Can you paste what you have in your index method? You should not be getting this error because we have already defined @pic as an empty array.
On Tue, Jun 21, 2011 at 8:10 PM, joanne ta <[email protected]> wrote: > > > On Tue, Jun 21, 2011 at 10:27 AM, Chirag Singhal <[email protected] > > wrote: > >> Oh yes... sorry about that. >> I assumed that you will find picture for every query. >> >> You can try this instead: >> def index >> @users= User.all >> @pic = [] >> >> @users.each do |p| >> @pic << Picture.where(:phrase_id => :route , :culture_id => >> p.culture_id).limit(1) >> end >> @pic.compact! >> end >> >> by calling compact! on the array, we will eliminate all nil object. >> >> On another note, are you sure, this is what you want to do? If you have >> 100 users, it will fire 100 sql queries which is not good. >> >> Yes i think i have that problem as well because if i remove "@users.each > do |p| " > and then it will cause undefined method of culture_id.. > plus when i call @pic.compact! , it gives me > > NoMethodError (You have a nil object when you didn't expect it! > You might have expected an instance of Array. > The error occurred while evaluating nil.compact!): > app/controllers/patients_controller.rb:29:in `index' > > what is mean? cuz i want to display picture on the browser too... > > please help... thank you very much > > Joanne > >> >> >> On Tue, Jun 21, 2011 at 7:42 PM, joanne ta <[email protected]> wrote: >> >>> it does not work, it is complaining other error >>> >>> NoMethodError (undefined method `image' for [nil]:Array): >>> app/controllers/patients_controller.rb:27:in `block in index' >>> app/controllers/patients_controller.rb:25:in `each' >>> app/controllers/patients_controller.rb:25:in `index' >>> >>> >>> >>> On Tue, Jun 21, 2011 at 9:57 AM, Chirag Singhal < >>> [email protected]> wrote: >>> >>>> Your index action should be something like this: >>>> >>>> def index >>>> @users= User.all >>>> @pic = [] >>>> >>>> @users.each do |p| >>>> @pic << Picture.where(:phrase_id => :route , :culture_id => >>>> p.culture_id).limit(1) >>>> end >>>> end >>>> >>>> -- >>>> 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/-/B259TKI0970J. >>>> >>>> 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-talk?hl=en. >>>> >>> >>> >>> >>> -- >>> -------------------------------- >>> >>> Thank you, >>> >>> Yen >>> >>> >>> -- >>> 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 [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-talk?hl=en. >>> >> >> >> >> -- >> Chirag >> http://sumeruonrails.com >> >> -- >> 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 [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-talk?hl=en. >> > > > > -- > 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 [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-talk?hl=en. > -- Chirag http://sumeruonrails.com -- 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 [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-talk?hl=en.
