Intruduced a new folder structure for action models

ref #76

src/models/actions/create/CreateUserGroup.ts

@@ -0,0 +1,33 @@
+import { IsOptional, IsString } from 'class-validator';
+import { UserGroup } from '../entities/UserGroup';
+
+/**
+ * This classed is used to create a new UserGroup entity from a json body (post request).
+ */
+export class CreateUserGroup {
+    /**
+     * The new group's name.
+     */
+    @IsString()
+    name: string;
+
+    /**
+     * The new group's description.
+     * Optinal.
+     */
+    @IsOptional()
+    @IsString()
+    description?: string;
+
+    /**
+     * Creates a new UserGroup entity from this.
+     */
+    public async toUserGroup(): Promise<UserGroup> {
+        let newUserGroup: UserGroup = new UserGroup();
+
+        newUserGroup.name = this.name;
+        newUserGroup.description = this.description;
+
+        return newUserGroup;
+    }
+}