关注取关话题

application/api/controller/Topichub.php

@@ -26,9 +26,42 @@ class Topichub extends Api
         $info = Db::name('topic_hub')->where(['status'=>1,'id'=>$id])->find();
         $info = info_domain_image($info,['image']);
 
+        //是否关注
+        $is_follow = Db::name('user_follow_topic')->where(['uid'=>$this->auth->id,'topic_id'=>$id])->find();
+        $info['is_follow'] = !empty($is_follow) ? 1 : 0;
+
         $this->success('success',$info);
     }
 
+    //关注某人
+    public function follow_one(){
+        $topic_id = input('topic_id',0);
+        if(!$topic_id){
+            $this->error(__('Invalid parameters'));
+        }
+
+        $topic_hub = Db::name('topic_hub')->find($topic_id);
+        if(empty($topic_hub)){
+            $this->error('此话题不存在');
+        }
+
+        $map = [
+            'uid' => $this->auth->id,
+            'topic_id' => $topic_id,
+        ];
+
+        $check = Db::name('user_follow_topic')->where($map)->find();
+        if($check){
+            //取关
+            $rs = Db::name('user_follow_topic')->where($map)->delete();
+            $this->success('操作成功');
+        }
+
+        $id = Db::name('user_follow_topic')->insertGetId($map);
+
+        $this->success('操作成功',$id);
+    }
+