如何返回GoogleAPI搜索结果的距离？

Question

以下是我如何获得所需距离内的所有物品：

query_string = 'distance(LocationCoord, geopoint(35.2, 40.5)) < 1000'
query_options = search.QueryOptions(
    returned_fields=['ID', 'GUID', 'LocationCoord', '**distance()**']
)
query = search.Query(query_string=query_string, options=query_options)
res = index.search(query)

我如何在搜索结果中实际返回距离

Answer 1

为此，您可以添加一个FieldExpression：

query_string = 'distance(LocationCoord, geopoint(35.2, 40.5)) < 1000'
expression = search.FieldExpression(name='distance', expression='distance(LocationCoord, geopoint(35.2, 40.5))')

query_options = search.QueryOptions(
    returned_fields=['ID', 'GUID', 'LocationCoord']
    returned_expressions=[expression],
)

query = search.Query(query_string=query_string, options=query_options)
res = index.search(query)