instance method `change_column_comment`

Ruby on Rails 6.1.7.10

Since v5.2.8.1

Available in: 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:

change_column_comment(table_name, column_name, comment_or_changes)

Changes the comment for a column or removes it if nil.

Passing a hash containing :from and :to will make this change reversible in migration:

change_column_comment(:posts, :state, from: "old_comment", to: "new_comment")

Parameters

table_name req
column_name req
comment_or_changes req

Source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 1347
      def change_column_comment(table_name, column_name, comment_or_changes)
        raise NotImplementedError, "#{self.class} does not support changing column comments"
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb line 1347 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::SchemaStatements

Signature

Parameters