Maybe execute them in alpha order. Plug-ins should not depend on other plug-ins?
-Thadeus On Sun, Nov 8, 2009 at 1:00 AM, mdipierro <mdipie...@cs.depaul.edu> wrote: > > It seems to me dispatching only affects controllers and the current > mechanism works well for controllers. > > The problem is models. As you say plugin models should be able to say > "execute this before everything else" and "execute that after > everything else". The problem is what happens when two plugins say > "execute this before everything else"? I do not know how to solve this > problem. > > Of course you can have plugins completely defined in module files and > you can import them explicitly in your code where needed. To me this > is a special type of plugin. > > Massimo > > On Nov 7, 8:52 pm, Thadeus Burgess <thade...@thadeusb.com> wrote: > > I have a solution, but you might not like it. > > > > web2py needs a dedicated plugin subsystem. > > > > With a dedicated plugin dispatcher, things like this can be controlled, a > > plug-in can specify a setting PRE_MODEL/POST_MODEL that says "execute > this > > plugin before/after models are executed". > > > > I still don't want plug-ins assuming my database... yes I could edit the > > plug-in, but your whole thing is about having plug-ins that you don't > have > > to edit! But really it comes down to the fact that I am a software > engineer, > > and I like to be in control as much as possible. > > > > -Thadeus > > > > On Sat, Nov 7, 2009 at 7:14 PM, mdipierro <mdipie...@cs.depaul.edu> > wrote: > > > > > the current plugin mechanism has a problem. There is no way to specify > > > what should be executed before the other models and what after the > > > other models. They are executed in alphabetical order as any other > > > model. This problem needs a solution. > > > > > Executing all plugins before models is not a good solution because > > > some plugins may need a model. Moreover some plugin may act on > > > existing models. > > > > > I do not have a solution to this problem. > > > > > Plugins should assume a db (unless they define their own). You may not > > > call it "db" but they should be able to reference it. > > > > > Some plugins may need auth, crud or service (unless they define their > > > own). > > > > > Ideally plugins should expose their own configuration page (accessible > > > only to admin) and should perhaps store configuration settings in a > > > file. > > > > > Massimo > > > > > On Nov 7, 6:11 pm, Thadeus Burgess <thade...@thadeusb.com> wrote: > > > > Love the module Mr Freeze. > > > > > > I have some same questions about how plug-ins would find out about > > > certain > > > > things in your app. > > > > > > Say I want to write a plugin_ratingsystem.py, how would I pass > settings > > > > along to the plug-in from my db.py? Since plug-in models get executed > > > after > > > > db.py. > > > > > > What about making it so any model plugin_<name>.py get executed first > by > > > > web2py, in alphabetical order of name. This way plug-ins can define > > > classes > > > > and be explicitly called for execution. > > > > > > I agree with Mr. Freeze. plug-ins should not assume db, auth, crud, > > > etc... > > > > etc... Perhaps plug-ins that use database should need to be > explicitly > > > > called > > > > > > plugin_comments.init(db=mydb, othersetting="hi") > > > > > > -Thadeus > > > > > > On Sat, Nov 7, 2009 at 4:59 PM, mr.freeze <nat...@freezable.com> > wrote: > > > > > > > > I think plugins should assume db, auth, crud, mail, service. > > > > > > Don't you do the same with your code? A plugin is nothing more > than a > > > > > > means to package and distribute your code. > > > > > > > I don't think code should ever assume anything. I used the > instances > > > > > since they are in the same model. If I were to make a module out > of > > > > > this it would take the instances as arguments. > > > > > > > > I think the plugin should assume db. I do not see a problem with > > > > > > people editing the plugin anyway. > > > > > > That could be a way to customize it. > > > > > > > Won't this make upgrading plugins a pain? You would have to go back > > > > > through and edit every plugin that you modified before upgrade. > > > > > > > I'll probably just make a module since it will be more reusable. > > > > > Thanks for checking it out. > > > > > > > On Nov 7, 4:47 pm, mdipierro <mdipie...@cs.depaul.edu> wrote: > > > > > > On Nov 7, 4:06 pm, "mr.freeze" <nat...@freezable.com> wrote: > > > > > > > > > Hmmm...Interesting proposition. A couple of questions first: > > > > > > > > > 1) How will the plugin know what the instances of > Auth,Crud,Mail > > > and > > > > > > > DAL are named? Are auth,crud,mail and db pretty much reserved > words > > > > > > > now? > > > > > > > > I think plugins should assume db, auth, crud, mail, service. > > > > > > Don't you do the same with your code? A plugin is nothing more > than a > > > > > > means to package and distribute your code. > > > > > > > > > 2) How would I let the user decide which db to put the tables > in if > > > > > > > they have multiple? Do they have to edit the plugin? > > > > > > > > I think the plugin should assume db. I do not see a problem with > > > > > > people editing the plugin anyway. > > > > > > That could be a way to customize it. > > > > > > > > I do not exclude a more specialized plugin that assume more > and/or > > > > > > something different. > > > > > > > > > On Nov 7, 3:57 pm, mdipierro <mdipie...@cs.depaul.edu> wrote: > > > > > > > > > > I think this is nice. > > > > > > > > > > If you now call that files models/plugin_settings.py and if > all > > > > > tables > > > > > > > > have a prefix plugin_settings_* > > > > > > > > > > then you can distribute it as a web2py.plugin.settings.py > > > > > > > > > > Massimo > > > > > > > > > > On Nov 7, 3:22 pm, "mr.freeze" <nat...@freezable.com> wrote: > > > > > > > > > > > I put this together to let non-developer admins manage > settings > > > > > > > > > through appadmin. It basically puts all settings that are > > > string, > > > > > > > > > int, double or boolean in the database. I would like > feedback > > > on > > > > > the > > > > > > > > > perils/merits of doing this. > > > > > > > > > > >http://www.web2pyslices.com/main/slices/take_slice/26 > > > > > > > > > > > Thanks! > > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "web2py-users" group. To post to this group, send email to web2py@googlegroups.com To unsubscribe from this group, send email to web2py+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/web2py?hl=en -~----------~----~----~----~------~----~------~--~---
