fix(serverHandler): preserve QS context after mutate

Author: marjune163

src/serverHandler/mutate.go

@@ -40,6 +40,15 @@ func (h *handler) mutate(w http.ResponseWriter, r *http.Request, data *responseD
 		if qsIndex >= 0 {
 			reqPath = reqPath[:qsIndex]
 		}
+
+		ctxQsList := r.Form["contextquerystring"]
+		ctxQsListLen := len(ctxQsList)
+		if ctxQsListLen > 0 {
+			ctxQs := ctxQsList[ctxQsListLen-1]
+			if len(ctxQs) > 0 {
+				reqPath += ctxQs
+			}
+		}
 		http.Redirect(w, r, reqPath, http.StatusFound)
 	}
 }

src/tpl/frontend/index.html

@@ -32,6 +32,7 @@
 <div class="panel mkdir">
 	<form method="POST" action="{{.SubItemPrefix}}?mkdir">
 		<input type="text" autocomplete="off" name="name" class="name"/>
+		<input type="hidden" name="contextquerystring" value="{{$contextQueryString}}"/>
 		<input type="submit" value="{{.Trans.MkdirLabel}}" class="submit"/>
 	</form>
 </div>
@@ -46,6 +47,7 @@
 <div class="panel upload">
 	<form method="POST" action="{{.SubItemPrefix}}?upload" enctype="multipart/form-data">
 		<input type="file" name="file" multiple="multiple" class="file"/>
+		<input type="hidden" name="contextquerystring" value="{{$contextQueryString}}"/>
 		<button type="submit" class="submit">{{.Trans.UploadLabel}}</button>
 	</form>
 </div>
@@ -103,7 +105,7 @@
 			<span class="field size">{{.DisplaySize}}</span>
 			<span class="field time">{{.DisplayTime}}</span>
 		</a>
-		{{if and (not $isDownload) .DeleteUrl}}<form class="delete" action="{{$SubItemPrefix}}" onsubmit="return confirmDelete(this)"><input type="hidden" name="delete"/><input type="hidden" name="name" value="{{.DeleteUrl}}"/><button type="submit">x</button></form>{{end}}
+		{{if and (not $isDownload) .DeleteUrl}}<form class="delete" action="{{$SubItemPrefix}}" onsubmit="return confirmDelete(this)"><input type="hidden" name="delete"/><input type="hidden" name="name" value="{{.DeleteUrl}}"/><input type="hidden" name="contextquerystring" value="{{$contextQueryString}}"/><button type="submit">x</button></form>{{end}}
 	</li>
 	{{end}}
 </ul>