diff options
| -rw-r--r-- | activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb index 5939ee9956..eec0bc8518 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb @@ -790,7 +790,7 @@ module ActiveRecord # [<tt>:type</tt>] # The reference column type. Defaults to +:integer+. # [<tt>:index</tt>] - # Add an appropriate index. Defaults to false. + # Add an appropriate index. Defaults to false. # See #add_index for usage of this option. # [<tt>:foreign_key</tt>] # Add an appropriate foreign key constraint. Defaults to false. @@ -1128,7 +1128,6 @@ module ActiveRecord index_type ||= options[:unique] ? "UNIQUE" : "" index_name = options[:name].to_s if options.key?(:name) index_name ||= index_name(table_name, index_name_options(column_names)) - max_index_length = options.fetch(:internal, false) ? index_name_length : allowed_index_name_length if options.key?(:algorithm) algorithm = index_algorithms.fetch(options[:algorithm]) { @@ -1142,9 +1141,8 @@ module ActiveRecord index_options = options[:where] ? " WHERE #{options[:where]}" : "" end - if index_name.length > max_index_length - raise ArgumentError, "Index name '#{index_name}' on table '#{table_name}' is too long; the limit is #{max_index_length} characters" - end + validate_index_length!(table_name, index_name, options.fetch(:internal, false)) + if data_source_exists?(table_name) && index_name_exists?(table_name, index_name, false) raise ArgumentError, "Index name '#{index_name}' on table '#{table_name}' already exists" end @@ -1276,8 +1274,10 @@ module ActiveRecord end end - def validate_index_length!(table_name, new_name) # :nodoc: - if new_name.length > allowed_index_name_length + def validate_index_length!(table_name, new_name, internal = false) # :nodoc: + max_index_length = internal ? index_name_length : allowed_index_name_length + + if new_name.length > max_index_length raise ArgumentError, "Index name '#{new_name}' on table '#{table_name}' is too long; the limit is #{allowed_index_name_length} characters" end end |