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AJAX
by Chris Miller 30 Oct '13

30 Oct '13

Hi Folks, I have a view that displays a bunch of links to content. I want these links to load the content via AJAX. The instructions for my use case, which is not Drupal Forms, are sparse. Even so, I think I've followed them completely, and things are working as well as can be expected. So far, so good. I click a link and I see the spinner... but then nothing. And I know why, but I don't know how to correct it. The server returns a json string to the browser, and the browser simply does what that string implies, which is to muck with the DOM because, of course, that's what AJAX does. In my case I am returning the trivial "Hello World." string: $s = '<H1><B><U><I>Hello World.</I></U></B></H1>'; $ajax_commands = array(); $ajax_commands[] = ajax_command_after( NULL , $s); return drupal_json_output($ajax_commands); ...but notice that the jQuery selector is NULL . My reading of the instructions is that the target of the ajax_command will be relative to the DOM node that was clicked, but my experience is that nothing is being selected and consequently nothing it happening. I have verified that everything is otherwise correct. If I use ".use-ajax" as the selector, then EVERY link in the view is effected, so clearly the jQuery selector is the problem. I tried the obvious "this" (without quotes, because it is not a string in this context), which didn't work. Does anybody know how to address the clicked element of the DOM? Thanks for the help, Chris.

1 0

render()
by Chris Miller 30 Oct '13

30 Oct '13

Hi Folks, I have a node expressed as an associate array: "$node = node_load($nid);" I have some mysteries: First, "print_r($node)" produces the same output as "print_r(render($node))", and I think the reason is that I need to add properties to the $node array to tell render() what I want done. Are my suspicions correct? Second, I seek to display $node as HTML. How do I do this? Chris.

2 2

(no subject)
by Chris Miller 29 Oct '13

29 Oct '13

Hi Folks, I defined a call to hook_menu and I created a path "modc/ajax/%node" (see below) with the attendant callback, "modc_ajax_node($node)". I am requesting the menu entry from a view by rewriting a title field as a link: "modc/ajax/[nid]". So far, so good. All the plumbing works, for the most part. First mystery: In my callback function, modc_ajax_node($node), I expected $node to be an integer because I think I told the view to use that replacement pattern, [nid], however var_dump($node) reveals it to be a fully developed structure that, with my level of experience, I can't distinguish from the internal representation of a node, and in fact it appears to be the correct node, guessing by what I see in the fields. Second mystery: O.K., so let's suppose that I have an internally represented node, and I want to display it. Shouldn't: return render($node): produce a display of the page? ... because it doesn't. So, I expect I am calling the wrong thing. Can anybody tell me how I convert the internal representation of a node to the printable HTML that I need? P.S.: If my modc_ajax_node($node) callback executes: return "<P>Hi!</P>"; then I see a fully rendered page showing the title, 'Module C AJAX node callback', with content "Hi!", just as expected. Chris. ...created a path to "modc/ajax/%node": $items['modc/ajax/%node'] = array ( 'title' => 'Module C AJAX node callback', 'page callback' => 'modc_ajax_node', 'page arguments' => array(2), 'access arguments' => array('access content'), 'type' => MENU_CALLBACK, );

1 0

advanced poll problems
by James Rome 25 Oct '13

25 Oct '13

I tried to use the advanced poll module to make more flexible polls. The problem is that as soon as the first person votes, everyone else sees the vote tally with no check boxes, so they cannot vote. What could be causing this?" Thanks, Jim

1 0

Switching domains but keeping the rest...
by Afan 25 Oct '13

25 Oct '13

Hi to all I have developed a website based on Drupal 7, let's call it domain1.com. The owner of the website bought domain2.com and wants to change domains but to keep everything else. Themes and modules, content... Everything. What would be the easiest way? Thanks for any help

8 10

AJAX
by Chris Miller 24 Oct '13

24 Oct '13

Hi Folks, I have discovered why I am getting multiple events -- increasingly multiple events. In the following code, the "attach" method is called for each click and notice that this has the effect of attaching a new event handler for each event handler already attached. And here's the mystery: My code differs by ONLY identifiers from the example I followed ( http://interactivejunky.com/tutorial-demos/ij-ajax-commands/trigger-page ) and the example works correctly which leaves unexplained why I have to add an unbind() call to avoid the multiple attach problem. I considered that it might be the version of jQuery, but I see the same problem with both 1.7 and 1.8, so at least as far as jQuery_update is concerned, it is not a jQuery issue. I don't know if it is a "behaviors" issue, because I still don't fully understand how "behaviors" works. Anybody have any insight into this question? (Attached is the complete (trivial) module for experimentation, should that be interesting.) (function ($) { Drupal.behaviors.modc = { attach: function(context, settings) { var $AJAXEnabled = $('#ajax-enabled'); $AJAXEnabled.unbind(); new Drupal.ajax('#ajax-enabled', $AJAXEnabled, { url: $AJAXEnabled.attr('href'), settings: {}, event: 'click tap' }); } } })(jQuery); Chris.

