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| -rw-r--r-- | docs/topics/3.0-announcement.md | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/docs/topics/3.0-announcement.md b/docs/topics/3.0-announcement.md index 35d725ff..144d3550 100644 --- a/docs/topics/3.0-announcement.md +++ b/docs/topics/3.0-announcement.md @@ -125,14 +125,41 @@ The corresponding code would now look like this: logging.info('Creating ticket "%s"' % name) extras = {'user': request.user} # Include the user when saving. serializer.save(extras=extras) - + +#### Printable serializer reprensentations. + +Serializer instances now support a printable representation that allows you to inspect the fields present on the instance. + +For instance, given the following example model: + + class LocationRating(models.Model): + location = models.CharField(max_length=100) + rating = models.IntegerField() + created_by = models.ForeignKey(User) + +Let's create a simple `ModelSerializer` class c. + + class LocationRatingSerializer(serializer.ModelSerializer): + class Meta: + model = LocationRating + +We can now inspect its representation in the Django shell, using `python manage.py shell`... + + >>> serializer = LocationRatingSerializer() + >>> print(serializer) # Or use `print serializer` in Python 2.x + LocationRatingSerializer(): + id = IntegerField(label='ID', read_only=True) + location = CharField(max_length=100) + rating = IntegerField() + created_by = PrimaryKeyRelatedField(queryset=User.objects.all()) + #### Always use `fields`, not `exclude`. -The `exclude` option is no longer available. You should use the more explicit `fields` option instead. +The `exclude` option on `ModelSerializer` is no longer available. You should use the more explicit `fields` option instead. #### The `extra_kwargs` option. -The `read_only_fields` and `write_only_fields` options have been removed and replaced with a more generic `extra_kwargs`. +The `read_only_fields` and `write_only_fields` options on `ModelSerializer` have been removed and replaced with a more generic `extra_kwargs`. class MySerializer(serializer.ModelSerializer): class Meta: @@ -177,7 +204,7 @@ Alternatively, specify the field explicitly on the serializer class: #### Fields for model methods and properties. -You can now specify field names in the `fields` option that refer to model methods or properties. For example, suppose you have the following model: +With `ModelSerilizer` you can now specify field names in the `fields` option that refer to model methods or properties. For example, suppose you have the following model: class Invitation(models.Model): created = models.DateTimeField() |