Here's how I do it and I assume Web2py does something similar when it, for
example, resets the "Working" caption on buttons.
The Javascript/Jquery whatever in the client changes the state of the
button. I do it before sending the ajax post. I don't know how Web2py does
it.
It doesn't matter whether it's JQuery's ajax or Web2py's ajax. The syntax
is a little different between the two, but the overall process is the same.
The client sends a request that gets routed to a function. The function
returns a response.
In that response you would include, assuming JQuery has been loaded on the
page, something like
"$('#somentity_on_page').whatever_attribute_needs_changing('new state of
the attribute');
Web2py isn't intercepting anything. You push a button, click a link,
whatever, the browser sends a request. The request goes to your web server,
be it Rocket, Apache, Nginx, any other. The web server sends the request to
Web2py because the server is set up that way. Web2py then processes the
request and returns a response.
Excuse me if I'm interpreting incorrectly, but your questions suggest a
certain misunderstanding about what's going on. Chapters 1, 3 and 4 of the
Web2py manual provide a pretty good overview of how this all works. If I
recall correctly, Wikipedia has some reasonably good articles about http,
http requests and http responses.
On Wednesday, August 13, 2014 6:51:59 PM UTC-4, Michael Beller wrote:
>
> Thanks ...
>
> Niphlod - I'll try to create a minimal app to reproduce.
>
> Cliff - are you suggesting to use the web2py ajax function rather
> the jQuery post?
>
> I'm also trying to understand why web2py is intercepting the event and why
> it doesn't think the response is succesful which I assume is why the button
> is not re-enabled.
>
> On Wednesday, August 13, 2014 5:18:42 PM UTC-4, Cliff Kachinske wrote:
>>
>> get rid of the target in your ajax call and use ':eval' instead.
>>
>> Then reset the button in your response.
>>
>> On Sunday, May 4, 2014 9:33:05 AM UTC-4, John Drake wrote:
>>>
>>> I've created a simple ajax form to update a "post" database. For some
>>> strange reason when I post a new message, the button greys out.
>>>
>>> Here is the model:
>>>
>>> db.define_table('t_post',
>>> Field('f_post', type='text',
>>> label=T('Post')),
>>> auth.signature,
>>> format='%(f_post)s')
>>>
>>> Here are my controller functions.
>>>
>>> def ajax_post():
>>> posts = crud.select(db.t_post, fields=['f_post'], query =
>>> db.t_post.created_by == auth.user,
>>> headers={'t_post.f_post': 'Post'}, orderby =
>>> ~db.t_post.created_on)
>>> search = crud.search(db.t_post)
>>> return dict(posts=posts, search=search)
>>>
>>> def new_post():
>>> postdata = request.vars.post
>>> db.t_post.insert(f_post = postdata)
>>> posts = crud.select(db.t_post, fields=['f_post'], query =
>>> db.t_post.created_by == auth.user,
>>> headers={'t_post.f_post': 'Post'}, orderby =
>>> ~db.t_post.created_on)
>>> return posts
>>>
>>> Here is the model:
>>>
>>> {{extend 'layout.html'}}
>>> <h1>This is the default/ajax_post.html template</h1>
>>> <form onsubmit="return false">
>>> <div>Post : <input name="post"/></div>
>>> <div><button onclick="ajax('new_post', ['post'],'results')">Post
>>> Message</button></div>
>>> </form>
>>> <div id="results">
>>> {{=posts}}
>>> </div>
>>> <div>
>>> {{=search[0]}}
>>> </div>
>>>
>>> At first I used an input field with type "submit" for the submit
>>> button. When that happened, it would
>>> grey out and the value would set to "Working....". At least now button
>>> text doesn't change, but it
>>> it still grey's out. Inspecting the element in Firefox I get:
>>>
>>> <button value="Working..." class="btn disabled"
>>> onclick="ajax('new_post', ['post'],'results')">Post Message</button>
>>>
>>> Why? I didn't ask it to change the button's class to disabled. And it
>>> stays greyed even though
>>> the results have returned and my "results" div has been properly
>>> updated. I can still click on
>>> the button, but it just appears disabled.
>>>
>>
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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