Rails validate uniqueness

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

Rails validate uniqueness

validates :email, uniqueness: true

Similar codes

1 vote359 views1 answer
Rails get list of tables
Ruby
1 vote345 views1 answer
How to get tables list in rails
Ruby
0 vote327 views1 answer
Start rails server on different port
Ruby
1 vote382 views1 answer
Ruby non greedy regex
Ruby
0 vote340 views2 answers
Ruby delete first element of array
Ruby
0 vote350 views1 answer
Full error messages rails
Ruby
1 vote368 views3 answers
Rails generate rake task
Ruby
0 vote358 views1 answer
Ruby median find
Ruby
0 vote312 views2 answers
Ruby do something x times
Ruby
0 vote323 views1 answer
Selenium webdriver get attribute ruby
Ruby