1 0

page with multiple nodes configurable by unreg user
by Bert Van Kets 24 Oct '13

24 Oct '13

Hi all, In my D7 site I have a list of nodes of a specific content type. I use the XPath Feeds module to create these nodes from an XML document. I know I can create a view to display those nodes, but I need to update the nodes using AJAX and I'd love to allow the visitor to move nodes to the top so the nodes he/she is most interested in stay visible easily. The rest has to be displayed using the sort order defined in the view. What is the best way to use AJAX to update the nodes content in a view? How can I give the visitor (unregistered user) the ability to move nodes to the top? Thanks for any help. Bert

3 6

Panels in Drupal 7 not displaying content, blocks, etc
by Roger 24 Oct '13

24 Oct '13

Panels in Drupal 7 not displaying content, blocks, I think I have solved the dilemma and found some interesting theme info. Content created in blocks must be formatted in [Full HTML] If in filtered or plain text, content will not display in any panel. Do not know why, yet! Maybe someone can explain this! Will work next with content in views content panes next. Blocks are not 'enabled' in [Structure] [Blocks] of the theme - content, header, footer or any active region, but should remain disabled. Panels will see them. Do not disable Drupal blocks in Panels. I am using a basic zen starterkit theme with 2 Regions: regions[page_top] = Page top regions[page_bottom] = Page bottom screenshot = screenshot.png name = NEWS (Zen Sub-theme Starter Kit) description = Basic zen starter kit with no extras. core = 7.x base theme = zen stylesheets[all][] = css/styles.css features[] = main_menu features[] = secondary_menu Panels seems to do the theme hard lifting. If you create a [Structure] [Panels] [Panel page] or [Landing page] and give it a url, that url will override the name of the directory. So you can effectively have a number of landing pages and grant different user access to each individually. Example: I have a drupal install named /sandbox. My panels landing page is /news. localhost/news brings up the general landing page. Previously I had localhost/sandbox/news. localhost/nsw brings up the nsw landing page. Have not experimented with panels CSS yet. With panels there seems no point in creating separate site pages, panels does this. Johan Falk of NodeOne described using panels to display articles and other data on any page created in panels. Hope this helps those who cannot get panels to display content. Roger

1 0

AJAX
by Chris Miller 23 Oct '13

23 Oct '13

Hi Folks, I have a tiny AJAX example and it works -- in fact it works too well. On the first click, it does what it is supposed to do -- insert a DOM node with text after the <A> node with id=ajax-enabled.. On the second click is does it TWICE and I can see two throbbers run. On the third click, you guessed it, FOUR throbbers. Is there some context that I need to clear after the AJAX call or some object I need to re-use to prevent this? Also, as I investigate the DOM with the browser inspector, I can't find where all the event handlers are attached. When I look in the naive places, I see references to jQuery, but I believe that jQuery is dispatching to something somewhere and I'd like to know where that somewhere is. I should be able to find it. Thanks for the help, Chris.

2 1

AJAX
by Chris Miller 23 Oct '13

23 Oct '13

Hi Folks, This is a biggie... I have a view which produces a page of links to content. When the user clicks the link, I want to display an unadorned, overlaying, modal <DIV> of the target. Imagine, for example, that the view produces a list of drawings, then I want to display the selected drawing without any real estate consumed by Drupal navigation or block regions. I know this is a job for AJAX, and I need someone to just fill in a gap or two. Here's what I think I know: In response to the user's click on the link, through the magic of 'class="use-ajax" ', Drupal will make an AJAX call for the requested content, wait on the promise, and finally return JSON encoded content to some function that I provide so that I can display the returned content in a <DIV> constructed specially for the circumstance. I see the example, but I can't quite follow it. More specifically, how does 'class="use-ajax" ' do this magic? I have to assume there is an onClick event handler hiding somewhere above me in the DOM looking for the class "use-ajax". Where is this event listener attached? How does it become attached? Where is the source, so I can see both the event handler and the attachment? Finally, how do I register my callback function which will operate on the returned JSON, which is a complicated question because I need an example of what I need to write, where I need to put it, and how I tell Drupal that it is there. Thanks for the help, Chris.

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