Django Haystack按距离顺序由Elasticsearch后端排序，而不是geo_point字段错误 [英] Django Haystack order by distance by Elasticsearch backend, not a geo_point field error

问题描述

我使用的是django 1.4，django-haystack 2.0和Elasticsearch 0.19.1我有一个这样的SearchIndex：

 从haystack导入索引
从core.models import Project 
 
类ProjectIndex（indexes.RealTimeSearchIndex，indexes.Indexable）：
 text = indexes.CharField（document = True，use_template =真的）
 location = indexes.LocationField（model_attr ='get_location'）
 
 def get_model（self）：
 return Project 
  / pre> 
 
 
和类似的项目模型：
  class Project BaseModel）：
 name = models.CharField（_（u'ProjeAdı'），max_length = 50）
 latitude = models.FloatField（）
 longitude = models.FloatField（）
 
 def get_location（self）：
＃记住，经度FIRST！ 
返回点（self.longitude，self.latitude）
  
所以我想查询项目对象按距离特定坐标从近到远：
  .... 
 location = Point（project.longitude， project.latitude）
 projects = SearchQuerySet（）。models（Project）.distance（'location'，location）.order_by（'distance'）
  
但是我收到此错误：
 
 
 
无法使用'查询Elasticsearch： '：返回的非OK状态代码（500）包含u'SearchPhaseExecutionException [无法执行phase [query]，total failure; shardFailures {[jmUkmHkDTX-bo9DhFJdtSw] [skp] [2]：QueryPhaseExecutionException [[skp] [2]：query [filtered（ConstantScore（NotDeleted（cache（QueryWrapperFilter（django_ct：core.project）））） - > cache ：modelResult）]，从[0]，size [10]，sort []：查询失败[执行主查询失败]];嵌套：ElasticSearchIllegalArgumentException [field [location]不是geo_point字段]; } {[jmUkmHkDTX-bo9DhFJdtSw] [skp] [4]：QueryPhaseExecutionException [[skp] [4]：query [filtered（ConstantCount（NotDeleted（cache（QueryWrapperFilter（django_ct：core.project）））） - > cache ：modelResult）]，从[0]，size [10]，sort []：查询失败[执行主查询失败]];嵌套：ElasticSearchIllegalArgumentException [field [location]不是geo_point字段]; 
 
 
 
有什么问题？
解决方案
可能是您的位置字段的类型方面被映射错误。这可能是由您用于映射的api引起的。映射中的某些方面可以更改，但不能改变字段的类型方面。因此，您必须使用geo_point类型的位置字段创建新的映射，并重新索引您的文档。
 
I'm using django 1.4, django-haystack 2.0 and Elasticsearch 0.19.1 I have an SearchIndex like that:
from haystack import indexes
from core.models import Project

class ProjectIndex(indexes.RealTimeSearchIndex, indexes.Indexable):
    text = indexes.CharField(document=True, use_template=True)
    location = indexes.LocationField(model_attr='get_location')

    def get_model(self):
        return Project
and Project model like that:
class Project(BaseModel):
    name = models.CharField(_(u'Proje Adı'), max_length=50)
    latitude = models.FloatField()
    longitude = models.FloatField()

    def get_location(self):
        # Remember, longitude FIRST!
        return Point(self.longitude, self.latitude)
So I want to query Project objects by distance specific coordinate from near to far:
....
location = Point(project.longitude, project.latitude)
projects = SearchQuerySet().models(Project).distance('location', location).order_by('distance')
But I'm getting this error:

Failed to query Elasticsearch using ':': Non-OK status code returned (500) containing u'SearchPhaseExecutionException[Failed to execute phase [query], total failure; shardFailures {[jmUkmHkDTX-bo9DhFJdtSw][skp][2]: QueryPhaseExecutionException[[skp][2]: query[filtered(ConstantScore(NotDeleted(cache(QueryWrapperFilter(django_ct:core.project)))))->cache(_type:modelresult)],from[0],size[10],sort[]: Query Failed [Failed to execute main query]]; nested: ElasticSearchIllegalArgumentException[field [location] is not a geo_point field]; }{[jmUkmHkDTX-bo9DhFJdtSw][skp][4]: QueryPhaseExecutionException[[skp][4]: query[filtered(ConstantScore(NotDeleted(cache(QueryWrapperFilter(django_ct:core.project)))))->cache(_type:modelresult)],from[0],size[10],sort[]: Query Failed [Failed to execute main query]]; nested: ElasticSearchIllegalArgumentException[field [location] is not a geo_point field]; }]'.

What is wrong?
解决方案
Probably the "type" aspect of your location field is mapped wrong. This could be caused by the api that you used for mapping. Some aspects in a mapping can be changed, but not the "type" aspect of a field. So you'll have to create a new mapping with location field in geo_point type, and reindex your docs.

                        
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