How to build a todo app with Airsequel Enterprise and Lowdefy

In this tutorial we will be building a very simple todo app with Lowdefy. It will load the todos via GraphQL from a SQLite database hosted on Airsequel.
This is what the final app will look like. Not pretty, but functional!
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If you find any problems in this tutorial, please feel free to leave a comment!

Setting up the Airsequel Database

Upload following SQLite database to <your-company>.airsequel.com:
Keep the browser tab with the overview page open, since you’ll need the database id later.

Creating the Lowdefy app

  1. Create the directory and the boilerplate code:
    1. shell
      mkdir lowdefy-todo-app cd lowdefy-todo-app npx lowdefy@latest init
  1. Start development server:
    1. plain text
      npx lowdefy@latest dev
You should now see the welcome screen running at localhost:3000/welcome:
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Since Lowdefy does not have a dedicated GraphQL connector yet (github.com/lowdefy/lowdefy/issues/298), we simply use the more generic AxiosHttp module to make the necessary HTTP POST request. Therefore add following block right below the name: … line:
yaml
connections: - id: graphql_api type: AxiosHttp properties: baseURL: https://<your-company>.airsequel.com
In order to render our todos, replace now the pages: block with following code and replace <database-id>with your database id from database setup step.
yaml
pages: - id: todos type: PageHeaderMenu requests: - id: todos_request type: AxiosHttp connectionId: graphql_api properties: url: /dbs/<database-id>/graphql method: post data: query: "{ todos { title, completed } }" events: onEnter: - id: fetch_todos type: Request params: todos_request - id: set_todos type: SetState params: todo_list: _request: todos_request.data.data.todos blocks: - id: title_main type: Title properties: content: Todos - id: todo_list type: List blocks: - id: todo_container_$ type: Box style: background: LightGray margin: 0.5rem padding: 1rem 2rem blocks: - id: todo_list.$.completed type: CheckboxSwitch layout: size: 2em align: middle properties: label: disabled: true - id: todo_title_$ type: Span layout: grow: 1 align: middle properties: content: _state: todo_list.$.title
Now, the complete file looks like this:
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The next steps in this tutorial will be added soon! In particular: Writing, updating, and deleting todos