diff options
Diffstat (limited to 'guides/source')
| -rw-r--r-- | guides/source/active_record_validations.md | 2 | ||||
| -rw-r--r-- | guides/source/upgrading_ruby_on_rails.md | 9 |
2 files changed, 10 insertions, 1 deletions
diff --git a/guides/source/active_record_validations.md b/guides/source/active_record_validations.md index a086363cf1..e9157f3db1 100644 --- a/guides/source/active_record_validations.md +++ b/guides/source/active_record_validations.md @@ -892,7 +892,7 @@ Conditional Validation Sometimes it will make sense to validate an object only when a given predicate is satisfied. You can do that by using the `:if` and `:unless` options, which -can take a symbol, a string, a `Proc` or an `Array`. You may use the `:if` +can take a symbol, a `Proc` or an `Array`. You may use the `:if` option when you want to specify when the validation **should** happen. If you want to specify when the validation **should not** happen, then you may use the `:unless` option. diff --git a/guides/source/upgrading_ruby_on_rails.md b/guides/source/upgrading_ruby_on_rails.md index 49a0584d51..651b86275a 100644 --- a/guides/source/upgrading_ruby_on_rails.md +++ b/guides/source/upgrading_ruby_on_rails.md @@ -397,6 +397,15 @@ When using Ruby 2.4, you can preserve the timezone of the receiver when calling ActiveSupport.to_time_preserves_timezone = false +### Changes with JSON/JSONB serialization + +In Rails 5.0, how JSON/JSONB attributes are serialized and deserialized changed. Now, if +you set a column equal to a `String`, Active Record will no longer turn that string +into a `Hash`, and will instead only return the string. This is not limited to code +interacting with models, but also affects `:default` column settings in `db/schema.rb`. +It is recommended that you do not set columns equal to a `String`, but pass a `Hash` +instead, which will be converted to and from a JSON string automatically. + Upgrading from Rails 4.1 to Rails 4.2 ------------------------------------- |