Fixed error when displaying board form

app/assets/javascripts/boards/components/board_new_form.js

@@ -51,7 +51,7 @@
       },
       submitDisabled() {
         if (this.currentPage !== 'milestone') {
-          return board.name === '';
+          return this.board.name === '';
         }
 
         return false;

app/assets/javascripts/boards/components/boards_selector.js

@@ -57,7 +57,7 @@ require('./board_new_form');
         return this.boards.length > 1;
       },
       title() {
-        if (this.currentPage === 'edit') {
+        if (this.currentPage === 'edit' || this.currentPage === 'milestone') {
           return 'Edit board';
         } else if (this.currentPage === 'new') {
           return 'Create new board';

app/views/projects/boards/components/_form.html.haml

@@ -28,7 +28,8 @@
         = dropdown_loading
       %span
         Only show issues scheduled for the selected milestone
-    %board-milestone-select{ ":milestone-path" => "milestonePath",
+    %board-milestone-select{ "v-if" => "currentPage == 'milestone'",
+      ":milestone-path" => "milestonePath",
       ":select-milestone" => "selectMilestone",
       ":board" => "board" }
     .clearfix.prepend-top-10