fix blank topic (#3948)
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				| @ -2197,7 +2197,11 @@ function initTopicbar() { | ||||
|                 alert(res.message); | ||||
|             } else { | ||||
|                 viewDiv.children(".topic").remove(); | ||||
|                 if (topics.length == 0) { | ||||
|                     return | ||||
|                 } | ||||
|                 var topicArray = topics.split(","); | ||||
|                  | ||||
|                 var last = viewDiv.children("a").last(); | ||||
|                 for (var i=0;i < topicArray.length; i++) { | ||||
|                     $('<div class="ui green basic label topic" style="cursor:pointer;">'+topicArray[i]+'</div>').insertBefore(last) | ||||
|  | ||||
| @ -21,7 +21,11 @@ func TopicPost(ctx *context.Context) { | ||||
| 		return | ||||
| 	} | ||||
| 
 | ||||
| 	topics := strings.Split(ctx.Query("topics"), ",") | ||||
| 	var topics = make([]string, 0) | ||||
| 	var topicsStr = strings.TrimSpace(ctx.Query("topics")) | ||||
| 	if len(topicsStr) > 0 { | ||||
| 		topics = strings.Split(topicsStr, ",") | ||||
| 	} | ||||
| 
 | ||||
| 	err := models.SaveTopics(ctx.Repo.Repository.ID, topics...) | ||||
| 	if err != nil { | ||||
|  | ||||
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