There has been a lot of discussion in the past about forms that submit
via ajax and may or may not refresh the entire page. It is also useful
to be able to break html pages into "modules" or "plugins" or
"components" each with its own model, view, controller in such a way
that they communicate both serversize (by sharing session and
database) and clientsize (one boxed component should be able for
example to refresh the entire page or trigger a flash).
I have prototype application that does this.
http://www.web2py.com/examples/static/web2py.app.events.tar
It uses jquery publisher subscriber mechanism. All the code is in a
new web2py_ajax and a class call jDiv (similar to Rails Partial but
more powerful in my opinion) which I could include in html.py
It allows you to write code like this:
def index():
return dict(partial1=jDiv('click me for text','mycallback1'),
partial2=jDiv('click me for flash','mycallback2'),
partial3=jDiv('click me to redirect','mycallback3'),
partial4=jDiv('click me for form','mycallback4'))
def mycallback1():
return 'hello world'
def mycallback2():
return jDiv.flash('this is a test') # flash on the container page
def mycallback3():
return jDiv.redirect('http://www.yahoo.com') # redirects entire
page
def mycallback4():
form=FORM('your name:',
INPUT(_name='name',requires=IS_NOT_EMPTY()),
INPUT(_type='submit'))
if form.accepts(request.vars):
return jDiv.flash('hello '+form.vars.name)
return form
Can you figure out what it does?
Not that the page is never reloaded. Only parts (partials, jDivs) of
the reloaded. Each jDiv lives in its own container, has one action,
can have a view, and can talk to each other.
This may require some more thought.
Comments?
Massimo
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