Go Tree structure in

I have a little issue creating this kind of tree structure in go.

{
"uuid": "uuid1",
"label": "label1",
"children": [{
    "uuid": "uuid2",
    "label": "label2",
     "children": [{
        "uuid": "uuid3",
        "label": "label3",
            "children": [{
                "uuid": "uuid5",
                "label": "label5",
            },{
                "uuid": "uuid7",
                "label": "label7",
            }]
     },
     "uuid": "uuid4",
     "label": "label4",
            "children": [{
                "uuid": "uuid6",
                "label": "label6",
            }]
     }]
}]}

I tried it with maps, but I have a problem creating it. The map I came up with looked like this:

 Tree := make(map[string]map[string]map[string][]interface{})

The data would come from a database where every row looks something like this:

I hope someone can help me with this, got some headache from that already.

As suggested by Jason, your json tree structure is wrong. I would suggest using online tools for validating json's.

Apart from that, All you need to do here is to define a struct for your tree structure like below. Here is the working example on playground with your json document.

type Node struct {
	UUID      string `json:"uuid"`
	Label     string `json:"label"`
	Childrens []Node `json:"children"`
}

We prefer using structs over maps as they are typesafe. Go being a strongly typed language, using structs is more idiomatic.

Well，I think you paste the text of tree structure is error。 I adjust it，like this：

{
  "uuid": "uuid1",
  "label": "label1",
  "children": [
    {
      "uuid": "uuid2",
      "label": "label2",
      "children": [
        {
          "uuid": "uuid3",
          "label": "label3",
          "children": [
            {
              "uuid": "uuid4",
              "label": "label4"
            }
          ]
        }
      ]
    }
  ]
}

I offer to use Go Struct, not map。

Before two months，I found a nice website, which can help to convert to Go struct from JSON format struct。

Before Convert：

type AutoGenerated struct {
	UUID     string `json:"uuid"`
	Label    string `json:"label"`
	Children []struct {
		UUID     string `json:"uuid"`
		Label    string `json:"label"`
		Children []struct {
			UUID     string `json:"uuid"`
			Label    string `json:"label"`
			Children []struct {
				UUID  string `json:"uuid"`
				Label string `json:"label"`
			} `json:"children"`
		} `json:"children"`
	} `json:"children"`
}