问题
I tried creating a model called "class" (as in a graduating class of students), and encountered all kinds of problems. What are some other words or class names to avoid in Rails?
Some links I've found:
http://juicebar.wordpress.com/2007/05/30/reserved-words-in-rails/
http://railsforum.com/viewtopic.php?id=22242
回答1:
This page has a very long list of words not to use:
https://reservedwords.herokuapp.com/words
Because 'class' comes up very commonly as a name with metaprogamming, I think the accepted ruby alternative is 'klass'. This is obviously a different context from your graduating class situation, but maybe still helpful.
回答2:
You've got most of them there. Obviously, you also need to avoid the Ruby keywords:
alias and BEGIN begin break case class def defined
do else elsif END end ensure false for if
in module next nil not or redo rescue retry
return self super then true undef unless until when
while yield
(from http://www.zenspider.com/Languages/Ruby/QuickRef.html#4).
Also, don't name a model Transaction (but the generator warns about that!).
回答3:
Class is a built-in ruby class. It is what classes is an instance of.
class Foo
end
puts Foo.class
# => Class
Overriding that blows up the entire object structure in Ruby.
来源：https://stackoverflow.com/questions/694106/rails-reserved-class-names