Python Django Haystack未返回精确查询

我正试图将Django haystack与Elasticsearch搜索结果结合起来，使其准确无误

我现在遇到的问题是，当用户尝试“墨西哥”查询时，搜索结果也会返回“墨尔本”的交易，这远不是用户友好的

有人能帮我解决这个问题吗

这是我到目前为止尝试过的，但没有好结果：

我的表格.py

from haystack.forms import FacetedSearchForm
from haystack.inputs import Exact


class FacetedProductSearchForm(FacetedSearchForm):

    def __init__(self, *args, **kwargs):
        data = dict(kwargs.get("data", []))
        self.ptag = data.get('ptags', [])
        self.q_from_data = data.get('q', '')
        super(FacetedProductSearchForm, self).__init__(*args, **kwargs)

    def search(self):
        sqs = super(FacetedProductSearchForm, self).search()

        # Ideally we would tell django-haystack to only apply q to destination
        # ...but we're not sure how to do that, so we'll just re-apply it ourselves here.
        q = self.q_from_data
        sqs = sqs.filter(destination=Exact(q))

        print('should be applying q: {}'.format(q))
        print(sqs)

        if self.ptag:
            print('filtering with tags')
            print(self.ptag)
            sqs = sqs.filter(ptags__in=[Exact(tag) for tag in self.ptag])

        return sqs

我的搜索索引.py

import datetime
from django.utils import timezone
from haystack import indexes
from haystack.fields import CharField

from .models import Product


class ProductIndex(indexes.SearchIndex, indexes.Indexable):
    text = indexes.EdgeNgramField(
        document=True, use_template=True,
        template_name='search/indexes/product_text.txt')
    title = indexes.CharField(model_attr='title')
    description = indexes.EdgeNgramField(model_attr="description")
    destination = indexes.EdgeNgramField(model_attr="destination") #boost=1.125
    link = indexes.CharField(model_attr="link")
    image = indexes.CharField(model_attr="image")

    # Tags
    ptags = indexes.MultiValueField(model_attr='_ptags', faceted=True)

    # for auto complete
    content_auto = indexes.EdgeNgramField(model_attr='destination')

    # Spelling suggestions
    suggestions = indexes.FacetCharField()

    def get_model(self):
        return Product

    def index_queryset(self, using=None):
        """Used when the entire index for model is updated."""
        return self.get_model().objects.filter(timestamp__lte=timezone.now())

我的模特

class Product(models.Model):
    destination = models.CharField(max_length=255, default='')
    title = models.CharField(max_length=255, default='')
    slug = models.SlugField(unique=True, max_length=255)
    description = models.TextField(max_length=2047, default='')
    link = models.TextField(max_length=500, default='')

    ptags = TaggableManager()

    image = models.ImageField(max_length=500, default='images/zero-image-found.png')
    timestamp = models.DateTimeField(auto_now=True)

    def _ptags(self):
        return [t.name for t in self.ptags.all()]

    def get_absolute_url(self):
        return reverse('product',
                       kwargs={'slug': self.slug})

    def save(self, *args, **kwargs):
        if not self.id:
            self.slug = slugify(self.title)
        super(Product, self).save(*args, **kwargs)


    def __str__(self):
        return self.destination

以及我的观点。py

from haystack.generic_views import FacetedSearchView as BaseFacetedSearchView
from .forms import FacetedProductSearchForm

class FacetedSearchView(BaseFacetedSearchView):

    form_class = FacetedProductSearchForm
    facet_fields = ['ptags']
    template_name = 'search_result.html'
    paginate_by = 30
    context_object_name = 'object_list'

---

谢谢。

您的问题在于使用

dict.get

self.q_from_data = data.get('q', [''])[0]

比如说

data.get('q')  # This will return the string "Mexico"
data.get('q')[0]  # This will return the first letter "M"

线路应该是

self.q_from_data = data.get('q', '')

---

我刚刚找到了这个问题的解决办法。如果你想避免在同一个问题上悬赏而失去任何声誉，请倾听

基本上，我必须将search_index.py文档中的原始

destination

字段替换为以下行：

由此：

destination=index.EdgeNgramField（model\u attr=“destination”）

---

对此：

destination=index.CharField（model\u attr=“destination”）

谢谢您的快速回答@lain，我马上就要尝试了。之后我应该运行任何命令吗？像python manage.py update\u indexy一样，您只需要重新加载应用程序，然后在MelbourneTry中调用

super（）