Using ObjectField/NestedField- Empty array

[yarnball]

Hi,

I am trying to return data from a function, but the result is empty:

For example, the result is:

"name": "XYZ",
"tag" : [ { }, { } ],

But should be:

"name": "XYZ"
"tag": {1: [{'taglevel': 1, 'name': Foo'}], 2: [{'taglevel': 2, 'name': Bar'}}

I have tried both the NestedField and ObjectField options. Both gave the same traceback (as per below).

I used pdb to debug, and I can see the correct result at return grouped_tags but it never arrives in elasticsearch.

IF THIS ISN'T POSSIBLE PLEASE tell me as I have spent weeks on this, and raised issues here and StackOverflow.

Otherwise, how can I get the results from my function?

Thanks

documents.py

vehicle = Index('vehicle')

vehicle.settings(
    number_of_shards=1,
    number_of_replicas=0
)

@vehicle.doc_type
class VehicalDocument(DocType):
    tag = fields.ObjectField(attr="get_grouped_tags")
    class Meta:
        model = Vehicle
        fields = [
            'name'
        ] 

models.py

class Tag(models.Model):
    name = models.CharField("Name", max_length=5000, blank=True)
    taglevel = models.IntegerField("Tag level", null=True, blank=True)

class Vehicle(models.Model):
    title = models.CharField("Title", max_length=10000, blank=True)
    tag = models.ManyToManyField('Tag', blank=True)

    def get_grouped_tags(self):
        tag = self.tag.order_by('taglevel')
        grouped_tags = {
            tag_level: [
                { 'name': tag_of_level.name, 'taglevel': tag_of_level.taglevel, }
                for tag_of_level in tags_of_level
            ] for tag_level, tags_of_level
            in groupby(tag, lambda tag: tag.taglevel)
        }
        return grouped_tags

[sabricot]

You don't declare the mapping for the ObjectField but i guess it is because your mapping is kind of dynamic ? it can be one time {1: [{'taglevel': 1, 'name': Foo'}], 2: [{'taglevel': 2, 'name': Bar'}} another time {1: [{'taglevel': 1, 'name': Foo'}]} and so on ?

You need to declare the mapping of your data in ObjectField, but as your data is formated now, it will not work.
Can you put you data in a list of objects instead, like this ?
[{'find_name_1': 1, 'find_name_2': [{'taglevel': 1, 'name': Foo'}]}, {'find_name_1': 2', 'find_a_name_2': [{'taglevel': 2, 'name': Bar'}] } ]

Sorry for the dummy example i don't know how to call these fields :)
Then you need to declare the mapping in Objectfield.

ObjectField(attr="get_grouped_tags", properties={
        'field_name_1': fields.IntergerField(),
        'field_name_2': fields.ObjectField(properties={
                'name': fields.IntergerField(),
                'tagLevel': fields.StringField(),
        }),
    }
)

I haven't test theses examples it's just some indications.
You probably shouldn't use a small library, not release on pip and with not many contrib/stargazers, if you don't really know exactly what you want from it.