Error when indexing using elasticsearch_dsl library in python

[Ammar_Khan]

Hello everyone!

I am working in django, a python framework. I am having an error while I am indexing my data. The error is just related when I insert Nested type when defining a doctype.

I have the following models:

class PostUser(models.Model):

user_id = models.CharField(max_length=1000,blank=True,null=True)
reputation = models.CharField(max_length = 1000 , blank = True , null = True)

def __unicode__(self):
    return self.user_id

def indexing(self):
    obj = PostUserIndex(
        meta = {'id': self.id},
        user_id = self.user_id,
        reputation = self.reputation,
    )
    obj.save(index = 'post-user-index')
    return obj.to_dict(include_meta=True)

class Posts(models.Model):

user_post_id = models.CharField(max_length = 1000 , blank = True , null = True)
score = models.CharField(max_length = 1000 , blank = True , null = True)
owner_user_id = models.ForeignKey(PostUser,default="-100")


def __unicode__(self):

    return self.user_post_id

def indexing(self):
    obj = PostsIndex(
        meta = {'id': self.id},
        user_post_id = self.user_post_id,
        score = self.score,
        owner_user_id = self.owner_user_id,
    )
    obj.save(index = 'newuserposts-index')
    return obj.to_dict(include_meta=True)

I am trying to index as follow:

class PostUserIndex(DocType):
user_id = Text()
reputation = Text()

class PostsIndex(DocType):
user_post_id = Text()
score = Text()
owner_user_id = Nested(PostUserIndex)

Then i run the following method to index data:

def posts_indexing():
PostsIndex.init(index='newuserposts-index')
es = Elasticsearch()
bulk(client=es, actions=(b.indexing() for b in models.Posts.objects.all().iterator()))

It throws the following error and the full stack is as below:

Traceback (most recent call last):
File "", line 1, in
File "/Users/ammarkhan/Desktop/danny/src/dataquerying/datatoindex.py", line 74, in new_user_posts_indexing
bulk(client=es, actions=(b.indexing() for b in models.Posts.objects.all().iterator()))
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch/helpers/init.py", line 257, in bulk
for ok, item in streaming_bulk(client, actions, **kwargs):
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch/helpers/init.py", line 180, in streaming_bulk
client.transport.serializer):
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch/helpers/init.py", line 58, in _chunk_actions
for action, data in actions:
File "/Users/ammarkhan/Desktop/danny/src/dataquerying/datatoindex.py", line 74, in
bulk(client=es, actions=(b.indexing() for b in models.Posts.objects.all().iterator()))
File "/Users/ammarkhan/Desktop/danny/src/dataquerying/models.py", line 167, in indexing
obj.save(index = 'newuserposts-index')
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/document.py", line 405, in save
self.full_clean()
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/utils.py", line 417, in full_clean
self.clean_fields()
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/utils.py", line 403, in clean_fields
data = field.clean(data)
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/field.py", line 179, in clean
data = super(Object, self).clean(data)
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/field.py", line 90, in clean
data = self.deserialize(data)
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/field.py", line 86, in deserialize
return self._deserialize(data)
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/field.py", line 166, in _deserialize
return self._wrap(data)
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/field.py", line 142, in _wrap
return self._doc_class.from_es(data)
File "/Users/ammarkhan/Desktop/danny/lib/python2.7/site-packages/elasticsearch_dsl/utils.py", line 342, in from_es
meta = hit.copy()
AttributeError: ‘PostUser' object has no attribute 'copy'