feat: core improvements + local fs provider + UI fixes

server/models/groups.js

@@ -0,0 +1,47 @@
+const Model = require('objection').Model
+
+/**
+ * Groups model
+ */
+module.exports = class Group extends Model {
+  static get tableName() { return 'groups' }
+
+  static get jsonSchema () {
+    return {
+      type: 'object',
+      required: ['name'],
+
+      properties: {
+        id: {type: 'integer'},
+        name: {type: 'string'},
+        createdAt: {type: 'string'},
+        updatedAt: {type: 'string'}
+      }
+    }
+  }
+
+  static get relationMappings() {
+    return {
+      users: {
+        relation: Model.ManyToManyRelation,
+        modelClass: require('./users'),
+        join: {
+          from: 'groups.id',
+          through: {
+            from: 'userGroups.groupId',
+            to: 'userGroups.userId'
+          },
+          to: 'users.id'
+        }
+      }
+    }
+  }
+
+  $beforeUpdate() {
+    this.updatedAt = new Date().toISOString()
+  }
+  $beforeInsert() {
+    this.createdAt = new Date().toISOString()
+    this.updatedAt = new Date().toISOString()
+  }
+}