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sergiutruta-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

2007-Nov-12 15:01 UTC

User specific data in subdomains

Hi,

I have an app with specific data to each user. I want user *george* to
be able to access his data at george.domain.com, user *dan* to access
his data at dan.domain.com and so on. So I''d have a Users controller
and I suppose I''d have to map domain.com/users/show/george to
george.domain.com. How can I do this? Do I use Request Routing plugin?
Though, how do I do it with this plugin also?

Thanks ;).


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Greg Willits

2007-Nov-12 19:59 UTC

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Re: User specific data in subdomains

On Nov 12, 2007, at 7:01 AM, sergiutruta-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
wrote:
> I have an app with specific data to each user. I want user *george* to
> be able to access his data at george.domain.com, user *dan* to access
> his data at dan.domain.com and so on. So I''d have a Users
controller
> and I suppose I''d have to map domain.com/users/show/george to
> george.domain.com. How can I do this? Do I use Request Routing plugin?
> Though, how do I do it with this plugin also?

Here''s how I do it:

I create a class which contains all the logic needed to dictate the  
behaviors of a subdomain. Let''s call this class Subdomain (usually it  
would be an ActiveRecord class). This class will typically just  
initialize a bunch of instance vars used as settings that make a  
Subdomain unique.

One of those settings is going to be one or more query filters to  
restrict data access. These are just SQL fragments (or :conditions  
hashes) which will modify the WHERE clause of all queries to restrict  
the query to the conditions suitable to the subdomain. So, in your  
case we might have "AND subdomain_name = ''george''"
as the query filter.

class Subdomain

attr_reader :site_name, :query_filter

def initialize
   @query_filter
end

def load_settings
   ... does a query to get all settings...
   ... load results into instance vars...
end

end

Then early in application.rb, you would create an object something  
like this:

@current_subdomain = Subdomain.new
@current_subdomain.load_settings(self.request.subdomains.join(''.''))

You may or may not need the join part (I do state and county  
subdomains for some stuff, and that will join a multiple subdomin  
list into a single string).

Now for all the queries which collect data, you can use the value(s)  
in @current_subdomain.query_filter to add to the :conditions or  
modify an SQL string to restrict the query to specific records  
pertaining to the subdomain.

-- gw (www.railsdev.ws)

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sergiutruta-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

2007-Nov-12 21:29 UTC

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Re: User specific data in subdomains

Greg, thanks for your reply. I understand how to work with this, but
how do I set the usage of subdomains in routes.rb? do I need to do
anything special? you didn''t mention if you use any plugin for this?


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Greg Willits

2007-Nov-13 00:06 UTC

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Re: User specific data in subdomains

On Nov 12, 2007, at 1:29 PM, sergiutruta-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
wrote:
> Greg, thanks for your reply. I understand how to work with this, but
> how do I set the usage of subdomains in routes.rb? do I need to do
> anything special? you didn''t mention if you use any plugin for
this?

There''s nothing to do in routes. No plugins. It''s just simple
application logic that populates an object by reading the subdomain  
from the HTTP headers -- which is what request.subdomains gives you.  
Then using you own object''s instance vars where you need them. No  
magic needed.

-- gw (www.railsdev.ws)



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raghukumar

2007-Nov-13 15:37 UTC

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Re: User specific data in subdomains

Hi Greg,

I din''t get how one can map request URL from
                     domain.com/users/show/george
To
                      george.domain.com

which indirectly means that when the user in the browser types
"domain.com/users/show/george", how i can
take that request to "george.domain.com".   And one more thing is
since "george" is a dynamic value, i am not able
to understand how to do it.

Please make me understand,

Thanks,

Regards,
Raghu Kumar K





On Nov 13, 5:06 am, Greg Willits
<li...-0Bv1hcaDFPRk211Z5VL+QA@public.gmane.org>
wrote:> On Nov 12, 2007, at 1:29 PM,
sergiutr...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org wrote:
>
> > Greg, thanks for your reply. I understand how to work with this, but
> > how do I set the usage of subdomains in routes.rb? do I need to do
> > anything special? you didn''t mention if you use any plugin
for this?
>
> There''s nothing to do in routes. No plugins. It''s just
simple
> application logic that populates an object by reading the subdomain
> from the HTTP headers -- which is what request.subdomains gives you.
> Then using you own object''s instance vars where you need them. No
> magic needed.
>
> --     gw (www.railsdev.ws)

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Greg Willits

2007-Nov-13 19:58 UTC

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Re: User specific data in subdomains

> On Nov 13, 5:06 am, Greg Willits
<li...-0Bv1hcaDFPRk211Z5VL+QA@public.gmane.org> wrote:
>> On Nov 12, 2007, at 1:29 PM,
sergiutr...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org wrote:
>>
>>> Greg, thanks for your reply. I understand how to work with this,
but
>>> how do I set the usage of subdomains in routes.rb? do I need to do
>>> anything special? you didn''t mention if you use any plugin
for this?
>>
>> There''s nothing to do in routes. No plugins. It''s
just simple
>> application logic that populates an object by reading the subdomain
>> from the HTTP headers -- which is what request.subdomains gives you.
>> Then using you own object''s instance vars where you need them.
No
>> magic needed.

On Nov 13, 2007, at 7:37 AM, raghukumar wrote:> I din''t get how one can map request URL from
>    domain.com/users/show/george
> To
>    george.domain.com
> which indirectly means that when the user in the browser types
> "domain.com/users/show/george", how i can
> take that request to "george.domain.com".
No, that wasn''t the original question. We''re not trying
convert URLs
from one format to another. The original question was how to use the  
explicit URLs of george.domain.com, dan.domain.com, mary.domain.com,  
and any *.domain.com and have Rails figure out what to do based on  
that (which turns out to be quite simple).

> And one more thing is since "george" is a dynamic value, i am not
able
> to understand how to do it.
Simply configure your HTTP server to accept any subdomain. In Apache  
this would be:

ServerName   domain.com
ServerAlias  *.domain.com

Now Apache will accept every subdomain.

If someone submits nonsense.domain.com and you have no data for  
"nonsense," you serve a default page that tells the user that.
It''s
just a "page not found" kind of thing.

-- gw (www.railsdev.ws)



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Greg Willits

2007-Nov-14 08:24 UTC

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Re: User specific data in subdomains

On Nov 13, 2007, at 7:37 AM, raghukumar wrote:> I din''t get how one can map request URL from
>    domain.com/users/show/george
> To
>    george.domain.com
> which indirectly means that when the user in the browser types
> "domain.com/users/show/george", how i can
> take that request to "george.domain.com".
> And one more thing is since "george" is a dynamic value, i am not
able
> to understand how to do it.

I went ahead and wrote up an article on all this:

http://www.railsdev.ws/blog/10/using-subdomains-in-rails-apps/

-- gw (www.railsdev.ws)



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Rails - Nov 2007 - User specific data in subdomains

User specific data in subdomains

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Re: User specific data in subdomains

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