By aryanto on

Hello everybody,

I would like to achieve the following

function my_module_main() {

   // set variable page_is_teaser based on the $teaser variable of the node

   If (page_is_teaser) {
     // Do this
   } else {
     // Do that
   }
}

I have been searching for information for 4 days with no luck. Most of the information I found seem to suggest to use hook_nodeapi to grab the $teaser variable. But I can not figure out how to use it.

As you can guess, I am quite new to this. So could anybody give me some hints?

⋅ Categories: Drupal 6.x

Comments

kenuck’s picture

kenuck commented

Here's an example of using hook_view() : http://api.drupal.org/api/function/hook_view/6

function my_module_view($node, $teaser = FALSE, $page = FALSE, $block = FALSE){

    if (!$teaser){
      // not teaser
    }else{
      // teaser view
    }
    $output =  node_prepare($node,$teaser);
    return $output;
}

hope this points you in the right direction.
cheers

-----------------------------------------
http://www.netrift.com - Custom modules
http://ulisting.netriftsolutions.com - Drupal Real Estate Module for Drupal 6
http://drupal.org/project/friend - Social Neworking for Drupal 6

aryanto’s picture

aryanto commented

Thanks Ken,

But that does not set the $page_is_teaser boolean variable in my_module_main().

I seemed to find the back door by using the $GLOBALS variable, but I have not tried. I heard setting the variable like that is not an elegant solution.

I think I have to change my example above to avoid confusion. I hope the example below is more clear.

//
// set variable $page_is_teaser based on the $teaser variable of the node, probably using nodeapi
//

function my_module_main() {

   If ($page_is_teaser) {
     // Do this
   } else {
     // Do that
   }
}

Cheers,

Anto

kenuck’s picture

kenuck commented

This is a bit confusing ... the teaser var will depend on what you're trying to do and when.

You function above won't work because your $pag_is_teaser is in the wrong scope. You'll need to pass it into the function .

function my_module_main($page_is_teaser){
// or use the global $page_is_teaser within the function

 ....

?>
-----------------------------------------
http://www.netrift.com - Custom modules
http://ulisting.netriftsolutions.com - Drupal Real Estate Module for Drupal 6
http://drupal.org/project/friend - Social Neworking for Drupal 6

aryanto’s picture

aryanto commented

OK. I probably wrongly explain this. So let me tell you what I actually would like to achieve.

I would like to resize an image based on whether the node is a teaser or body node. As I can not directly use the $teaser variable like in page.tpl.php, I thought I have to grab that first and store it in another variable within my module, which in this case is $page_is_teaser. Then use that $page_is_teaser variable to switch the image size.

kenuck’s picture

kenuck commented

HI ,

You should probably use the hook_view() which I gave an example of. That hook will be called everytime a node is view.
http://api.drupal.org/api/function/hook_view/6

cheers

-----------------------------------------
http://www.netrift.com - Custom modules
http://ulisting.netriftsolutions.com - Drupal Real Estate Module for Drupal 6
http://drupal.org/project/friend - Social Neworking for Drupal 6

aryanto’s picture

aryanto commented

I am still quite new in the development of module, but I don't think using hook_view would work. According to the link you gave us, hook_view should set the $teaser variable. So we can not use $teaser variable for process selection inside hook_view.

After trying out a lot of things, I think I can not actually even use the $teaser variable for process selection at all. As what I want to achieve is modifying a string just before it is being passed into the hook_filter (I think). So it will be too late if I modified the string after the $teaser variable being set. I am not entirely sure about this as I still don't know the process flow in Drupal. If somebody could point me a documentation about process flow in Drupal, I would really appreciate that.

It seems to work when I modify the string which is inside $node->teaser at hook_noapi with 'op'='load', but it screws up other thing. I guess that is not a good way to do alteration. So I guess I can not modify that string.

I think my option now is to modify the parameters on img tag at 'op'='alter' or 'op'='view' of hook_nodeapi. Lets see how it goes.

aryanto’s picture

aryanto commented

I just would like to let you know that I have actually managed to solve this issue using hook_nodeapi with op=alter. It took me quite a while to understand how hook_nodeapi works. Even it needs longer codes, I think it is the safest solution as it does not break some other parts.

For those who are interested to see the result, you can have a look here. And if you would like to know the story of building my website, you can read that here.