save backup options

app/scripts/models/app-model.js

@@ -763,6 +763,14 @@ var AppModel = Backbone.Model.extend({
             });
         });
         this.fileInfos.save();
+    },
+
+    setFileBackup: function(fileId, backup) {
+        let fileInfo = this.fileInfos.get(fileId);
+        if (fileInfo) {
+            fileInfo.set('backup', backup);
+        }
+        this.fileInfos.save();
     }
 });
 

app/scripts/views/settings/settings-file-view.js

@@ -395,25 +395,30 @@ var SettingsFileView = Backbone.View.extend({
         }
         this.$el.find('.settings__file-backups').toggleClass('hide', !enabled);
         backup.enabled = enabled;
-        this.model.set('backup', backup);
+        this.setBackup(backup);
     },
 
     changeBackupPath: function(e) {
         let backup = this.model.get('backup');
         backup.path = e.target.value.trim();
-        this.model.set('backup', backup);
+        this.setBackup(backup);
     },
 
     changeBackupStorage: function(e) {
         let backup = this.model.get('backup');
         backup.storage = e.target.value;
-        this.model.set('backup', backup);
+        this.setBackup(backup);
     },
 
     changeBackupSchedule: function(e) {
         let backup = this.model.get('backup');
         backup.schedule = e.target.value;
+        this.setBackup(backup);
+    },
+
+    setBackup: function(backup) {
         this.model.set('backup', backup);
+        this.appModel.setFileBackup(this.model.id, backup);
     },
 
     backupFile: function() {

release-notes.md

@@ -8,6 +8,7 @@ Audit, generator presets, auto-type and ui improvements
 `+` solarized themes  
 `+` generator presets  
 `+` group reorder  
+`+` auto backups  
 `+` select field contents on search hotkey  
 `+` option to preload default config and file  
 `+` save displayed table columns