1 files changed, 10 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/mysql/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/mysql/schema_definitions.rb
index 2ed4ad16ae..90bcdf3297 100644
--- a/activerecord/lib/active_record/connection_adapters/mysql/schema_definitions.rb
+++ b/activerecord/lib/active_record/connection_adapters/mysql/schema_definitions.rb
@@ -56,6 +56,16 @@ module ActiveRecord
           case type
           when :virtual
             type = options[:type]
+          when :text, :blob, :binary
+            case (size = options[:size])&.to_s
+            when "tiny", "medium", "long"
+              sql_type = @conn.native_database_types[type][:name]
+              type = "#{size}#{sql_type}"
+            else
+              raise ArgumentError, <<~MSG unless size.nil?
+                #{size.inspect} is invalid :size value. Only :tiny, :medium, and :long are allowed.
+              MSG
+            end
           when :primary_key
             type = :integer
             options[:limit] ||= 8