[英]How to integrate elasticsearch with Django
我是elasticsearch
新手。 我想將我的MySQL Data
存儲到我的Django App
elasticsearch
中。 但是我不知道從哪里開始。 我看過Haystack教程,已經將數據索引到了elasticsearch
但是如何查詢該數據呢?
models.py
import json
from django.db import models
from django.contrib import admin
#------------------------------------------------------------------------------
class scrapedData (models.Model):
""" This a model for scraped data collected by eScraper"""
productMRP = models.FloatField() # Product MRP
image_urls = models.TextField() # Images URL's for image pipeline for downloading
productSite = models.URLField() # Product web-site URL
productDesc = models.TextField() # Product Description
image_paths = models.TextField() # Product images path on the local machine
productImage = models.TextField() # Product image URL's
productTitle = models.TextField() # Product title
productPrice = models.FloatField() # Product discounted price
hasVariants = models.BooleanField() # Product variants like : colors or sizes, True is if product has variants, False otherwise
productCategory = models.TextField() # Product category
availability = models.BooleanField() # Product availability ,True if product is in stock, False otherwise
productSubCategory = models.TextField() # Product sub-category
currency = models.CharField(max_length=3) # Product price currency
productURL = models.URLField(max_length=500) # Product page URL
updatedAt = models.DateTimeField(auto_now=True) # Time at which product is updated
createdAt = models.DateTimeField(auto_now_add=True) # Time at which product is created
class scrapedDataAdmin(admin.ModelAdmin):
"""scrapedData admin class"""
list_display = ('productTitle','productSite','updatedAt','createdAt',
'product_URL','product_Image','productMRP','productPrice','currency',
'productDesc','productCategory','availability',
'hasVariants','productSubCategory','image_paths','image_urls'
)
ordering = ('productSite',)
admin.site.register(scrapedData,scrapedDataAdmin)
seach_indexes.py
from haystack import indexes
from eScraperInterfaceApp.models import scrapedData
#------------------------------------------------------------------------------
class scrapedDataIndex(indexes.SearchIndex, indexes.Indexable):
"""
This is a index class for scrapedData model
"""
productMRP = indexes.CharField()
productDesc = indexes.CharField()
productTitle = indexes.CharField()
productPrice = indexes.CharField()
productCategory = indexes.CharField()
productSubCategory = indexes.CharField()
text = indexes.CharField(document=True, use_template=False) # This field is the primary field for searching within
def get_model(self):
"""
This is a haystack method to get model name for the APP
"""
return scrapedData
def index_queryset(self, using=None):
"""Used when the entire index for model is updated."""
return self.get_model().objects.filter()
然后我使用以下命令將數據索引到elasticsearch中: python manage.py rebuild_index
當我嘗試:
from pprint import pprint
from haystack.query import SearchQuerySet
all_results = SearchQuerySet().all()
pprint(all_results)
輸出為:
[
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'742')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'747')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'754')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'759')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'761')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'766')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'773')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'778')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'780')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'785')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'792')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'797')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'800')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'805')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'812')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'817')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'824')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'829')>,
<SearchResult: eScraperInterfaceApp.scrapeddata (pk=u'831')>,
'...(remaining elements truncated)...'
]
我想使用elasticsearch作為我網站的后端。 因此,我需要根據productDesc,MRP,價格等執行不同類型的查詢。
我怎么做?
由於SearchQuerySet().all()
返回結果,因此您似乎已經走了很多路。 現在,您只需要添加一個過濾器即可僅獲取所需的結果。
嘗試這個:
SearchQuerySet().filter(title="AN EXISTING TITLE")
並查看是否獲得該標題的結果。
有關更多信息,請檢查docs: searchqueryset_api 。
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