instance method `index_name_exists?`

Ruby on Rails 3.0.20

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:

index_name_exists?(table_name, index_name, default)

Verify the existence of an index with a given name.

The default argument is returned if the underlying implementation does not define the indexes method, as there’s no way to determine the correct answer in that case.

Parameters

table_name req
index_name req
default req

Source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 403
      def index_name_exists?(table_name, index_name, default)
        return default unless respond_to?(:indexes)
        index_name = index_name.to_s
        indexes(table_name).detect { |i| i.name == index_name }
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb line 403 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::SchemaStatements

Signature

Parameters