i have following models:
class category(models.model): name = models.charfield() ... # fields omitted class prediction(models.model): conversation = models.foreignkey(conversation) category = models.foreignkey(category) ... # fields omitted class conversation(models.model): sid = models.charfield() ... # fields omitted now i'm trying create model serializer category return me following serialized object:
{ "name":"blah", "conversations":[ "2af22188c5c97256", # value of sid field "073aef6aad0883f8", "5d3dc73fc8cf34be", ] } here have in serializer:
class categoryserializer(serializers.modelserializer): conversations = serializers.slugrelatedfield(many=true, read_only=true, source="prediction_set", slug_field='conversation.sid') class meta: model = models.class fields = ('class_name', 'conversations') however, doesn't work because somehow django doesn't allow me set slug_field field that's within object field. suggestions on how accomplish this?
you modelling many-to-many relationship between categorys , conversations explicit table called prediction. django way of doing explicitly state many-to-many on either side of relationship , specify prediction "through-model":
shamelessly stolen example this question:
class category(models.model): name = models.charfield(max_length=255) slug = models.slugfield(unique=true, max_length=255, blank=true,default=none) desc = models.textfield(blank=true, null=true ) ... class post(models.model): title = models.charfield(max_length=255) pub_date = models.datetimefield(editable=false,blank=true) author = models.foreignkey(user, null=true, blank=true) categories = models.manytomanyfield(category, blank=true, through='cattopost') ... class cattopost(models.model): post = models.foreignkey(post) category = models.foreignkey(category) ... this shows way set relationship.
equally shamelessly stolen answer @amir masnouri:
class categoryserializer(serializers.modelserializer): class meta: model = category fields = ('name','slug') class postserializer(serializers.modelserializer): class meta: model = post fields = ('id','{anything want}','categories') depth = 2 this shows nice way of achieving nested serialization behavior like.
