diff --git a/src/service/index.ts b/src/service/index.ts
index 24ab353..373362a 100644
--- a/src/service/index.ts
+++ b/src/service/index.ts
@@ -1,5 +1,15 @@
 import process from 'process';
 
+/**
+ * State machine for request
+ *
+ * @example
+ *
+ * let former = this.state.rs;
+ * this.setState({
+ *   rs: former.trans(true),
+ * })
+ */
 export class RequestState {
   loading: boolean;
   success: boolean;
@@ -7,6 +17,16 @@ export class RequestState {
     this.loading = true;
     this.success = false;
   }
+
+  trans(success: boolean): RequestState {
+    if (this.loading) {
+      this.loading = false;
+      this.success = success;
+    } else {
+      console.error('calling trans on not loading state');
+    }
+    return this;
+  }
 }
 
 /**
diff --git a/src/service/ticketsInfo.ts b/src/service/ticketsInfo.ts
index 554b4ab..a74edd7 100644
--- a/src/service/ticketsInfo.ts
+++ b/src/service/ticketsInfo.ts
@@ -13,12 +13,10 @@ export function getTicketInfo(that: TicketDetail, id: number) {
     },
   })
     .then(res => {
+      let former = that.state.rs;
       if (!res.data.success) {
         that.setState({
-          rs: {
-            loading: false,
-            success: false,
-          },
+          rs: former.trans(false),
         });
       } else {
         const data = res.data.data;
@@ -44,20 +42,15 @@ export function getTicketInfo(that: TicketDetail, id: number) {
         that.setState({
           ticketInfo: ticketDetail,
           notes: notes,
-          rs: {
-            loading: false,
-            success: true,
-          },
+          rs: former.trans(true),
         });
       }
     })
     .catch(reason => {
+      let former = that.state.rs;
       that.setState({
-        rs: {
-          loading: false,
-          success: false,
-        },
+        rs: former.trans(false),
       });
-      console.log(reason);
+      console.error(reason);
     });
 }