78 lines
2.6 KiB
Go
78 lines
2.6 KiB
Go
package helper
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import (
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"fmt"
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jsoniter "github.com/json-iterator/go"
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"github.com/yaoapp/kun/exception"
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)
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// ArrayPluckValue ArrayPluck 参数
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type ArrayPluckValue struct {
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Key string `json:"key"`
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Value string `json:"value"`
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Items []map[string]interface{} `json:"items"`
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}
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// ArrayPluck 将多个数据记录集合，合并为一个数据记录集合
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// columns: ["城市", "行业", "计费"]
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// pluck: {
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// "行业":{"key":"city", "value":"数量", "items":[{"city":"北京", "数量":32},{"city":"上海", "数量":20}]},
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// "计费":{"key":"city", "value":"计费种类", "items":[{"city":"北京", "计费种类":6},{"city":"西安", "计费种类":3}]},
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// }
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// return: [
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// {"城市":"北京", "行业":32, "计费":6},
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// {"城市":"上海", "行业":20, "计费":null},
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// {"城市":"西安", "行业":null, "计费":6}
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// ]
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func ArrayPluck(columns []string, pluck map[string]interface{}) []map[string]interface{} {
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if len(columns) < 2 {
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exception.New("ArrayPluck 参数错误, 应至少包含两列。", 400).Ctx(columns).Throw()
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}
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primary := columns[0]
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data := map[string]map[string]interface{}{}
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// 解析数据
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for name, value := range pluck { // name="行业", value={"key":"city", "value":"数量", "items":[{"city":"北京", "数量":32},{"city":"上海", "数量":20}]},
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arg := OfArrayPluckValue(value)
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for _, item := range arg.Items { // item = [{"city":"北京", "数量":32},{"city":"上海", "数量":20}]
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if v, has := item[arg.Key]; has { // arg.Key = "city"
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key := fmt.Sprintf("%#v", v) // key = `"北京"`
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val := item[arg.Value] // arg.Value = "数量", val = 32
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if _, has := data[key]; !has {
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data[key] = map[string]interface{}{} // {`"北京"`: {}}
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data[key][primary] = v // {`"北京"`: {"城市":"北京"}}
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}
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data[key][name] = val // {`"北京"`: {"城市":"北京", "行业":32}}
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}
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}
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}
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// 空值处理
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res := []map[string]interface{}{}
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for key := range data { // key = `"北京"`
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for name := range pluck { // name = "行业"
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if _, has := data[key][name]; !has {
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data[key][name] = nil
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}
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}
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res = append(res, data[key])
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}
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return res
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}
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// OfArrayPluckValue Any 转 ArrayPluckValue
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func OfArrayPluckValue(any interface{}) ArrayPluckValue {
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content, err := jsoniter.Marshal(any)
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if err != nil {
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exception.New("ArrayPluck 参数错误", 400).Ctx(err.Error()).Throw()
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}
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value := ArrayPluckValue{Items: []map[string]interface{}{}}
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err = jsoniter.Unmarshal(content, &value)
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if err != nil {
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exception.New("ArrayPluck 参数错误", 400).Ctx(err.Error()).Throw()
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}
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return value
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}
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