[albatross-users] States... how to go around...

[skytteren at netcom.no]

Hi!!!

I got a problem with "going around" mye albatross webpage.

The problem i quite simple:
I go into one page, does something and are sent to another page...
Of course, I did something wrong and wants to go back with my "Back" 
button in my browser. It looks like I go back, but the server gives me 
all the functinality of the second page (it looks like I'm still in the 
second page, but se the first page)... What do i need to do to get this 
working proparly...

I use :
class AppContext(SessionAppContext):

    def __init__(self, app):
        SessionAppContext.__init__(self, app)


and py_mod's!

There's also another problem:

How do i know what Node class I've "clicked" in a al-tree???
Here is som of the code that I find relevant:


def page_enter(ctx):
    ctx.locals.debug = ""
    ctx.add_session_vars('debug')
    if ctx.locals.debug == "":
		e = Exercise()
		ctx.locals.exercise = e
		ctx.add_session_vars('exercise') 

def page_process(ctx):
    if ctx.req_equals('cancel'):
        ctx.locals.creating_exercise = False
        ctx.set_page('main')
    elif ctx.req_equals('create_problem'):
        ctx.locals.exercise_problemset = get_problemset
(ctx.locals.exercise, ctx.locals.create_problem, ctx)
        if ctx.locals.exercise_problemset != None:
	        ctx.locals.problemstate='exercise'
	        ctx.add_session_vars('problemstate')
	        ctx.add_session_vars('exercise_problemset')
	        ctx.set_page('problem_creation')
    elif ctx.req_equals('insert_problem'):
        ctx.locals.exercise_problemset = get_problemset
(ctx.locals.exercise, ctx.locals.insert_problem, ctx)
        if ctx.locals.exercise_problemset != None:
	        ctx.locals.creating_exercise = True
	        ctx.add_session_vars('exercise_problemset')
	        ctx.add_session_vars('creating_exercise')
	        ctx.set_page('problems')
    elif ctx.req_equals('remove_problem'):
        pass
    #elif ctx.req_equals('edit'):
    elif ctx.req_equals('insert_composite_problem'):
        ctx.locals.exercise_problemset = get_problemset
(ctx.locals.exercise, ctx.locals.insert_composite_problem, ctx)
        if ctx.locals.exercise_problemset != None:
            ps = ProblemSet()
            ctx.locals.exercise_problemset.children.append(ps)
    
    
def get_problemset(problemset, problemsetid, ctx):
    ctx.locals.debug += "Problemset: " + str(problemset)
    ctx.locals.debug += "ProblemsetID: " + problemsetid
    if str(problemset) == problemsetid and problemset.type != 'p':
        return problemset
    elif problemset.type != 'p':
        for ps in problemset.children:
            potensiell = get_problemset(ps, problemsetid, ctx)
            if potensiell is not None:
                return potensiell
            else:
                return None

<al-tree iter="node" expr="exercise" >
....
<al-a expr="'create_problem=%s' % node.value()">Create problem</al-
a>&nbsp
<al-a expr="'insert_problem=%s' % node.value()">Insert problem</al-
a>&nbsp
<al-a expr="'insert_composite_problem=%s' % node.value()">Insert 
composite problem</al-a>
....
</al-tree>



If there are anyone that know how to solv these problems or now where I 
can look please help me.. :)

Stein K. Skytteren
Trondheim, Norway