更新

app/Services/DynamicService.php

@@ -22,13 +22,21 @@ class DynamicService
 {
     //话题列表
     public function tag_list($keyword,$type=0){
-        $data = DB::table("dynamic_tag")
-            ->where("title","like","%{$keyword}%")
-            ->where("type",$type)
+        $query = DB::table("dynamic_tag");
+        if(!empty($keyword)){
+            $query = $query->where("title","like","%{$keyword}%");
+        }
+        $query =  $query->where("type",$type)
             ->orderBy("hot","desc")
             ->limit(20)
             ->get();
-        return $data;
+//        $data = DB::table("dynamic_tag")
+//            ->where("title","like","%{$keyword}%")
+//            ->where("type",$type)
+//            ->orderBy("hot","desc")
+//            ->limit(20)
+//            ->get();
+        return $query;
     }
 
     /**