Can't achieve autocomplete

Hello, I am struggling with autocomplete for a long time. Simply i am loading list of cities to the elasticsearch, i am printing first index so i am sure that Novinki city exists there. And when I do the execute suggest I receive no completion for text “Novin”. I was refering to official tutorial - http://elasticsearch-dsl.readthedocs.io/en/latest/persistence.html Can someone give me a tip what I am doing wrong? Thank you

import json
from elasticsearch_dsl import Search, Index, DocType, Text, Completion
from elasticsearch_dsl.connections import connections


connections.create_connection(hosts=['localhost'])

with open('city_list.json') as json_data:
    cities_json = json.load(json_data)

cities = Index('cities')
cities.delete(ignore=404)
cities.create()


@cities.doc_type
class City(DocType):
    name = Text()
    name_suggest = Completion()
    country = Text()

    class Meta:
        doc_type = 'city'

City.init()

for index, city in enumerate(cities_json['cities']):
    if index == 1:
        print(city) # this prints {'coord': {'lon': 37.666668, 'lat': 55.683334}, 'name': 'Novinki', 'id': 519188, 'country': 'RU'}
    city = City(name=city['name'], country=city['country'])
    city.save()

s = City.search()
s = s.suggest('name_suggestions', 'Novin', completion={'field': 'name_suggest'})
suggestions = s.execute_suggest()
for result in suggestions.name_suggestions:
    print('Suggestions for %s:' % result) # this gives me Suggestions for {'length': 5, 'options': [], 'offset': 0, 'text': 'Novin'}:

[marcelometal]

Hi @HonzaKral ,

I tried to use the analyzer argument in the Completion class, but it fails like one of the comments above:

.../elasticsearch_dsl/mapping.py", line 99, in _collect_analysis
    d = analyzer.get_analysis_definition()
AttributeError: 'str' object has no attribute 'get_analysis_definition'

This is my code:

political_party = Text(
    fields={
        'keyword': Keyword(),
        'suggest': Completion(analyzer=analyzer('brazilian')),
    }
)

I’ve debugged the code and I fixed it adding the _param_defs in the Completion class

 class Completion(Field):
+    _param_defs = {
+        'analyzer': {'type': 'analyzer'},
+    }
     name = 'completion'

I don’t know if it is the best approach, but with some guidance I can open a PR.

PS: the elasticsearch-dsl-py version is 6.2.1

[honzakral]

My bad, please use:

from elasticsearch_dsl import analyzer
analyzer('keyword')