Rails - May 2006 - How to list all models of an application?!?

How can I get a list of all model classes in the domain of a Rails
application (all models, both in "app/models" and in
components/somedir/model.rb)?

Thanx in advance for your precious help!

Edoardo "Dado" Marcora

Here is a god awful hack of some of the code from UserEngine to get  
controllers.  All uglyness is mine and should not reflect poorly on  
UserEngine.  UserEngine is an innocent bystander in this case.   
Changing the path and the split stuff might make it work for you.


     # Load all the controller files
     controller_files = Dir[RAILS_ROOT + "/app/controllers/**/ 
*_controller.rb"]

    # should we check to see if this is defined? I.E. will this code  
ever run
       # outside of the framework environment...?
       controller_files += Dir[Engines.config(:root) + "/**/app/ 
controllers/**/*_controller.rb"]

     # we need to get all the controller names
     @controllers = Hash.new
     controller_files.each do |file_name|
       file_name =
file_name.split("\/").last.chomp("_controller.rb")
       @controllers[file_name.pluralize] = file_name.titleize
       #require file_name #if /_controller.rb$/ =~ file_name
     end

This gets me a hash that I use to build a menu for an app.  I also  
use the following to clear certain types out off the hash.
   def clear_admin(controllers)
     controllers.delete_if {|key,value| key == "users"}
     controllers.delete_if {|key,value| key == "logins"}
   end

   def clear_lookups(controllers)
     controllers.delete_if {|key,value| key ==
"method_of_estimations"}
     controllers.delete_if {|key,value| key ==
"method_of_observations"}
     controllers.delete_if {|key,value| key == "nests_types"}
     controllers.delete_if {|key,value| key == "decay_classes"}
     controllers.delete_if {|key,value| key == "food_types"}
     controllers.delete_if {|key,value| key == "feed_methods"}
     controllers.delete_if {|key,value| key == "species"}

   end





On May 23, 2006, at 1:20 PM, Edoardo Dado Marcora wrote:
> How can I get a list of all model classes in the domain of a Rails
> application (all models, both in "app/models" and in
> components/somedir/model.rb)?
>
> Thanx in advance for your precious help!
>
> Edoardo "Dado" Marcora
>
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails

Thanx Erik... that helps a lot and it''s probably the way I will go
by!!!

However, I was wondering whether there is a method that could retrieve the
model list somewhere in the "glue" layer that ties together ActionPack
and
ActiveRecord in Rails.

Thanx again,

Dado

Erik B. Ordway wrote:
> Here is a god awful hack of some of the code from UserEngine to get
> controllers.  All uglyness is mine and should not reflect poorly on
> UserEngine.  UserEngine is an innocent bystander in this case.
> Changing the path and the split stuff might make it work for you.
> 
> 
>      # Load all the controller files
>      controller_files = Dir[RAILS_ROOT + "/app/controllers/**/
> *_controller.rb"]
> 
>     # should we check to see if this is defined? I.E. will this code
> ever run
>        # outside of the framework environment...?
>        controller_files += Dir[Engines.config(:root) + "/**/app/
> controllers/**/*_controller.rb"]
> 
>      # we need to get all the controller names
>      @controllers = Hash.new
>      controller_files.each do |file_name|
>        file_name =
file_name.split("\/").last.chomp("_controller.rb")
>        @controllers[file_name.pluralize] = file_name.titleize
>        #require file_name #if /_controller.rb$/ =~ file_name
>      end
> 
> This gets me a hash that I use to build a menu for an app.  I also
> use the following to clear certain types out off the hash.
>    def clear_admin(controllers)
>      controllers.delete_if {|key,value| key == "users"}
>      controllers.delete_if {|key,value| key == "logins"}
>    end
> 
>    def clear_lookups(controllers)
>      controllers.delete_if {|key,value| key ==
"method_of_estimations"}
>      controllers.delete_if {|key,value| key ==
"method_of_observations"}
>      controllers.delete_if {|key,value| key == "nests_types"}
>      controllers.delete_if {|key,value| key == "decay_classes"}
>      controllers.delete_if {|key,value| key == "food_types"}
>      controllers.delete_if {|key,value| key == "feed_methods"}
>      controllers.delete_if {|key,value| key == "species"}
> 
>    end
> 
> 
> 
> 
> 
> On May 23, 2006, at 1:20 PM, Edoardo Dado Marcora wrote:
> 
>> How can I get a list of all model classes in the domain of a Rails
>> application (all models, both in "app/models" and in
>> components/somedir/model.rb)?
>>
>> Thanx in advance for your precious help!
>>
>> Edoardo "Dado" Marcora
>>
>>
>> _______________________________________________
>> Rails mailing list
>> Rails@lists.rubyonrails.org
>> http://lists.rubyonrails.org/mailman/listinfo/rails

Edoardo Marcora wrote:
> Thanx Erik... that helps a lot and it''s probably the way I will go
by!!!
> 
> However, I was wondering whether there is a method that could retrieve 
> the
> model list somewhere in the "glue" layer that ties together
ActionPack
> and
> ActiveRecord in Rails.
> 
> Thanx again,
> 
> Dado
ActiveRecord::Base.subclasses

j`ey
http://www.eachmapinject.com

-- 
Posted via http://www.ruby-forum.com/.

ActiveRecord::Bases.subclasses is protected.

Object.subclasses_of(ActiveRecord::Base) should do what you want, but
you will need to ensure that all the model files have been loaded.
This should do it:

Dir.glob(RAILS_ROOT + ''/app/models/**/*.rb'').each { |file|
require file }

-Jonathan.

On 5/24/06, j`ey <joey@eachmapinject.com> wrote:
> Edoardo Marcora wrote:
> > Thanx Erik... that helps a lot and it''s probably the way I
will go by!!!
> >
> > However, I was wondering whether there is a method that could retrieve
> > the
> > model list somewhere in the "glue" layer that ties together
ActionPack
> > and
> > ActiveRecord in Rails.
> >
> > Thanx again,
> >
> > Dado
> ActiveRecord::Base.subclasses
>
> j`ey
> http://www.eachmapinject.com
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

Jonathan Viney wrote:
> ActiveRecord::Bases.subclasses is protected.
ActiveRecord::Base.send(:subclasses)

j`ey
http://www.eachmapinject.com

-- 
Posted via http://www.ruby-forum.com/.

Also this: http://rav.rubyforge.org/
Gives you a image of your models...

-- 
Posted via http://www.ruby-forum.com/.