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Explain use case for display_value in docs

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James Beith 2015-08-10 13:02:07 +01:00
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docs/api-guide/relations.md
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@ -539,7 +539,7 @@ to ``True``.
## The `display_value` method
The `__str__` (`__unicode__` on Python 2) method of the model will be called to generate string representations of the objects used to populate the `choices` property. To provide customized representations, override `display_value` of a `RelatedField` subclass. This method will receive a model object, and should return a string suitable for representing it. For example:
The `__str__` (`__unicode__` on Python 2) method of the model will be called to generate string representations of the objects used to populate the `choices` property. These choices are used to populate select HTML inputs in the browsable API. To provide customized representations for such inputs, override `display_value` of a `RelatedField` subclass. This method will receive a model object, and should return a string suitable for representing it. For example:
class TrackPrimaryKeyRelatedField(serializers.PrimaryKeyRelatedField):
def display_value(self, instance):