0) {
    $row = $view->result[0];
    $row->field_YOUR_image[0]['rendered']['file']['#style_name'] = 'DIFFERENT_style';
  }
}

This way you just change the image style of the image and you can let drupal do the rest for you :).

Answer 2

as this site is not about php programming I will not go very deep into this. but what you are probably looking for is http://api.drupal.org/api/views/views.module/function/views_get_view_result/7

to render the view use $view->render();

further reference: http://drupal.org/node/342132

Answer 3

You might be over thinking this. If you have working code, but the problem is that the code keeps on working, then the issue is to stop it from working again after it has done its job once.

The way to make a function aware if its previous iterations is to use a static variable. Try wrapping your working code with a static variable and test it like:

  // Only process one image.
  static $first_image_done = FALSE;
  if ( !$first_image_done ) {
    ...working code ...
    $first_image_done = TRUE;
  }

That way the function knows it has already processed the first image, and will skip the process on further iterations.

EDIT after time in chat:

The satic variable approach is not working because infinite scroll still works as a pager, and separate queries are being made for each page of output.

The current page position is controlled through the $pager (object) property of the $views object. The test for the first page can be accomplished as follows:

  $pager = $vars->pager;
  // Check for 'first page' condition
  if ( !isset($pager->current_page) || $pager->current_page == 0) {
     $vars->result[0]->field_field_image[0]['rendered']['#image_style'] = 'front-page-scroll'; 
  }

This should limit the image resizing to the first page of the view.

Answer 4

I'm not exactly entirely following why you're working in your module.

Have you tried using 2 displays in your View? 1 regular display with a limit of 1 row, and an attachment display, displaying all results, but with an offset of 1, so that it skips the 1st row. You can then change the Image preset on the regular View, but keep using thumbnail preset in the attachment View.

Or - I can't try it out right now - isn't there a counter somewhere in the $vars variable that contains what page you're on? If so, you can only intercept & change the row when you're on the 1st page