Question

Is this type of thing allowed in Rails: Model.find_by_X_and_Y_and_Z(attribute1, attribute2, attribute3)

Answer 1

From http://ar.rubyonrails.org/classes/ActiveRecord/Base.html

It‘s also possible to use multiple
attributes in the same find by
separating them with “and”, so you get
finders like
Person.find_by_user_name_and_password
or even
Payment.find_by_purchaser_and_state_and_country.
So instead of writing
Person.find(:first, :conditions =>
[“user_name = ? AND password = ?”,
user_name, password]), you just do
Person.find_by_user_name_and_password(user_name,
password).