Rails validators

validates :name, length: { minimum: 2 } # or { maximum: 500 } or { in: 6..20 } or { is: 6 } 
validates :name, :login, :email, presence: true
validates :email, uniqueness: true
validates :switch, inclusion: { in: [true, false]  }
validates :terms_of_service, acceptance: true
validates :size, inclusion: { in: %w(small medium large), message: "%{value} is not a valid size" }
validates :legacy_code, format: { with: /\A[a-zA-Z]+\z/, message: "only allows letters" }

Source: guides.rubyonrails.org

Similar codes

2 votes112 views1 answer
Ruby pop array
Ruby
6 votes199 views1 answer
Ruby comparison operators
Ruby
1 vote116 views1 answer
What do naming conventions do in rails?
Ruby
1 vote164 views1 answer
Ruby filter
Ruby
0 vote158 views1 answer
Transfer encoding chunked ruby
Ruby
6 votes270 views1 answer
Contains ruby array
Ruby
4 votes205 views1 answer
Button in rails
Ruby
1 vote146 views2 answers
Run rake task in rails console
Ruby
0 vote148 views1 answer
Paranoia gem
Ruby
5 votes265 views1 answer
A Ruby write to file example
Ruby