Diselesaikan: dapatkan daftar semua dokumen di django-elasticsearch-dsl

Masalah utamanya adalah Elasticsearch tidak memiliki cara asli untuk mendapatkan daftar semua dokumen dalam indeks tertentu. Anda dapat menggunakan API pencarian, tetapi ini hanya akan mengembalikan satu dokumen dalam satu waktu.

Saya menggunakan django-elasticsearch-dsl dan saya ingin mendapatkan daftar semua dokumen dalam index. Bagaimana saya bisa melakukan itu?

A:

Anda dapat menggunakan Search objek dari django_elasticsearch_dsl. Ini adalah subkelas dari ElasticsearchDSL Cari objek, sehingga Anda dapat menggunakan semua metode dari sana juga. Dokumen untuk itu ada di sini: https://elasticsearch-dsl.readthedocs.io/en/latest/search_dsl.html#the-search-object

Mendapatkan semua dokumen

<code>from django_elasticsearch_dsl import Search, Index






    s = Search(index='blog')

        .query('match', title='python')  
    response = s.execute()
    for hit in response:   # iterate over hits from response object

        print(hit)          # print each hit as a dict (default) 
    for hit in s:          # iterate over hits from search query directly

        print(hit)          # print each hit as a dict (default) 
    for hit in s[0:10]:     # slice results to get only first 10 hits

        print(hit)          # print each hit as a dict (default) 
    len(s)                  # number of total hits found by query (slow!)      &lt;--- this is what you want!     &lt;--- this is what you want!     &lt;--- this is what you want!     &lt;--- this is what you want!     &lt;--- this is what you want!      len(response)             # number of total hits found by query (slow!)      &lt;--- this is what you want!     &lt;--- this is what you want!     &lt;--- this is what you want!     &lt;--- this is what you want!      list(s)[0]                # first result as a Python dictionary       list(response)[0]           # first result as a Python dictionary       response[0]                # first result as an ElasticSearch Hit       response[0].meta           # metadata associated with the Hit         response[0].meta.score     # score associated with the Hit           response[0].title          # title field value                       list(response)[1]['title']   ## second result's 'title' field value<;/pre>;<;br />;>;br />;The above code will return all documents matching your query, but it will not return any fields other than _id and _type unless they are explicitly requested via source(). To retrieve more fields, use source():<;br />;from django_elasticsearch_dsl import Search, Index, F ;from elasticsearch_dsl import Q ;import json ;import pprint ;pp = pprint.PrettyPrinter();pprint = pp.pprint ;s = Search().query('match', title='python').source([ 'title', 'body' ]) ;for i in range((len(s))): pprint((json.loads((str)(s[i]).replace("'", """)))) ;## or simply do it like below :## [{'body': 'Python and Django go together like peanut butter and jelly.'