How Can I Effectively Handle Unstructured JSON with Arbitrary Keys in Go?

Handling Unstructured JSON with Go Structs (Duplicate)

In the context of handling unstructured JSON responses with arbitrary keys, it's possible to create Go structs to accommodate this dynamic data structure.

Consider the provided JSON response:

{
  "items": [
    {
      "name": "thing",
      "image_urls": {
        "50x100": [
          {
            "url": "http://site.com/images/1/50x100.jpg",
            "width": 50,
            "height": 100
          },
          {
            "url": "http://site.com/images/2/50x100.jpg",
            "width": 50,
            "height": 100
          }
        ],
        "200x300": [
          {
            "url": "http://site.com/images/1/200x300.jpg",
            "width": 200,
            "height": 300
          }
        ],
        "400x520": [
          {
            "url": "http://site.com/images/1/400x520.jpg",
            "width": 400,
            "height": 520
          }
        ]
      }
    }
  ]
}

To handle this data, a map can be used to represent the arbitrary keys, as suggested by the provided answer:

type Items map[string][]ImageUrl

Items is now a Go struct with a map as the field. The map's keys represent the dynamic image sizes, while the values are lists of ImageUrl structs, representing the individual image metadata.

This approach allows for easy access to the images based on their sizes. For example, to get the list of images for "50x100":

item := Items{"thing": {}}
item["50x100"]

This approach provides a flexible solution for handling unstructured JSON data with arbitrary keys, enabling you to unmarshal it directly into Go structs.

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