March 2010 - Development - lists.drupal.org

D7 AJAX API change: Submit and Validation
by Randy Fay 31 Mar '10

31 Mar '10

If you're working with D7 AJAX Forms, you will be interested in an API change this week. With http://drupal.org/node/684846, the AJAX triggering was refactored, and this has some effects on those of you using it: The bottom line: The submit function and form_set_error() actions only take place when the entire form is submitted, and do not take place in an AJAX triggered event (unless it's submitting the entire form). 1. Fields don't get errors reported against them in the context of a single-element AJAX event. So for example, if you're triggering on a select and there is another required field in the form, form_set_error() will not report the fact that the other required field is still empty. 2. The _submit() function is *no longer* executed during an AJAX submission, only when the form itself is submitted. It's only run when the whole form is submitted. If you have behavior in your module that depends on this, you'll have to change this. I had some contrib code broken by a recent small interface change in D7, and I think we should probably make announcements to this group when these interface changes happen. I haven't figured out a better way of notifying authors who might be affected. PS: There is some new documentation on AJAX forms at http://drupal.org/node/684846. Your review and suggestions are welcome. -Randy -- Randy Fay Drupal Development, troubleshooting, and debugging randy(a)randyfay.com +1 970.462.7450

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Interacting with Views Tabs via code
by Sam Tresler 29 Mar '10

29 Mar '10

Hello, Not sure if this is the best place, but I've come across an interesting problem and I'm not certain how to proceed. I have a 3 tabbed view (you can actually see the live version here: http://livestrongaction.org/featured_dedications) . I want to add a 4th tab, and thought this would be simply adding a custom module with hook_menu and a MENU_LOCAL_TASK. However, it appears that views is doing something that prevents hook_menu from interacting there. I next thought I would try hook_menu_alter, but I can't see the three tabs being rendered in the &$items array passed into that hook. Now, I could just intercept this at the theme level and add what I needed, but that seems kludgy. I'm tempted to move the entire view into code, but not sure how that would necessarily help this situtation. I may ask on IRC< or the views support queue, but thought this list may be able to give me a few leads. Any idea how to get a menu tab to render on a tabbed view? Hope I'm not missing something obvious. Thanks in advance. -Sam Tresler

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Pre-loading drupal.settings
by Jeff Greenberg 26 Mar '10

26 Mar '10

I have a page with a form provided by a module, and the submit function in the module does a form redirect at the end. The page redirected to has a jsquery page ready function that opens a window based on a drupal.settings value. I also have a php snippet that checks a $_SESSION variable for a value, and if it's present, does the drupal_add_js call to populate the drupal settings value. What I seem unable to do is take the $_SESSION value (set in the submit function of the form) and place the php snippet so that the page that is loaded has that value in place when the page ready function is called. At first, I had the code in the form submit function. That actually caused the window to pop open on the form page. I moved the code to the head of the page template for the page that -should- pop open the window. But it doesn't work...the window is opened on the page loaded AFTER the page that was redirected to. So: [Form page] -> get info -> submit function -> load session var -> redirect to page A [Page A] -> template does drupal_add_js to create drupal.settings value -> page ready -> check settings and open a window with the file name in the settings value That's what I have...where -should- I have the drupal_add_js? Jeff

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Why $form['#post'] is cloned for each element instead of beeing passed by reference ?
by Daniel Caillibaud 25 Mar '10

25 Mar '10

Hi, Is there any reason to a valued affectation of $form['#post'] instead of a reference affectation ? In form.inc, function form_builder, line 892, there is foreach (element_children($form) as $key) { $form[$key]['#post'] = $form['#post']; why not just a $form[$key]['#post'] = &$form['#post']; ? Thx -- Daniel

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Re: [development] Using drupal_access_denied()
by David Hart 24 Mar '10

