John Merlino
2011-Apr-26 00:11 UTC
undefined method error because I am not understanding Rails initializers
Hey all,
In app/builders, I have a file called table_builder.rb. In the
constructor method of my TableBuilder class, I call an instance method
called assign_attributes which takes a hash and converts the key/value
pairs into instance methods.
The assign_attributes method is declared in the following directory:
lib/core_extensions
In that directory I have a file called core.rb which contains the class
Object and the instance method assign_attributes is a method of Object
class (and so when you declare a class, since a class is an object, all
classes will inherit from the Object class since Object is the root
class of all classes):
class Object
def assign_attributes(attributes)
attributes.each_pair { |k,v| send("#{k}=", v) if
respond_to?("#{k}=") } if attributes
end
end
Hence, this instance method should be available to all classes,
including my TableBuilder class since TableBuilder implicitly inherits
from Object. The problem is I believe the Object class is never found.
In order to make it be found, in my initializers directory, I create a
file called ext.rb and add the following line:
require "core_extensions/core"
Dir[File.join(Rails.root, "lib", "core_extensions",
"*.rb")].each {|l|
require l }
This should require that core.rb script in all of the other scripts,
including builders/table_builder.rb
But when I load the page, I am greeted with an undefined method
exception:
undefined method `assign_attributes'' for
#<TableBuilder:0x00000100fc7708>
Thanks for response.
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John Merlino
2011-Apr-26 00:47 UTC
Re: undefined method error because I am not understanding Rails initializers
I restarted the server and it appears to have worked. -- Posted via http://www.ruby-forum.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 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.