Question

I have this method:

def validates_image_dependents
  post = self.find(params[:id])
   i=0
   for this_post in Post.all
    if this_post.posted_filename == post.post_filename
     i+=1
    end
   end
 return i > 1
end

I want the method return true or false dependend if i > 1, but I get nil.

What am I doing bad?

Without method works fine.

Thank you

Answer 1

Looks like you see nil result in the irb output like this:

irb(main):018:0> def validates_image_dependents                                                                 
irb(main):019:1>   post = self.find(params[:id])                                                                
irb(main):020:1>    i=0                                                                                         
irb(main):021:1>    for this_post in Post.all                                                                   
irb(main):022:2>     if this_post.posted_filename == post.post_filename                                         
irb(main):023:3>      i+=1                                                                                      
irb(main):024:3>     end                                                                                        
irb(main):025:2>    end                                                                                         
irb(main):026:1>  return i > 1                                                                                  
irb(main):027:1> end                                                                                            
=> nil 

This happens because you defined method validates_image_dependents and definition of method expression returned nil.

You need to execute your method to get actual result:

irb(main):028:0> validates_image_dependents 
=> true