@user = User.find_by_user_name(user_name)
if !@user.business_admins.nil?
puts "Am here"
@business_admin = @user.business_admins[0]
end
class User < ActiveRecord::Base
has_many :business_admins
end
class BusinessAdmin < ActiveRecord::Base
belongs_to :user
end
Here what i am trying, I am using Mozilla rest-client, basically here the *
user_name* found in the *User* table, But i didn''t put that id in the *
BusinessAdmin*, So what the problem is when i run the code, this *if
!@user.business_admins.nil?* will return *true*, because am getting this
*"Am
here"
*Have any issues with this model??...*
*
Thankyou
Vishnu*
*
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On 12 April 2012 15:49, amvis <vgrkrishnan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > @user = User.find_by_user_name(user_name) > if !@user.business_admins.nil? > puts "Am here" > @business_admin = @user.business_admins[0] > end > class User < ActiveRecord::Base > has_many :business_admins > end > > class BusinessAdmin < ActiveRecord::Base > belongs_to :user > end > > Here what i am trying, I am using Mozilla rest-client, basically here the > user_name found in the User table, But i didn''t put that id in the > BusinessAdmin, So what the problem is when i run the code, this if > !@user.business_admins.nil? will return true, because am getting this "Am > here"I am not sure what you are saying. If you have user has_many business_admins then @user.business_admins will never be nil. It may be an empty array however. Perhaps you should be testing for the array empty rather than nil. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On 12 April 2012 16:27, amvis <vgrkrishnan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > > On Thursday, 12 April 2012 10:54:35 UTC-4, Colin Law wrote:> >> >> > @user = User.find_by_user_name(user_name) >> > if !@user.business_admins.nil? >> > puts "Am here" >> > @business_admin = @user.business_admins[0] >> > end >> > class User < ActiveRecord::Base >> > has_many :business_admins >> > end >> > >> > class BusinessAdmin < ActiveRecord::Base >> > belongs_to :user >> > end >> > >> > Here what i am trying, I am using Mozilla rest-client, basically here >> > the >> > user_name found in the User table, But i didn''t put that id in the >> > BusinessAdmin, So what the problem is when i run the code, this if >> > !@user.business_admins.nil? will return true, because am getting this >> > "Am >> > here" >> >> >I am not sure what you are saying. If you have user has_many >> >business_admins then @user.business_admins will never be nil. It may >> >be an empty array however. Perhaps you should be testing for the >> >array empty rather than nil. > >>Colin > > Basically, the BusinessAdmin doesn''t have that use_name''s id, then why this > checking happned?First what relationships have you got between the models (has_many, belongs_to or whatever)? As I said last time, if user has_many business_admins then @user.business_admins will always (effectively) be an array, which may be empty. It will never be nil. By the way, you sent your last email to me instead of to the list. Please make sure you reply to the list. Colin> > if !@user.business_admins.nil? > puts "Am here" > @business_admin = @user.business_admins[0] > end > > > Thank you > vishnu >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On Thursday, 12 April 2012 15:54:57 UTC-4, Colin Law wrote:> > > > > > > > On Thursday, 12 April 2012 10:54:35 UTC-4, Colin Law wrote:> > >> > >> > @user = User.find_by_user_name(user_name) > >> > if !@user.business_admins.nil? > >> > puts "Am here" > >> > @business_admin = @user.business_admins[0] > >> > end > >> > class User < ActiveRecord::Base > >> > has_many :business_admins > >> > end > >> > > >> > class BusinessAdmin < ActiveRecord::Base > >> > belongs_to :user > >> > end > >> > > >> > Here what i am trying, I am using Mozilla rest-client, basically here > >> > the > >> > user_name found in the User table, But i didn''t put that id in the > >> > BusinessAdmin, So what the problem is when i run the code, this if > >> > !@user.business_admins.nil? will return true, because am getting this > >> > "Am > >> > here" > >> > >> >I am not sure what you are saying. If you have user has_many > >> >business_admins then @user.business_admins will never be nil. It may > >> >be an empty array however. Perhaps you should be testing for the > >> >array empty rather than nil. > > > >>Colin > > > > Basically, the BusinessAdmin doesn''t have that use_name''s id, then why > this > > checking happned? > > >First what relationships have you got between the models (has_many, > >belongs_to or whatever)? >when i check like this i got the solution> *if !@user.business_admins[0]*.nil?puts "Am here" @business_admin = @user.business_admins[0] end> >As I said last time, if user has_many business_admins then > >@user.business_admins will always (effectively) be an array, which may > >be empty. It will never be nil. > > >By the way, you sent your last email to me instead of to the list. > >Please make sure you reply to the list. > > Colin > > > > > > if !@user.business_admins.nil? > > puts "Am here" > > @business_admin = @user.business_admins[0] > > end > > > > > > Thank you > > vishnu > > > >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/HrrBCKUKJE4J. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On Thursday, 12 April 2012 15:54:57 UTC-4, Colin Law wrote:> > > > > > > > On Thursday, 12 April 2012 10:54:35 UTC-4, Colin Law wrote:> > > > > @user = User.find_by_user_name(user_name) > > if !@user.business_admins.nil? > > puts "Am here" > > @business_admin = @user.business_admins[0] > > end > > class User < ActiveRecord::Base > > has_many :business_admins > > end > > > > class BusinessAdmin < ActiveRecord::Base > > belongs_to :user > > end > > > > Here what i am trying, I am using Mozilla rest-client, basically here > > the > > user_name found in the User table, But i didn''t put that id in the > > BusinessAdmin, So what the problem is when i run the code, this if > > !@user.business_admins.nil? will return true, because am getting this > > "Am > > here" > >I am not sure what you are saying. If you have user has_many > >business_admins then @user.business_admins will never be nil. It may > >be an empty array however. Perhaps you should be testing for the > >array empty rather than nil. > >Colin > > > > Basically, the BusinessAdmin doesn''t have that use_name''s id, then why > this > > checking happned? > > >First what relationships have you got between the models (has_many, > >belongs_to or whatever)? > > >As I said last time, if user has_many business_admins then > >@user.business_admins will always (effectively) be an array, which may > >be empty. It will never be nil. >* if !@user.business_admins[0].nil?* puts "Am here" @business_admin = @user.business_admins[0] end> >By the way, you sent your last email to me instead of to the list. > >Please make sure you reply to the list. > > >Colin > > > > > > if !@user.business_admins.nil? > > puts "Am here" > > @business_admin = @user.business_admins[0] > > end > > > > > Thank you > vishnu > >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/lJCBIYqbByoJ. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On 13 April 2012 06:50, amvis <vgrkrishnan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> [snip] > when i check like this i got the solution > > if !@user.business_admins[0].nil?if !@user.business_admins.empty? might be a bit cleaner and easier to understand, or if @user.business_admins.count == 0 Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.