[Grok-dev] Dependency between classes to be grokked

[Santiago Videla]

Hi,

I'm working on megrok.menu
As far I understand, it hasn't the possibility to use sub-menus, and I would
like to use those.

I was trying to understand how Menu, MenuItems and SubMenuItems are
registered and what I "understood" is that sub-menus must be registered
first, as a MenuBrowser (using menuDirective) and then as a
SubMenuItemBrowser (using subMenuItemDirective)

So what I did was to add the megrok.menu.menuitem directive to the
MenuGrokker (until now, was only available for MenuItemGrokker) and the
execute method for the MenuGrokker is the following

    def execute(self, factory, config, name, title, description, \
                    menuitem=None, context=None, layer=None,
permission=None):

        menuDirective(config, id=name, class_=factory,
                      title=title, description=description)

        # If menuitem directive is used, then we have to register the
        #grokked Menu as a MenuItem for another Menu

        if menuitem:
            menu_id, icon, filter, order = menuitem
            try:
                menu = config.resolve('zope.app.menus.'+menu_id)
            except ConfigurationError, v:
                raise GrokError("The %r menu could not be found.  Please use
"
                                "megrok.menu.Menu to register a menu first."
                                % menu_id, factory)

            subMenuItemDirective(config, menu=menu, for_=context,
submenu=name,
                              title=title, description=description,
icon=icon,
                              filter=filter, permission=permission,
layer=layer,
                              order=order, action='')

        return True


The problem that I found is that

menu = config.resolve('zope.app.menus.'+menu_id)

It's not always resolved. It depends on the class names. The relation that I
found was that Menu classes are grokked in alphabetic order, am I right?

Example:

class Clients(megrok.menu.Menu):
    grok.name('clients_menu')
    grok.title('Clients')
    megrok.menu.menuitem('main_menu')

    def render(self):
        pass

class ClientsItem(grok.View):
    grok.title('Addclient')
    megrok.menu.menuitem('clients_menu')

    def render(self):
        return 'add client view'

class MainMenu(megrok.menu.Menu):
    grok.name('main_menu')
    grok.title('Main menu')
    grok.description('App menu')

this doesn't work, because Clients(megork.menu.Menu) is grokked before
MainMenu

if I change Clients to NClients (N after M) it does work, but I guess that
it's not the solution to this problem...

I already try to make 2 different grokkers with differents priorities (using
martian.priority) but nothing changes

I need some help... please :)

Regards

-- 
Santiago Videla
www.revolucionesweb.com.ar
http://www.linkedin.com/in/svidela

Sigue la mata dando de que hablar siempre abajo y a la izquierda donde el
pensamiento que se hace corazón resplandece con la palabra sencilla y
humilde que l at s tod at s somos.
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