fix templates v3

templates/question/item.html

@@ -276,7 +276,7 @@
     <div class="uk-card-body uk-padding-remove-top">
       <hr>
       <h5 class="uk-text-center">{{t .LangCode "qitem.answerTitle"}}</h5>
-      <form id="tb-answer-form" method="post" action="/_/{{ .PageUser.Domain }}/{{ .Question.ID }}/answer{{ if .NextQuery }}?{{ .NextQuery }}{{ end }}" enctype="multipart/form-data">
+      <form id="tb-answer-form" method="post" action="{{ if .AnswerAction }}{{ .AnswerAction }}{{ else }}/_/{{ .PageUser.Domain }}/{{ .Question.ID }}/answer{{ end }}" enctype="multipart/form-data">
         {{ .CSRFTokenHTML }}
         <div class="uk-margin uk-text-center">
               <textarea name="answer" class="uk-textarea" rows="5" maxlength="{{ .Limits.AnswerContentLen }}"
@@ -436,7 +436,7 @@
         {{ if and .CanDelete .NextUnreadID }}
         <!-- 下一条未读：标记本条已读并跳转，会改状态，故用 POST 表单而非链接 -->
         <span class="tb-foot-sep" aria-hidden="true">·</span>
-        <form class="uk-display-inline" method="post" action="/_/{{ .PageUser.Domain }}/{{ .Question.ID }}/next-unread{{ if .NextQuery }}?{{ .NextQuery }}{{ end }}">
+        <form class="uk-display-inline" method="post" action="{{ if .NextUnreadAction }}{{ .NextUnreadAction }}{{ else }}/_/{{ .PageUser.Domain }}/{{ .Question.ID }}/next-unread{{ end }}">
           {{ .CSRFTokenHTML }}
           <button type="submit" class="uk-button uk-button-link" title="{{t .LangCode "qitem.nextUnreadTitle"}}">{{t .LangCode "qitem.nextUnread"}} ›</button>
         </form>

templates/question_action_test.go

@@ -0,0 +1,51 @@
+package templates
+
+import (
+	"strings"
+	"testing"
+	"time"
+)
+
+// 从后台进入单题页时，表单 action 必须原样带上筛选参数。
+// 回归点：曾经写成 action="...?{{ .NextQuery }}"，html/template 会把查询片段整体编码，
+// = 和 & 变成 %3d / %26，服务端解析不出 from，跳转后「返回」掉回箱主页（线上实测过）。
+func TestOwnerFormsKeepAdminQuery(t *testing.T) {
+	data := publicBaseData()
+	data["CanDelete"] = true
+	data["IsOwnPage"] = true
+	data["NextUnreadID"] = uint(2)
+	data["BackFrom"] = "admin"
+	data["BackTo"] = "/user/questions?from=admin&sort=new"
+	data["AnswerAction"] = "/_/tester/1/answer?from=admin&sort=new"
+	data["NextUnreadAction"] = "/_/tester/1/next-unread?from=admin&sort=new"
+	data["Question"] = map[string]interface{}{
+		"ID": 1, "Content": "测试提问", "Answer": "",
+		"CreatedAt": time.Now(), "UpdatedAt": time.Now(),
+		"IsPrivate": false, "IsPinned": false, "IsRead": false,
+		"Token": "abc123", "ReceiveReplyEmail": "",
+	}
+	data["QuestionToken"] = "abc123"
+	data["AskUploadImages"] = []interface{}{}
+	data["AnswerUploadImages"] = []interface{}{}
+	data["FollowUps"] = []interface{}{}
+	data["CanFollowUp"] = false
+	data["IsQuestioner"] = false
+
+	out, err := renderToString(t, "question/item", data)
+	if err != nil {
+		t.Fatalf("render question/item: %v", err)
+	}
+
+	for _, want := range []string{
+		`action="/_/tester/1/answer?from=admin&sort=new"`,
+		`action="/_/tester/1/next-unread?from=admin&sort=new"`,
+		`href="/user/questions?from=admin&sort=new"`,
+	} {
+		if !strings.Contains(out, want) {
+			t.Fatalf("渲染结果缺少 %s", want)
+		}
+	}
+	if strings.Contains(strings.ToLower(out), "%3d") || strings.Contains(out, "%26") {
+		t.Fatal("action 里的 = / & 被 percent-encode 了，服务端会解析不出 from=admin")
+	}
+}