地理 Feed¶
GeoDjango has its own Feed subclass that may embed location
information in RSS/Atom feeds formatted according to either the Simple
GeoRSS or W3C Geo standards. Because GeoDjango's syndication API is a
superset of Django's, please consult Django's syndication documentation for details on general usage.
例如¶
API 参考¶
Feed 子类¶
- class Feed[source]¶
除了
django.contrib.syndication.views.Feed基类提供的方法之外,GeoDjango 的Feed类还提供了以下覆盖方法。请注意,可以以多种方式进行这些覆盖操作:from django.contrib.gis.feeds import Feed class MyFeed(Feed): # First, as a class attribute. geometry = ... item_geometry = ... # Also a function with no arguments def geometry(self): ... def item_geometry(self): ... # And as a function with a single argument def geometry(self, obj): ... def item_geometry(self, item): ...
- geometry(obj)¶
使用
get_object()返回的对象,并返回 feed 的几何形状。通常情况下,这是一个GEOSGeometry实例,或者可以是一个表示点或矩形框的元组。例如:class ZipcodeFeed(Feed): def geometry(self, obj): # Can also return: `obj.poly`, and `obj.poly.centroid`. return obj.poly.extent # tuple like: (X0, Y0, X1, Y1).
- item_geometry(item)¶
将此设置为返回 feed 中每个 item 的几何形状。这可以是一个
GEOSGeometry实例,或者是表示点坐标或边界框的元组。例如:class ZipcodeFeed(Feed): def item_geometry(self, obj): # Returns the polygon. return obj.poly