From 45dd1cf520248cc5e412d07cc7fafcceeefeea6c Mon Sep 17 00:00:00 2001
From: Hironsan <light.tree.1.13@gmail.com>
Date: Thu, 16 Jul 2020 15:00:33 +0900
Subject: [PATCH] Fix redirect problem when documents is empty after filtering

---
 .../containers/annotation/BottomNavigator.vue          | 10 ++++++++--
 .../components/containers/annotation/Pagination.vue    |  2 +-
 frontend/layouts/annotation.vue                        |  2 +-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/frontend/components/containers/annotation/BottomNavigator.vue b/frontend/components/containers/annotation/BottomNavigator.vue
index 90ba110d..ed9e86ad 100644
--- a/frontend/components/containers/annotation/BottomNavigator.vue
+++ b/frontend/components/containers/annotation/BottomNavigator.vue
@@ -4,7 +4,10 @@
     absolute
     hide-on-scroll
   >
-    <v-btn @click="prevPage">
+    <v-btn
+      :disabled="value===1"
+      @click="prevPage"
+    >
       <span>Prev</span>
       <v-icon>mdi-chevron-left</v-icon>
     </v-btn>
@@ -24,7 +27,10 @@
       <v-icon>mdi-book-open-outline</v-icon>
     </v-btn> -->
 
-    <v-btn @click="nextPage">
+    <v-btn
+      :disabled="value===length || length===0"
+      @click="nextPage"
+    >
       <span>Next</span>
       <v-icon>mdi-chevron-right</v-icon>
     </v-btn>
diff --git a/frontend/components/containers/annotation/Pagination.vue b/frontend/components/containers/annotation/Pagination.vue
index e0106bbf..f97c33e3 100644
--- a/frontend/components/containers/annotation/Pagination.vue
+++ b/frontend/components/containers/annotation/Pagination.vue
@@ -43,7 +43,7 @@
       <template v-slot:activator="{ on }">
         <v-btn
           v-shortkey.once="['arrowright']"
-          :disabled="value===length"
+          :disabled="value===length || length===0"
           text
           fab
           small
diff --git a/frontend/layouts/annotation.vue b/frontend/layouts/annotation.vue
index 53e80858..7e812238 100644
--- a/frontend/layouts/annotation.vue
+++ b/frontend/layouts/annotation.vue
@@ -162,7 +162,7 @@ export default {
   watch: {
     total() {
       // To validate the range of page variable on reloading the annotation page.
-      if (this.page > this.total) {
+      if (this.total !== 0 && this.page > this.total) {
         this.$router.push({
           path: `/projects/${this.$route.params.id}/`
         })