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How to Unmarshal JSON into Go Structures with Custom Field Names?

Linda Hamilton
Release: 2024-12-22 13:47:18
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How to Unmarshal JSON into Go Structures with Custom Field Names?

Unmarshalling JSON into Go Structures with Custom Field Names

As a beginner in Go, you may encounter challenges when attempting to unmarshal JSON into custom structures. Let's address the specific issue you're facing with unmarshalling a JSON object into a map[string]Context.

The Issue:

You are unable to properly unmarshal the JSON into the map[string]Context. Instead, you're getting a map[intro] with a Context struct where all fields are initialized to nil or empty strings.

The Solution:

To correctly unmarshal JSON into custom structures, you need to ensure that the fields in those structures are exported. In Go, exported fields begin with a capital letter. Let's modify the definitions of Context and Option accordingly:

type Context struct {
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