diff options
Diffstat (limited to 'activerecord')
6 files changed, 70 insertions, 84 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index 38d8660721..9d7b923456 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,35 @@ +* Remove text default treated as an empty string in non-strict mode for + consistency with other types. + + Strict mode controls how MySQL handles invalid or missing values in + data-change statements such as INSERT or UPDATE. If strict mode is not + in effect, MySQL inserts adjusted values for invalid or missing values + and produces warnings. + + def test_mysql_not_null_defaults_non_strict + using_strict(false) do + with_mysql_not_null_table do |klass| + record = klass.new + assert_nil record.non_null_integer + assert_nil record.non_null_string + assert_nil record.non_null_text + assert_nil record.non_null_blob + + record.save! + record.reload + + assert_equal 0, record.non_null_integer + assert_equal "", record.non_null_string + assert_equal "", record.non_null_text + assert_equal "", record.non_null_blob + end + end + end + + https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sql-mode-strict + + *Ryuta Kamizono* + * Deprecate `sanitize_conditions`. Use `sanitize_sql` instead. *Ryuta Kamizono* diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb index f09c9c9e7f..3a28879c15 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb @@ -709,7 +709,7 @@ module ActiveRecord end def fetch_type_metadata(sql_type, extra = "") - MySQL::TypeMetadata.new(super(sql_type), extra: extra, strict: strict_mode?) + MySQL::TypeMetadata.new(super(sql_type), extra: extra) end def add_index_length(quoted_columns, **options) diff --git a/activerecord/lib/active_record/connection_adapters/mysql/column.rb b/activerecord/lib/active_record/connection_adapters/mysql/column.rb index 5452e44c84..72b57f4b8f 100644 --- a/activerecord/lib/active_record/connection_adapters/mysql/column.rb +++ b/activerecord/lib/active_record/connection_adapters/mysql/column.rb @@ -2,17 +2,7 @@ module ActiveRecord module ConnectionAdapters module MySQL class Column < ConnectionAdapters::Column # :nodoc: - delegate :strict, :extra, to: :sql_type_metadata, allow_nil: true - - def initialize(*) - super - extract_default - end - - def has_default? - return false if blob_or_text_column? # MySQL forbids defaults on blob and text columns - super - end + delegate :extra, to: :sql_type_metadata, allow_nil: true def blob_or_text_column? /\A(?:tiny|medium|long)?blob\b/ === sql_type || type == :text @@ -29,14 +19,6 @@ module ActiveRecord def auto_increment? extra == "auto_increment" end - - private - - def extract_default - if blob_or_text_column? - @default = null || strict ? nil : "" - end - end end end end diff --git a/activerecord/lib/active_record/connection_adapters/mysql/type_metadata.rb b/activerecord/lib/active_record/connection_adapters/mysql/type_metadata.rb index 1be5cb4740..24dcf852e1 100644 --- a/activerecord/lib/active_record/connection_adapters/mysql/type_metadata.rb +++ b/activerecord/lib/active_record/connection_adapters/mysql/type_metadata.rb @@ -2,13 +2,12 @@ module ActiveRecord module ConnectionAdapters module MySQL class TypeMetadata < DelegateClass(SqlTypeMetadata) # :nodoc: - attr_reader :extra, :strict + attr_reader :extra - def initialize(type_metadata, extra: "", strict: false) + def initialize(type_metadata, extra: "") super(type_metadata) @type_metadata = type_metadata @extra = extra - @strict = strict end def ==(other) @@ -24,7 +23,7 @@ module ActiveRecord protected def attributes_for_hash - [self.class, @type_metadata, extra, strict] + [self.class, @type_metadata, extra] end end end diff --git a/activerecord/test/cases/column_definition_test.rb b/activerecord/test/cases/column_definition_test.rb index 989beaa5c8..a65bb89052 100644 --- a/activerecord/test/cases/column_definition_test.rb +++ b/activerecord/test/cases/column_definition_test.rb @@ -60,14 +60,13 @@ module ActiveRecord end def test_should_not_set_default_for_blob_and_text_data_types - text_type = MySQL::TypeMetadata.new( - SqlTypeMetadata.new(type: :text)) + text_type = MySQL::TypeMetadata.new(SqlTypeMetadata.new(type: :text)) text_column = MySQL::Column.new("title", nil, text_type) - assert_equal nil, text_column.default + assert_nil text_column.default not_null_text_column = MySQL::Column.new("title", nil, text_type, false) - assert_equal "", not_null_text_column.default + assert_nil not_null_text_column.default end def test_has_default_should_return_false_for_blob_and_text_data_types diff --git a/activerecord/test/cases/defaults_test.rb b/activerecord/test/cases/defaults_test.rb index f94815d34c..fcaff38f82 100644 --- a/activerecord/test/cases/defaults_test.rb +++ b/activerecord/test/cases/defaults_test.rb @@ -127,92 +127,66 @@ if current_adapter?