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. > >
> def index > @users= User.all > @pic= [] > > @users.each do |p| > @pic<< Picture.where(:phrase_id => :route , :culture_id => > p.culture_id).first > > end > > @pic.compact! > send_data @pic.image, :type => 'image/png', :disposition => 'inline' > > end > > 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. > -- -------------------------------- 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.
