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document fix: remove_column takes multiple column_names

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This commit is contained in:
Akira Matsuda
2011-11-07 14:03:33 +09:00
parent 55b203dac1
commit aff9e68cb5
1 changed files with 2 additions and 2 deletions
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4
activerecord/lib/active_record/migration.rb
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@@ -112,8 +112,8 @@ module ActiveRecord
# a column but keeps the type and content.
# * <tt>change_column(table_name, column_name, type, options)</tt>: Changes
# the column to a different type using the same parameters as add_column.
# * <tt>remove_column(table_name, column_name)</tt>: Removes the column named
# +column_name+ from the table called +table_name+.
# * <tt>remove_column(table_name, column_names)</tt>: Removes the column listed in
# +column_names+ from the table called +table_name+.
# * <tt>add_index(table_name, column_names, options)</tt>: Adds a new index
# with the name of the column. Other options include
# <tt>:name</tt>, <tt>:unique</tt> (e.g.