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MySQL: change_column raises if the table or column doesn't exist.

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git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7665 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
This commit is contained in:
Jeremy Kemper
2007-09-28 14:10:51 +00:00
parent ccb87e2f69
commit 7cb1f93bcc
1 changed files with 5 additions and 1 deletions
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6
activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
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@@ -408,7 +408,11 @@ module ActiveRecord
def change_column(table_name, column_name, type, options = {}) #:nodoc:
unless options_include_default?(options)
options[:default] = select_one("SHOW COLUMNS FROM #{table_name} LIKE '#{column_name}'")["Default"]
if result = select_one("SHOW COLUMNS FROM #{table_name} LIKE '#{column_name}'")
options[:default] = result['Default']
else
raise "No such column: #{table_name}.#{column_name}"
end
end
change_column_sql = "ALTER TABLE #{table_name} CHANGE #{quote_column_name(column_name)} #{quote_column_name(column_name)} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"