instance method `column_exists?`

Ruby on Rails 5.2.8.1

Since v3.0.20

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

column_exists?(column_name, type = nil, options = {})

Checks to see if a column exists.

t.string(:name) unless t.column_exists?(:name, :string)

See connection.column_exists?

Parameters

column_name req
type opt = nil
options opt = {}

Source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb, line 535
      def column_exists?(column_name, type = nil, options = {})
        @base.column_exists?(name, column_name, type, options)
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb line 535 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::Table

Signature

Parameters