My use case is: users are invited to events - and each event is
scheduled to 'perform' a number of times. This gives me the tables:
users, scheduled_events, event_users.
I have set up associations on the models like this:
- events has_many scheduled_events
- scheduled_events belongs_to event
- event_users belongs_to event and belongs_to user
Then I've tried to set up an association providing me with the scheduled
events to an invited user like this
- event_users has_many scheduled_events through event
But after googling about for the better part of a day and reading Josh
Susser extensively, I am lead to believe that has_many through only
works on has_many associations - ie. I'm not at liberty to go through a
belongs_to association.
Does anyone here have a take on how to solve this? Or am I perhaps just
messing this association thing up?
best regards,
Walt
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This should work fine in Edge. Did you try to upgrade to edge ?
--
Cheers!
- Pratik
http://m.onkey.org
I'm overwhelmed - did not even dare to hope for any replies - and
certainly not this fast!
I am adding to a production site on 2.0.2 - and I have not been able to
find any good docs on how to upgrade to edge on my mac and still have my
2.0.2 development environment intact (it is _very_ important to me that
my existing 2.0.2 does work and will let me deploy to 2.0.2 production
sites)
Is that possible? Upgrading on my development mac - and still deploy to
2.0.2 production? And perhaps even - downgrading again - should the
upgrade turn out to hold to many TODOS?
thank you Pratik - I've come around your name on a great many posts,
tickets etc and I'm amased at the amount of work you put into this
community!
thank you again,
walt
Pratik,
I'll try the "freeze rails"-thing and see if that will do the trick :)
'shoot - I'll better stay of the freezing path - what started out as a
small Just-Let-Me-Fix-That-Association-For-You turned into a
I-Cannot-Start-My-Project-Due-To-Missing-Methods-On-Core :(
So, I froze - and the project likewize <:)
First missing method is render_file - and I'm afraid that once I get
that 'son of gun nailed', edge has a queue of missing things built up
for me!
Too bad though - I really could have used that hmt belongs_to ...
I cloned the rails.git off of github into its own folder, then symlinked
it into vendor/rails on my project.
Then I did script/server --debugger as usual - and it chokes with:
../vendor/rails/activesupport/lib/active_support/core_ext/module/aliasing.rb:33:in
`alias_method': undefined method `render_file' for class
`ActionView::Base' (NameError)
Chalked this one up on me not keeping tabs on inherit_views plugin which
orignally manhandled the render_file method - upgrading that plugin had
me move on...
- to the next problem: mislav_will_paginate (which he will not in edge
due to:
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:319:in
`activate':Gem::Exception: can't activate activesupport (>= 1.4.4),
already activated activesupport-2.2.0]
but that's not a problem - I commented these two dirty rotten
scoundrels:
gem 'mislav-will_paginate', '~> 2.2'
require 'will_paginate'
and off to the races, I was - in my script/console - eager to see the
promised land of has_many through a belongs_to.
Only to see this:
undefined method `quoted_table_name' for false:FalseClass
from
.../vendor/rails/activerecord/lib/active_record/associations/has_many_through_association.rb:123:in
`construct_conditions'
Before all this turns sour - I'm going to dump this branch - and hurry
back in the comforting shadows of 2.0.2 with my original plugins intact.
The has_many on a belongs_to?
I did the utmost unDRYness I could come u with:
on my user I did
- has_many :event_users
- has_many :invitations, :through => :event_users, :source => :event
and then on my events_controller - I stabbed this into the find_resource
enclosing_resource.invitations.collect { |i|
i.scheduled_events.month_year(fd,ld) }.flatten
case closed (for me - but I still shiver from the tour de force into the
freeze)!
@Roman : If you could mention the exact issues, I could fix
has_many_polymorphs plugin. Or if you can submit a patch, that works
the best!
--
@Pratik - no problem :)
I will have to feel my way into this edge business (and not bag a bundle
of plugins along on the ride) :D
But thank you even so for caring and your time!
@Martin Gamsjaeger
Thank you too! I have put your hmp top of my "clone-list" for when I
dare threading into deep freeze edge waters next time :D
best regards,
walt
Nicholas
ed wrote:
> @edvin: Tag-related:
> http://github.com/tejo/has_many_polymorphs/commit/a3710a131e0bcfc1d1939f28246f4e9f60732835
>
> I'm porting a 1.2.6 app to 2.2.0 and found that using Martin
> Gamsjaeger's fork fixed most HMP issues though I still get the method
> error for 'macro' as you do. Can't quite figure it out. Anyone else
> get it? I'm not seeing any forks on Github dealing with the error.
>
> Ed
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NoMethodError (undefined method `quoted_table_name' for
false:FalseClass):
/vendor/rails/activerecord/lib/active_record/associations/has_many_through_association.rb:123:in
`construct_conditions'
/vendor/rails/activerecord/lib/active_record/associations/has_many_through_association.rb:191:in
`construct_sql'
/vendor/rails/activerecord/lib/active_record/associations/association_collection.rb:21:in
`initialize'
/vendor/rails/activerecord/lib/active_record/associations/has_many_through_association.rb:6:in
`initialize'
/vendor/rails/activerecord/lib/active_record/associations.rb:1297:in
`new'
/vendor/rails/activerecord/lib/active_record/associations.rb:1297:in
`groups'
Any ideas?
Thx
Nick
Martin Gamsjaeger wrote:
> Hey,
>
> Sorry I didn't get back to that thread for so long! I must have
> overlooked it ... maybe because my fix is still working for me (using
> rails-2.2.2, but using mostly my own additional methods). That said,
> I'm not really sure how to reproduce the error you guys get. Maybe
> it's a good idea to put a sample app that triggers the error up on
> github? I could have a look tommorrow evening, although I must say
> that I really don't know too much about the plugins code! I just
> noticed a method in hmp that is an almost exact duplicate of a rails
> method, and updated hmp's one to reflect the latest rails code (that
> basically was the last fix).
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Niels wrote:
> This commit fixes the 2.2 compatibility issue:
> http://github.com/lennart/has_many_polymorphs/commit/bb7e659cf870add3041b5cfaea187857ba388bff
>
> Also see
> http://rubyforge.org/forum/forum.php?thread_id=29515&forum_id=16450
>
> - Niels.
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