You can do all of this with requestHandler component ( to check if an action is 'requested' by another view or element, router::parseExtensions ( to manage automatic template switching for requests mapped with a ".js" file extension ); view::requestAction ( to actually request the json ) and the javascript helper ( check out the inline parameter on the $javascript->link function and the json encoding and json decoding function also )
I generally set up the router to handle .xml and .js requests. To use much of ext you need to return json a lot. I then map the js layouts and /js view subfolders to certain actions. In those actions I use requestAction to grab the data I want from whatever controller - there is an excellent bakery article by gwoo on reusable elements. read that if you havent. - http://bakery.cakephp.org/articles/view/creating-reusable-elements-with-requestaction - You can request the action complete with its mapped extension following any parameters you might have even. IE /users/profile/1.js If I need the js for certain objects ALL THE TIME I set an element up that uses requestAction if no data is passed to it or my passed data instead to request the JSON I need. I might even be inclined to put these reusable parameterized json elements in their own elements/json/controller_name/action_name folders. Using the $plugin variable in the various cache functions ( this is usually blank - resulting in double underscore cache filenames ) you can even cache the results of each requestAction with more granularity ( a few more bakery reads - http://bakery.cakephp.org/articles/view/optimizing-your-cakephp-elements-and-views-with-caching - and - http://bakery.cakephp.org/articles/view/cache-elements-individually-for-each-user ) There is a ton you can do with requestAction and the router alone. Let me know if you have questions or need samples on implementation. [EMAIL PROTECTED] wrote: > > > Hey Tane - check out cake's JavascriptHelper::object() > > On Nov 1, 6:00 pm, "Tane Piper" <[EMAIL PROTECTED]> > wrote: >> Well, what would you know! Having written out what I wanted to get, >> and by simply applying a little brainpower, I came up with the >> solution. What I did was write a CakePHP component and helper. First >> off, here is the component: >> >> <?php >> class JsonComponent extends Component { >> var $json_for_layout = array(); >> function addToJSON($add = array()){ >> $this->json_for_layout = >> array_merge($this->json_for_layout, $add); >> } >> function getJSON() { >> return $this->json_for_layout; >> }} >> >> ?> >> >> What this component does is allows me to pass in arrays to a global >> array in the controller, json_for_layout. Every time I call this from >> a controller, it add's to the array. The next step is in my >> beforeRender() function in my AppController, I do this: >> >> $this->set('json_for_layout', $this->Json->getJSON()); >> >> This sets my view variable. I then need to actually generate the JSON >> and output it to a var: >> >> <?php >> class JsonHelper extends JavascriptHelper { >> function renderJSON($data, $varname = 'Pastemonkey'){ >> $json = json_encode($data); >> $output = $this->codeBlock('var ' . $varname . ' = ' . >> $json . ';'); >> return $output; >> }} >> >> ?> >> >> Now, what I do is inside my header, I echo this out to the view: >> >> <?php e($json->renderJSON($json_for_layout));?> >> >> And thats it! Check your DOM tab in firebug to see the global object >> now available. >> >> For example, if I pass in my sitename, I can simply call it with: >> >> Pastemonkey.sitename >> >> Hope this helps out a few people, and I intend to write a more >> thorough blog about it tomorrow. >> >> On 01/11/2007, Tane Piper <[EMAIL PROTECTED]> wrote: >> >> >> >> > Apologies for the cross posting here, but I myself am at a bit of a >> > crossroads in my applications development, and I'd like to take the >> > time to put out this email in the hopes that it generates some good >> > discussion, and can maybe teach me a few things. >> >> > A little background first to my issues. I am developing my >> > application at the moment (pastemonkey.org) and it's being built on >> > CakePHP and jQuery. At the moment, I'm using a lot of CakePHP's built >> > in stuff to generate my HTML, and I'm using jQuery to do some simple >> > Ajax stuff and some DOM manipulation. >> >> > Where I am at a crossroads is how to do my client/server interaction >> > with JSON. For example, I have the facility in place for inline >> > comments. When you see a paste, you can double click on each line to >> > create and view the comments. When you create one, there is code that >> > generates the comment and enters the line number and paste ID. >> >> > To display this, what I do is create an array of the line numbers, and >> > generate JSON using PHP's inbuilt functions. So an array like this >> > ('1', '2', '10', '15') becomes ["1", "2", "10", "15"]. What I then do >> > is pass this to the view, and do this: >> >> > <?php e($javascript->codeBlock('var lines = eval(' . $comment_lines . >> ')'));?> >> >> > So what this does is it outputs >> >> > var lines = eval( ["1", "2", "10", "15"]); >> >> > I then have this function in my core javascript file: >> >> > $('.geshi-output-view ol li').each(function(i){ >> > i++; >> > $(this).attr('id', i); >> > if ($.inArray(i, lines) != -1) { >> > $(this).attr('style','').addClass('hasComment'); >> > } >> > }); >> >> > What I am doing here is expecting there to already be a variable set >> > called lines, and I check each line's ID (based on offset + 1) to see >> > if it's in the JSON array, and if it does apply the class. >> >> > It presents two issues - first it's ugly. It means I always have to >> > have the javascript helper line above in any view I want to use it in, >> > and I also expect the variable to be there (in the case of the view it >> > always should be). I'm wondering if anyone know a much nicer, more >> > global way to handle this? >> >> > For example, Is there any way in PHP to generate a global object? For >> > example a Pastemonkey object that I can attach to. e.g: >> >> > Pastemonkey.Settings.sitename >> > Pastemonkey.Comments[0] >> > Pastemonkey.User.Colour.Header >> > etc >> >> > I'm basically looking for the cleanest way to handle persistent data >> > from my server side that I can use client side with jQuery. >> >> > Thanks >> >> > -- >> > Tane Piper >> > Blog -http://digitalspaghetti.me.uk >> > AJAX Pastebin -http://pastemonkey.org >> >> > This email is: [ ] blogable [ x ] ask first [ ] private >> >> -- >> Tane Piper >> Blog -http://digitalspaghetti.me.uk >> AJAX Pastebin -http://pastemonkey.org >> >> This email is: [ ] blogable [ x ] ask first [ ] private > > > -- View this message in context: http://www.nabble.com/How-do-you-do-Client-Server-interaction--%28CakePHP-JSON-jQuery%29-tf4734428s27240.html#a13557354 Sent from the jQuery General Discussion mailing list archive at Nabble.com.
