django-rest-framework-gis相关领域 [英] django-rest-framework-gis related field

问题描述

我有一个地理模型结构，其中多个事件可以具有相同的位置：

I have a geographical model structure where multiple events can have the same location:

class Event(models.Model):
    name = models.CharField(max_length=128, blank=True, null=True)
    location = models.ForeignKey('MarketLocation', null=True, blank=True)

class EventLocation(models.Model):
    location = models.PointField(srid=4326)

我正在使用django-rest-framework-gis提供的 GeoFeatureModelSerializer 输出单个JSON对象，但 PointField 被呈现为字符串而不是坐标对：

I am using the GeoFeatureModelSerializer provided by django-rest-framework-gis to output a single JSON object but the PointField is being rendered as a string instead of a coordinate pair:

所以它给了我：

"location": "POINT (-1.909 53.7094)"

代替：

  "point": {
        "type": "Point",
        "coordinates": [-123.0208, 44.0464],
   },

逻辑答案是定义领域在序列化器中：

The logical answer would be to define the field in the serializer:

geo_field = eventlocation__location

但是这似乎对输出没有任何影响，这使我认为它可能不起作用，但应该可以。有没有人做过这项工作，如果有的话如何做？

But that doesn't appear to make any difference to the output, which makes me think that it probably doesn't work but it probably should. Has anybody made this work and if so how?

推荐答案

我正在做类似的事情，但是使用MultiPolygon而不是Point。这是我的序列化器：

I'm doing something similar, but with MultiPolygon instead of Point. Here's my serializer:

class AreaSerializer(gis_serializers.GeoFeatureModelSerializer):

    class Meta:
        model = Area
        geo_field = "geom"

也许不需要

以下是我的序列化程序的存储库，如果有帮助的话：

Here's the repo for my Serializer, if that might help:

https://github.com。 com / kelvinn / alerted-us-web / blob / master / apps / alertdb / serializers.py

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