RE: [PHP] Saving css state in javascript and passing to php via form submit



-----Message d'origine-----
De : Tijnema ! [mailto:tijnema@xxxxxxxxx]
Envoyé : vendredi 30 mars 2007 17:06
À : Tim
Cc : php-general@xxxxxxxxxxxxx
Objet : Re: [PHP] Saving css state in javascript and passing
to php via form submit

On 3/30/07, Tim <user@xxxxxxxxxxxxx> wrote:


-----Message d'origine-----
De : Tijnema ! [mailto:tijnema@xxxxxxxxx] Envoyé :
vendredi 30 mars
2007 16:56 À : Tim Cc : php-general@xxxxxxxxxxxxx Objet :
Re: [PHP]
Saving css state in javascript and passing to php via form submit

On 3/30/07, Tim <user@xxxxxxxxxxxxx> wrote:
Hello all,

I have a little dilemna here:

I am using php/css/mysql to generate a hierarchical table of
categories and sub-categories and sub-sub.. Etc..

A screenshot can be found here:

http://www.internet46.fr/mehim/screenshot.jpg

Now i'm also using javascript to hide show blocks of divs
to hide/show
sub categories.. Typical..

My issue is on page reload, i have a form on the same
page, when a
category is clicked, the categorie info displays and you can
update the info through this form (table and form on
same page).
My issue comes when i post the data, the page comes back and my
category tree
folds up which is normal because all divs are set to
"display:none;".

I have managed to pass a post/get called lastclicked
that gets the
nodepath of that element and combined with php to generate
javascript
that will unfold the tree and highlight the last
clicked element...

I would like to go one step further and save the entire
state of the
tree, say several parent categories are unfolded and i click a
subcategorie to display my form, i want that entire "state" un
unfolded categories to be displayed not just the clicked
category, of
course i can get this state and save it in a javascript
array, but my
issue is when i post my form how do i pass that state data
generated
by javascript back to the page, to be able to unfold the
tree in the state it was previously?

What are the technologies IF there are any and what should
i look up
to find docs that cover this type of datatransfer ie:
javascript->php.

Regards,

Tim

I think you want to use sessions for this :)

Ok, i can put the data in the session variable, but i can
only get the
"current" state through javascript

ie:onsubmit="getstate()"; which would get the id's of the
blocks that
are set to display:block;

But in getstate() how do i pass that to php to set that
session variable?

You could use AJAX to get things from/to PHP, but why should
you? You can use session within javascript too i believe.

Hmm javascript setting server-side session data??
Sounds weird, but i'll look into it..

Tijnema

ps. Maybe you could also use AJAX instead of submitting forms the
whole time.

In the next version of my framework i would like to, i still havent
quite understood the whole concept, not enough research
yet, but yes
i'll be doing that next ;) (you know deadlines, can't sit
and read docs all day etc..
Although i'd rather!)

;)

Regards,

Tim

Really, it's not that hard to use AJAX. You might want to
look at www.tizag.com, there it is really easy explained.
It's nothing more then making new request to scripts inside
javascript.
Nice tutorial thanks for that, i'll look it up, maybe intergrate it right
away, would really make my day if i could :))

Regards,

Tim
.

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