From f3f064d064b5b7fbbc6ec5565e90d39e64a94ce9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=99=BD=E8=8C=B6=E6=B8=85=E6=AC=A2?=
 <go_developer@163.com>
Date: Sun, 13 Oct 2024 19:23:20 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=AF=E6=8C=81=E6=8F=90=E5=8F=96=E6=AF=8F?=
 =?UTF-8?q?=E4=B8=80=E9=A1=B9Item=E7=9A=84=E6=8C=87=E5=AE=9A=E5=AD=97?=
 =?UTF-8?q?=E6=AE=B5=E4=BD=9C=E4=B8=BAlist=E8=BF=94=E5=9B=9E?=
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---
 array.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/array.go b/array.go
index 9604988..6127d94 100644
--- a/array.go
+++ b/array.go
@@ -10,6 +10,7 @@ package wrapper
 import (
 	"encoding/json"
 	"git.zhangdeman.cn/zhangdeman/op_type"
+	"github.com/tidwall/gjson"
 	"reflect"
 	"strings"
 )
@@ -142,3 +143,24 @@ func (at *Array[Bt]) ToStringWithSplit(split string) StringResult {
 		Err:   nil,
 	}
 }
+
+// ExtraField 提取[]map/[]struct 中的指定字段, 并以list形式返回
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 19:00 2024/10/13
+func (at *Array[Bt]) ExtraField(fieldName string) *Array[any] {
+	if at.IsNil() {
+		return ArrayType[any]([]any{})
+	}
+	byteData, _ := json.Marshal(at.value)
+	res := make([]any, 0)
+	list := gjson.ParseBytes(byteData).Array()
+	for _, item := range list {
+		itemValue := item.Get(fieldName)
+		if itemValue.Exists() {
+			res = append(res, itemValue.Value())
+		}
+	}
+	return ArrayType(res)
+}