在golang中编辑继承属性的标签？

type Parent struct {
    Name string `json:"parent_name"`
}

type Child struct {
    Parent
}

Say I have two structs Parent and Child. I have two endpoints that read json using those two structs.

// Sample Parent endpoint payload
{
    "parent_name": "Parent Name"
}

// Sample Child endpoint payload
{
    "child_name": "Child Name"
}

Both structs are being used to store similar data, but the json key is different for each endpoint payload. Is there a way to edit the json tag on the Child struct such that Child still inherits from Parent, but the tag is now json:"child_name"?

Go doesn't have inheritance, only composition. Instead of parent-child relationship think about it in terms of part-whole.

In your example you can use a mix of json:",omitempty" tag and "field shadowing" to get the result:

type Parent struct {
    Name string `json:"parent_name,omitempty"`
}

type Child struct {
    Parent
    Name string `json:"child_name"`
}

Playground: http://play.golang.org/p/z72dCKOhYC.

But this still misses the point (and breaks if child.Parent.Name isn't empty). If you're going to "override" a field in every struct that embeds Parent, why is it even there in the first place?