Hi, 

I'll answer you directly, since this is not something to be discussed in rails 
core.

When writing engines, it is a good practice to namespace them 
http://edgeapi.rubyonrails.org/classes/Rails/Engine.html#label-Isolated+Engine

And so you would have a CoreEngine::Article and a Microsite::Article and there 
would be no conflicts or functionality sharing.

But for what I understood of your email, you want microsite to inherit from 
core_engine. What I would do is still namespace them and then make the 
microsite inherit from it, like so:

# core_engine/models/core_engine/article.rb
class CoreEngine::Article < ActiveRecord::Base
  ...
end

# microsite/models/microsite/article.rb
class Microsite::Article < CoreEngine::Article
  ...
end

If you really need to call it Article in your main app, you can do this:

# core_engine/models/article.rb
class ::Article < ActiveRecord::Base
  ...
end

# microsite/models/article.rb
class Article < ::Article
  ...
end

Bare in mind though that in this solution microsite's article is inheriting 
from the application article, which means you will have to make sure 
core_engine loads to the app before microsite.

Hope it helps. ;)
On May 28, 2012, at 2:13 PM, kingston.s wrote:

> My model like this only.......
> class Site < ActiveRecord::Base
> 
>  def view_path
>    "#{SITES_ROOT}/#{self.template.name}/views"
>  end
> 
> 
>  def jeno
>    self.short_name
>  end
> 
> end
> what can i do for this ......???
> On May 28, 5:56 pm, Piotr Sarnacki <[email protected]> wrote:
>> You should almost always namespace your models in engine, no matter if you
>> use isolate_namespace or not. Please read the engines guide to see what
>> isolated_namespace changes:http://edgeguides.rubyonrails.org/engines.html
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> On Mon, May 28, 2012 at 2:27 PM, kingston.s <[email protected]> wrote:
>>> Thanks for quick reply...
>> 
>>> I have not used  isolate_namespace concept...
>> 
>>> controller also not loaded like models...
>> 
>>> cau u plz tell me any other solution
>> 
>>> On May 28, 3:34 pm, Piotr Sarnacki <[email protected]> wrote:
>>>> Short answer is: namespace your models, for example you should have
>>>> Blog::Post instead of Post.
>> 
>>>> And as already been said, this is not a question for rubyonrails-core.
>> 
>>>> On Mon, May 28, 2012 at 11:55 AM, Wael M. Nasreddine <
>> 
>>>> [email protected]> wrote:
>>>>> Hey,
>> 
>>>>> This is a question for rubyonrails-talk, as this mailing list is
>>> reserved
>>>>> for Core members discussing Rails development. So please post your
>>>>> questions there,see this<
>>> http://rubyweekly.us1.list-manage.com/track/click?u=0618f6a79d6bb9675...>
>>> presentation for
>>>>> better overview of Rails Engine.
>> 
>>>>> Cheers,
>>>>> Wael
>> 
>>>>> --
>>>>> *Wael Nasreddine*: Design & Coding at TechnoGate<
>>> http://www.technogate.fr/>
>>>>> contact | [email protected] - +33.6.51.24.04.34 | skype -
>>>>> eMxyzptlk | Github - eMxyzptlk <https://github.com/eMxyzptlk>
>> 
>>>>> On Monday, May 28, 2012 at 11:25 AM, kingston.s wrote:
>> 
>>>>> Hi all,
>> 
>>>>> I trying to load two similar Rails Engine in single app
>>>>> ..
>> 
>>>>> In my app Engine A like a core and engine B like a specific to some
>>>>> other purpose.
>>>>> In this two engines have many models,some models have shared in both
>>>>> engines.
>> 
>>>>> In this i faced one problem if i shared the model means all the method
>>>>> is not loaded correctly..
>>>>> .Ex,i have article model in both engines Engine A have 5 methods and i
>>>>> have over-ride the model in Engine B it has 2 function.
>>>>> what i thought is Engine B article model have Engine A and Engine B
>>>>> methods
>>>>> ,but what it's happen article model have only Engine B model methods
>>>>> only.
>> 
>>>>> if i load manually means it working correctly.
>>>>> I have load one engine in one single app it is working correctly..
>>>>> Please tell me how to load 2 similar engines in one single app...
>> 
>>>>> in Gem file i have loaded the engine ->>>
>> 
>>>>> gem 'core-engine', :path => 'Engines/core-engine'
>>>>> gem 'microsite', :path => 'Engines/microsite'
>> 
>>>>> Thanks.
>> 
>>>>> --
>>>>> You received this message because you are subscribed to the Google
>>> Groups
>>>>> "Ruby on Rails: Core" group.
>>>>> To post to this group, send email to [email protected]
>>> .
>>>>> To unsubscribe from this group, send email to
>>>>> [email protected].
>>>>> For more options, visit this group at
>>>>> http://groups.google.com/group/rubyonrails-core?hl=en.
>> 
>>>>>  --
>>>>> You received this message because you are subscribed to the Google
>>> Groups
>>>>> "Ruby on Rails: Core" group.
>>>>> To post to this group, send email to [email protected]
>>> .
>>>>> To unsubscribe from this group, send email to
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>>>>> For more options, visit this group at
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>> 
>>>> --
>>>> Piotr Sarnackihttp://piotrsarnacki.com
>> 
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "Ruby on Rails: Core" group.
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>> 
>> --
>> Piotr Sarnackihttp://piotrsarnacki.com
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "Ruby on Rails: Core" group.
> To post to this group, send email to [email protected].
> To unsubscribe from this group, send email to 
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> 

Cumprimentos,
Luís Ferreira



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