Just to let you all know, I've put up a tutorial explaining it a bit more here:
http://digitalspaghetti.me.uk/2007/11/02/developing-a-persistent-javascript-variable-with-cakephp-12-jquery/
Please feel free to comment as it probably could be improved upon.
On 02/11/2007, 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
>
--
Tane Piper
Blog - http://digitalspaghetti.me.uk
AJAX Pastebin - http://pastemonkey.org
This email is: [ ] blogable [ x ] ask first [ ] private
