fix-489后端部分

models/topic.go

@@ -178,7 +178,7 @@ func (opts *FindTopicOptions) toConds() builder.Cond {
 	}
 
 	if opts.Keyword != "" {
-		cond = cond.And(builder.Like{"topic.name", opts.Keyword})
+		cond = cond.And(builder.Like{"topic.name", strings.ToLower(opts.Keyword)})
 	}
 
 	return cond