Hi
I have the models roles, users and user_roles. The relationship among
them is
user.r
-------
user has_many user_roles
user has_many roles, :through => :user_roles
role.rb
======
role has_many user_roles
role has_many users, :through => :user_roles
user_role.rb
=======belongs_to :user
belongs_to :role
Suppose a login user1 has roles [admin, staff] And login user2 has
only one role say [participant] Now how can I check the cases
1)a login user is an admin or staff
2) a login user has_role participant?
And also I would like to know whether this can be written using
named scopes.(I am totally new to named scopes)
Thanks in advance
Tom
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user1.roles returns an array of roles.
The array class has a function "include?(obj)" that returns true or
false.
Something like this should work:
user1.roles.include?(Role.find_by_name(''admin''))
Named scopes are not ment for stuff like this.
You can create a function on the user model "is_admin?" for the code
above. That way if how an admin is defined changes, you only need to
update the code in one place.
On Apr 7, 1:38 pm, Tom Mac <li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> Hi
> I have the models roles, users and user_roles. The relationship among
> them is
>
> user.r
> -------
> user has_many user_roles
> user has_many roles, :through => :user_roles
>
> role.rb
> ======>
> role has_many user_roles
> role has_many users, :through => :user_roles
>
> user_role.rb
> =======> belongs_to :user
> belongs_to :role
>
> Suppose a login user1 has roles [admin, staff] And login user2 has
> only one role say [participant] Now how can I check the cases
>
> 1)a login user is an admin or staff
> 2) a login user has_role participant?
>
> And also I would like to know whether this can be written using
> named scopes.(I am totally new to named scopes)
>
> Thanks in advance
> Tom
> --
> Posted viahttp://www.ruby-forum.com/.
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Better off saying !roles.find_by_name("admin").blank?
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On 07/04/2010, at 11:40 PM, Sharagoz
<sharagoz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> user1.roles returns an array of roles.
> The array class has a function "include?(obj)" that returns true
or
> false.
>
> Something like this should work:
> user1.roles.include?(Role.find_by_name(''admin''))
>
> Named scopes are not ment for stuff like this.
> You can create a function on the user model "is_admin?" for the
code
> above. That way if how an admin is defined changes, you only need to
> update the code in one place.
>
> On Apr 7, 1:38 pm, Tom Mac
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
>> Hi
>> I have the models roles, users and user_roles. The relationship
>> among
>> them is
>>
>> user.r
>> -------
>> user has_many user_roles
>> user has_many roles, :through => :user_roles
>>
>> role.rb
>> ======>>
>> role has_many user_roles
>> role has_many users, :through => :user_roles
>>
>> user_role.rb
>> =======>> belongs_to :user
>> belongs_to :role
>>
>> Suppose a login user1 has roles [admin, staff] And login user2
>> has
>> only one role say [participant] Now how can I check the cases
>>
>> 1)a login user is an admin or staff
>> 2) a login user has_role participant?
>>
>> And also I would like to know whether this can be written using
>> named scopes.(I am totally new to named scopes)
>>
>> Thanks in advance
>> Tom
>> --
>> Posted viahttp://www.ruby-forum.com/.
>
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> .
>
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