gf/g/util/gvalid/gvalid_check_map.go

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// Copyright 2017-2018 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package gvalid
import (
"github.com/gogf/gf/g/util/gconv"
"strings"
)
// 检测键值对参数Map
// rules参数支持 []string / map[string]string 类型,前面一种类型支持返回校验结果顺序(具体格式参考struct tag),后一种不支持;
// rules参数中得 map[string]string 是一个2维的关联数组第一维键名为参数键名第二维为带有错误的校验规则名称值为错误信息。
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func CheckMap(params interface{}, rules interface{}, msgs...CustomMsg) *Error {
// 将参数转换为 map[string]interface{}类型
data := gconv.Map(params)
if data == nil {
return newErrorStr("invalid_params", "invalid params type: convert to map[string]interface{} failed")
}
// 真实校验规则数据结构
checkRules := make(map[string]string)
// 真实自定义错误信息数据结构
customMsgs := make(CustomMsg)
// 返回的顺序规则
errorRules := make([]string, 0)
// 返回的校验错误
errorMaps := make(ErrorMap)
// 解析rules参数
switch v := rules.(type) {
// 支持校验错误顺序: []sequence tag
case []string:
for _, tag := range v {
name, rule, msg := parseSequenceTag(tag)
if len(name) == 0 {
continue
}
// 错误提示
if len(msg) > 0 {
ruleArray := strings.Split(rule, "|")
msgArray := strings.Split(msg, "|")
for k, v := range ruleArray {
// 如果msg条数比rule少那么多余的rule使用默认的错误信息
if len(msgArray) <= k {
continue
}
if len(msgArray[k]) == 0 {
continue
}
array := strings.Split(v, ":")
if _, ok := customMsgs[name]; !ok {
customMsgs[name] = make(map[string]string)
}
customMsgs[name].(map[string]string)[strings.TrimSpace(array[0])] = strings.TrimSpace(msgArray[k])
}
}
checkRules[name] = rule
errorRules = append(errorRules, name + "@" + rule)
}
// 不支持校验错误顺序: map[键名]校验规则
case map[string]string:
checkRules = v
}
// 自定义错误消息非必须参数优先级比rules参数中定义的错误消息更高
if len(msgs) > 0 && len(msgs[0]) > 0 {
if len(customMsgs) > 0 {
for k, v := range msgs[0] {
customMsgs[k] = v
}
} else {
customMsgs = msgs[0]
}
}
// 开始执行校验: 以校验规则作为基础进行遍历校验
value := (interface{})(nil)
// 这里的rule变量为多条校验规则不包含名字或者错误信息定义
for key, rule := range checkRules {
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// 如果规则为空,那么不执行校验
if len(rule) == 0 {
continue
}
value = nil
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if v, ok := data[key]; ok {
value = v
}
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if e := Check(value, rule, customMsgs[key], data); e != nil {
_, item := e.FirstItem()
// 如果值为nil|""并且不需要require*验证时,其他验证失效
if value == nil || gconv.String(value) == "" {
required := false
// rule => error
for k, _ := range item {
if _, ok := mustCheckRulesEvenValueEmpty[k]; ok {
required = true
break
}
}
if !required {
continue
}
}
if _, ok := errorMaps[key]; !ok {
errorMaps[key] = make(map[string]string)
}
for k, v := range item {
errorMaps[key][k] = v
}
}
}
if len(errorMaps) > 0 {
return newError(errorRules, errorMaps)
}
return nil
}