(:Mysql2Adapter) ActiveRecord::Base.establish_connection connection end - # MySQL cannot have defaults on text/blob columns. It reports the - # default value as null. + # Strict mode controls how MySQL handles invalid or missing values + # in data-change statements such as INSERT or UPDATE. A value can be + # invalid for several reasons. For example, it might have the wrong + # data type for the column, or it might be out of range. A value is + # missing when a new row to be inserted does not contain a value for + # a non-NULL column that has no explicit DEFAULT clause in its definition. + # (For a NULL column, NULL is inserted if the value is missing.) # - # Despite this, in non-strict mode, MySQL will use an empty string - # as the default value of the field, if no other value is - # specified. + # If strict mode is not in effect, MySQL inserts adjusted values for + # invalid or missing values and produces warnings. In strict mode, + # you can produce this behavior by using INSERT IGNORE or UPDATE IGNORE. # - # Therefore, in non-strict mode, we want column.default to report - # an empty string as its default, to be consistent with that. - # - # In strict mode, column.default should be nil. - def test_mysql_text_not_null_defaults_non_strict + # https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sql-mode-strict + def test_mysql_not_null_defaults_non_strict using_strict(false) do - with_text_blob_not_null_table do |klass| + with_mysql_not_null_table do |klass| record = klass.new - assert_equal "", record.non_null_blob - assert_equal "", record.non_null_text - - assert_nil record.null_blob - assert_nil record.null_text + assert_nil record.non_null_integer + assert_nil record.non_null_string + assert_nil record.non_null_text + assert_nil record.non_null_blob record.save! record.reload + assert_equal 0, record.non_null_integer + assert_equal "", record.non_null_string assert_equal "", record.non_null_text assert_equal "", record.non_null_blob - - assert_nil record.null_text - assert_nil record.null_blob end end end - def test_mysql_text_not_null_defaults_strict + def test_mysql_not_null_defaults_strict using_strict(true) do - with_text_blob_not_null_table do |klass| + with_mysql_not_null_table do |klass| record = klass.new - assert_nil record.non_null_blob + assert_nil record.non_null_integer + assert_nil record.non_null_string assert_nil record.non_null_text - assert_nil record.null_blob - assert_nil record.null_text + assert_nil record.non_null_blob assert_raises(ActiveRecord::StatementInvalid) { klass.create } end end end - def with_text_blob_not_null_table + def with_mysql_not_null_table klass = Class.new(ActiveRecord::Base) - klass.table_name = "test_mysql_text_not_null_defaults" + klass.table_name = "test_mysql_not_null_defaults" klass.connection.create_table klass.table_name do |t| - t.column :non_null_text, :text, null: false - t.column :non_null_blob, :blob, null: false - t.column :null_text, :text, null: true - t.column :null_blob, :blob, null: true + t.integer :non_null_integer, null: false + t.string :non_null_string, null: false + t.text :non_null_text, null: false + t.blob :non_null_blob, null: false end yield klass ensure klass.connection.drop_table(klass.table_name) rescue nil end - - # MySQL uses an implicit default 0 rather than NULL unless in strict mode. - # We use an implicit NULL so schema.rb is compatible with other databases. - def test_mysql_integer_not_null_defaults - klass = Class.new(ActiveRecord::Base) - klass.table_name = "test_integer_not_null_default_zero" - klass.connection.create_table klass.table_name do |t| - t.column :zero, :integer, null: false, default: 0 - t.column :omit, :integer, null: false - end - - assert_equal "0", klass.columns_hash["zero"].default - assert !klass.columns_hash["zero"].null - assert_equal nil, klass.columns_hash["omit"].default - assert !klass.columns_hash["omit"].null - - assert_raise(ActiveRecord::StatementInvalid) { klass.create! } - - assert_nothing_raised do - instance = klass.create!(omit: 1) - assert_equal 0, instance.zero - assert_equal 1, instance.omit - end - ensure - klass.connection.drop_table(klass.table_name) rescue nil - end end end |