在golang中创建地图数组的地图

Question

I want to create a json in golang for which I need to first create map of the following:

{"inputs": [{"data": {"image": {"url": "SOME_URL"}}}]}

how to create this map on golang. (for now even hardcoded will also work for me)

Answer 1

In a struct:

type SomeData struct {
    Inputs []struct {
        Data struct {
            Image struct {
                URL string `json:"url"`
            } `json:"image"`
        } `json:"data"`
    } `json:"inputs"`
}

But if we wanted to be able to add things individually, AND be more idiomatic, we would do it like this:

type Image struct {
    URL string `json:"url"`
}

type Data struct {
    Image Image `json:"image"`
}


type Input struct {
    Data Data `json:"data"`
}

type SomeData struct {
    Inputs []Input `json:"inputs"`
}

Then, of course, we could always just use a map: someData := map[interface{}]interface{}{}

It really just depends on which route you'd like to go. I suggest the second one as it gives you better fine-grained tooling without any pesky dirty tricks or code-clutter.

Hope this helps!