如何通过Strongloop环回中的rest调用获取特定的属性名称

Question

I am having students model in loopback which is accessible via rest using this url. /api/students rest call gives all the student data but I want to get only the registration numbers (regno) of students. Like in sql (SELECT regno FROM students ). how I should filter the above rest call to get only the registration numbers of students.

Answer 1

Use the fields filter.

?filter[fields][regno]=true

https://docs.strongloop.com/display/public/LB/Fields+filter

Answer 2

?filter={"fields":"regno"}

如果要获得多列

?filter={"fields":["regno","column2","column3",....]}