CODEWITHSUNDEEP
ruby-on-railsruby
Mr. Black
Mr. Black

Reputation: 12122

named scope vs module in ruby on rails

Please explain with example difference between named scope and module.

Upvotes: 0

Views: 174

Answers (1)

Tam
Tam

Reputation: 12042

You would use Named scope if you want to package multiple conditions in Rails such as:

named_scope :active, :conditions => ['active = ?', true]
named_scope :legal_age, :conditions => ['age > ?', 21]

the good advantage of named scopes is you can chain them together. for instance:

user.active.legal_age

Module is used to group similar things together. So normally if you have code that needs to be shared across you app you would define a module in your lib directory and put classes such as.

module MyModule
   class MyClass
     ....
   end
end

Module have other use cases, this is the main one from my experience.

Upvotes: 2

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