Re: Saving css state in javascript and passing to php via form submit

On 3/30/07, Tim <user@internet46.fr> wrote:

-----Message d'origine----- De : Tijnema ! [mailto:tijnema@gmail.com] Envoyé : vendredi 30 mars 2007 17:06 À : Tim Cc : php-general@lists.php.net Objet : Re: [PHP] Saving css state in javascript and passing to php via form submit On 3/30/07, Tim <user@internet46.fr> wrote:

-----Message d'origine----- De : Tijnema ! [mailto:tijnema@gmail.com] Envoyé :

vendredi 30 mars

2007 16:56 À : Tim Cc : php-general@lists.php.net Objet :

Re: [PHP]

Saving css state in javascript and passing to php via form submit On 3/30/07, Tim <user@internet46.fr> 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.. server-side session data? i never heard of server-side sessions...

AFAIK they are send in the HTTP headers from and to the server. Cookies are nearly the same as sessions, i found this article (with examples) that goes about parsing cookies from javascript. So you could also do it with cookies. http://www.javascriptkit.com/javatutors/cookie2.shtml

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

It's not too hard, but if you already did a lot of work on the form processing, you prefer not to write it all over again i think ;) Tijnema