Django对接elasticsearch实现全文检索的示例代码

pip install drf-haystack 
pip install elasticsearch 
pip install djangorestframework

INSTALLED_APPS = 
[
'app.apps.AppConfig', 
'haystack', 
'rest_framework'
]

HAYSTACK_CONNECTIONS = { 
'default':    {
            'ENGINE':'haystack.backends.elasticsearch_backend.ElasticsearchSearchEngine', 
            'URL': 'http://127.0.0.1:9200/', # 此处为elasticsearch运行的服务器ip地址，端口号固定为9200 
            'INDEX_NAME': 'test', # 指定elasticsearch建立的索引库的名称 
            }, 
            } 
# 当添加、修改、删除数据时，自动生成索引 
HAYSTACK_SIGNAL_PROCESSOR = 'haystack.signals.RealtimeSignalProcessor' 
# 指定搜索结果每页的条数 
# HAYSTACK_SEARCH_RESULTS_PER_PAGE = 1

from django.db import models 
class Es(models.Model): 
    name=models.CharField(max_length=32)
    desc=models.CharField(max_length=32)

# 索引模型类的名称必须是 模型类名称 + Index 
from haystack import indexes 
from .models import Es 
class EsIndex(indexes.SearchIndex, indexes.Indexable): 
    text = indexes.CharField(document=True, use_template=True) 
    def get_model(self): 
    """返回建立索引的模型类""" 
        return Es 
    def index_queryset(self, using=None): 
    """返回要建立索引的数据查询集""" 
        return self.get_model().objects.all()

{{ object.name }} 
{{ object.desc }}

python manage.py rebuild_index   #数据库有多少条数据，全部会被同步到es中

from drf_haystack.serializers 
import HaystackSerializer 
from rest_framework.serializers 
import ModelSerializer from app 
import models 
from app.search_indexes import EsIndex 
class EsSerializer(ModelSerializer): 
    class Meta: 
        model=models.Es 
        fields='__all__' 
class EsIndexSerializer(HaystackSerializer): 
     object = EsSerializer(read_only=True) # 只读,不可以进行反序列化 
     class Meta: 
        index_classes = [EsIndex]# 索引类的名称 
        fields = ('text', 'object')# text 由索引类进行返回, object 由序列化类进行返回,第一个参数必须是text

from drf_haystack.viewsets 
import HaystackViewSet 
from app.models import Book 
from app.serializers import EsIndexSerializer 
class EsSearchView(HaystackViewSet): 
    index_models = [Es] 
    serializer_class = EsIndexSerializer

from django.conf.urls 
import url from django.contrib 
import admin 
from rest_framework import routers 
from app.views import EsSearchView 
    router = routers.DefaultRouter() 
    router.register("book/search", EsSearchView, base_name="book-search") 
    urlpatterns = [ url(r'^admin/', admin.site.urls), ] 
    urlpatterns += router.urls