24 Mar '10

Yeah, it looks like it was too late. I ended up using hook_nodeapi and everything seems to be working fine. > Date: Tue, 23 Mar 2010 22:27:08 +1000 > From: "Lee Rowlands" <leerowlands(a)rowlands-bcs.com> > Subject: Re: [development] Using drupal_access_denied() > To: <development(a)drupal.org> > Message-ID: <000501caca84$290afc00$7b20f400$@com> > Content-Type: text/plain; charset="us-ascii" > > Hi, > By the time you get to preprocess_page it's probably too late for > drupal_access_denied, for the same reasons as drupal_add_js doesn't work in > preprocess_page functions (see > http://www.drupaler.co.uk/blog/joys-preprocessing/70) perhaps you might > need to use hook_menu_alter instead and override the access callback? > Lee > >>If I do: >> >>function mymodule_preprocess_page(&$vars) { >> if ($some_condition) { >> drupal_access_denied(); >> exit; >> } >>} >> >>I just get a white page (which is a 403 page looking at the header, not a > 500). > > >

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Re: [development] order in which regions are rendered
by Ashraf Amayreh 23 Mar '10

23 Mar '10

What I need to do is pretty simple. Doubleclick is an AD service that works by placing javascript snippets at various locations in the page. I do that via blocks. The javascript output contains an optional variable called tile that is used in the doubleclick backend for various things. The tile should be set on ads sequentially. so 1st banner that appears in HTML page should have tile=1, 2nd banner should have tile=2 and so on till the last banner inside the HTML. If there's a better approach to implement this then I'm all open for suggestions :) -- Best Regards, Ashraf Amayreh CEO | O-Minds Cell. 962 78 8099997 Tel. 962 6 5655150 Fax. 962 6 5675150 o-minds.com web development | web design user experience | branding design

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Using drupal_access_denied()
by David T 23 Mar '10

23 Mar '10

Hi, Although I've managed to implement some functionality using Rules, for various reasons I'd like to shift it to some logic and code in my own custom module that prevents access to certain pages. Doing: function mymodule_preprocess_page(&$vars) { if ($some_condition) { print "pass"; } else { print "fail"; } } works fine. If I do: function mymodule_preprocess_page(&$vars) { if ($some_condition) { drupal_access_denied(); exit; } } I just get a white page (which is a 403 page looking at the header, not a 500). What do I need to do instead? Cheers, David

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Re: [development] order in which regions are rendered
by Ashraf Amayreh 22 Mar '10

22 Mar '10

Thanks for the replies. You're right, the regions do render as declared inside the .info file, but knowing that still doesn't solve the issue. For example, some regions are added through preprocess (theme_preprocess_node) which are rendered on node pages before the rest of the regions. Anything inside the node.tpl.php is also rendered before all other regions. So you still can't guarantee that one region is rendered before another. What I need is to generate javascript inside blocks according to their placement on the page. What I tried was placing a static variable inside hook_block on $op = view and incrementing that, but as I showed, this didn't solve the problem because you can't be sure what regions will be rendered in what order. The only way I see it is to somehow modify the fully rendered page HTML before it's sent to the browser using regular expressions. Is there a way to do that? And if doable, how costly in performance would it be? -- Best Regards, Ashraf Amayreh CEO | O-Minds Cell. 962 78 8099997 Tel. 962 6 5655150 Fax. 962 6 5675150 o-minds.com web development | web design user experience | branding design

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CCK Description Field Modul
by Ernst Plüss 19 Mar '10

19 Mar '10

Hi Drupalfriends I'm looking for a way of adding descriptive text to a cck form for non programmers. I though of a CCK field which adds descriptive text to the form, but does not provide any possibility to enter data by the end user. I'm ready to code this module, but want to make sure nothing similar does exist already. Thanks for your feedback. Ernst

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order in which regions are rendered
by Ashraf Amayreh 19 Mar '10

19 Mar '10

Hello all, I would like to ask what order regions are rendered and how I may be able to control this. In my case, they're not rendering in the order defined in the .info file or the order they're printed in page.tpl.php The reason behind this is that I want a certain block that is generated by a certain module to be numbered based on its appearance inside a page. I'm surprised however, that the block rendered in the body gets a #1 and the one in the header gets #2 although the one in the header was printed before the one in the body and although the header region was declared before the body region in the theme .info file. Would be glad if someone could shed the light on this issue. -- Best Regards, Ashraf Amayreh CEO | O-Minds Cell. 962 78 8099997 Tel. 962 6 5655150 Fax. 962 6 5675150 http://www.o-minds.com web development | web design user experience | branding design

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