Django搜索:设置Haystack_Default_Operator =' OR'没有效果

时间:2014-09-06 01:14:41

标签: python django django-haystack

我正在使用Haystack和Whoosh用我正在建造的django网站进行搜索。我想在搜索条件上使用OR运算符(例如“搜索字符串”将查找带有文本“搜索”或“字符串”而不是“搜索”和“字符串”的对象)

这似乎非常简单,因为haystack允许您通过在settings.py文件中设置HAYSTACK_DEFAULT_OPERATOR = 'OR'来覆盖默认的“AND”运算符。

不幸的是,将此添加到我的settings.py中没有任何效果。我在stackoverflow上找到了一些对此行为的切向引用,但没有解决方案。我也找到了issue posted on github,但自去年以来一直没有评论或分类。

我可能做错了,所以我想在这里发帖,看看是否有解决方案。没有人,我有点被困!

我在settings.py中的干草堆设置:

HAYSTACK_CONNECTIONS = {
    'default': {
        'ENGINE': 'haystack.backends.whoosh_backend.WhooshEngine',
        'PATH': os.path.join(os.path.dirname(__file__), 'whoosh_index'),
    },
}
HAYSTACK_DEFAULT_OPERATOR = 'OR'
HAYSTACK_SIGNAL_PROCESSOR = 'haystack.signals.RealtimeSignalProcessor'

我的观点:

from haystack import views as hsviews

def search_test(request):
    return hsviews.basic_search(request)

我的search_indexes.py文件:

import datetime
from haystack import indexes
from myApp.models import MyModel
from django.contrib.auth.models import User

class MyModelIndex(indexes.SearchIndex, indexes.Indexable):
    text = indexes.NgramField(document=True, use_template= True)
    isPublic = indexes.BooleanField(model_attr='isPubliclyVisible')
    brand = indexes.CharField(model_attr='brand')
    model = indexes.CharField(model_attr='model')
    owner = indexes.CharField(model_attr='owner')
    owner_username = indexes.CharField()
    obj_type = indexes.CharField()

    def get_model(self):
        return MyModel

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

    def prepare_owner_username(self, obj):
        return obj.owner.user.username

    def prepare_obj_type(self,obj):
        return 'MyModel'

我确实找到了这个workaround(我尚未对我的解决方案进行过测试/思考),但我认为如果我/我们做错了什么,这保证了它自己的问题。

1 个答案:

答案 0 :(得分:0)

我建议您编写自己的视图,以便更好地控制搜索查询的执行方式,而不是使用Haystack内置的 basic_search 函数。这样,您可以通过扩展视图或自定义搜索查询功能来处理更复杂的搜索,此外还可以更轻松地进行测试。

例如,您可以构建单独的SearchQuerySet过滤器来执行您正在搜索的每个关键字,然后" OR"他们在一起,像这样:

def get_query(request):
    """
    This function retrieves any query terms (e.g q=search+term)
    from the request object.

    :param request: request object
    :returns: query terms as a list (split on whitespace)
    """
    query = None
    qs_keyword = 'q'
    if (qs_keyword in request.GET) and request.GET[qs_keyword].strip():
        query_string = request.GET[qs_keyword]
        query = query_string.split()
    return query

def perform_query(request):
    """
    This is a helper function to perform the actual query.

    You can extend this to handle more complicated searches using AND,
    OR, boolean qualifiers, etc.

    :param request: request object
    :returns: SearchQuerySet results
    """
    query = get_query(request)
    if not query:
        results = EmptySearchQuerySet()
    else:
        results = SearchQuerySet()
        for search_term in query:
            # you can use the "|" (or) operator
            results |= results.filter(content=search_term)
            # or else use "filter_or"
            # results = results.filter_or(content=search_term)
    return results

def your_search_view(request, *args, **kwargs):
    """
    This is your search view to process the query and display your results.
    """
    # call "perform_query" to do the actual search
    results = perform_query(request)

    # do the rest of your view processing ...
    return render_to_response(etc.)