python - For Django Rest Framework, what is the difference in use case for HyperLinkedRelatedField and HyperLinkedIdentityField? -

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i've of course reviewed docs, wondering if more succinctly explain difference in use case , application between these fields. why 1 use 1 field on other? there difference between these fields onetoone relationship?

you use hyperlinkedidentityfield link object being serialized , hyperlinkedrelatedfield link objects related 1 being serialized.

so one-to-one relationship, foreign key relationship, many-to-many relationship , else involving relationships (in django models), want use hyperlinkedrelatedfield. time hyperlinkedrelatedfield used url field can include on serializer point current object.

in django rest framework 3.0.0, there only 2 differences between hyperlinkedrelatedfield , hyperlinkedidentityfield.

  • the source automatically set * (the current object)
  • it set read_only=true, can't changed

which means setting hyperlinkedrelatedfield properties exactly same having hyperlinkedidentityfield.

in older versions of django rest framework (before 3.0.0), hyperlinkedidentityfield used dedicated field resolving url current object. accepted slightly different set of parameters , not subclass of hyperlinkedrelatedfield.


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