DRF Foreign Key from reverse lookup - django

Question

Using django rest framework, I'm after this output:
slides = [
{
"id": "1",
"sentence": "The person is in the house.",
"sentence-type": "simple",
"clauses": {
"type": "independent clause",
"description": "An independent clause has a subject and a verb. An independent clause expresses a complete thought."
},
"wordlist": [
{
"pos": "article",
"pos_description": "An article modifies a noun like an adjective does and are considered necessary to provide proper syntax to a sentence.",
"colour": "21 128 61",
"word": "the"
},
Here are my models:
class Sentence(models.Model):
sentence = models.CharField(max_length=500)
class Word(models.Model):
word = models.CharField(max_length=255)
part_of_sentence = models.ForeignKey(PartOfSentence, related_name='pos_word', on_delete=models.CASCADE, blank=True, null=True)
words = models.ForeignKey(Sentence, related_name='sentence_word', on_delete=models.CASCADE, blank=True, null=True)
class PartOfSentence(models.Model):
part_of_sentence = models.CharField(max_length=20)
pos_colour = models.CharField(max_length=20)
pos_description = models.CharField(max_length=512)
class Clause(models.Model):
TYPES = (
('NONE', 'None'),
('INDEPENDENT', 'Independent'),
('DEPENDENT', 'Dependent'),
('COORDINATING_CONJUNCTION', 'Coordinating-Conjunction'),
('SUBORDINATING_CONJUNCTION', 'Subordinating-Conjunction')
)
clause = models.CharField(choices=TYPES, max_length=40, default='None')
And the serializers:
class ClauseSerializer(serializers.ModelSerializer):
class Meta:
model = Clause
fields = ('clause',)
class SentenceSerializer(serializers.ModelSerializer):
clause = ClauseSerializer()
words = serializers.SlugRelatedField(
source='sentence_word',
slug_field='word',
many=True,
read_only=True
)
# part_of_sentence = serializers.SlugRelatedField(
# many=True,
# slug_field='part_of_sentence',
# queryset=PartOfSentence.objects.all()
# )
class Meta:
model = Sentence
fields = ('sentence', 'sentence_type', 'clause', 'words')#, 'part_of_sentence'
Which results in:
[
{
"sentence": "the person is in the house",
"sentence_type": "SIMPLE",
"clause": {
"clause": "INDEPENDENT",
"description": "An independent clause has a subject and a verb. An independent clause expresses a complete thought"
},
"words": [
"the",
"person",
"is"
]
}
]
Which isn't perfect, i.e. the keys are missing for the words array along with the parts_of_words. I think I'm only the right track - my question is:
Can I do a forward lookup from the Word model using SlugRelated field?