LeanEngine Quick Start

In this documentation, you will learn how to create a LeanEngine project, debug it locally, and deploy your project to the cloud.

Creating a Project

Creating a Project with Command-Line Interface (Recommended)

Before creating a project, make sure you have installed the command-line interface according to Command-Line Interface. To check if it is installed properly, run the following command:

lean help

You will see the help information if everything is good.

Now run the following command to create a project:

lean init

Follow the prompts to enter the project information.

Creating a Project from a Template

You can use our sample project as a skeleton to start your project. Run the following command to clone the sample project from GitHub:

git clone https://github.com/leancloud/node-js-getting-started.git
cd node-js-getting-started

git clone https://github.com/leancloud/python-getting-started.git
cd python-getting-started

git clone https://github.com/leancloud/slim-getting-started.git
cd slim-getting-started

git clone https://github.com/leancloud/java-war-getting-started.git
cd java-war-getting-started

Now go to the directory of the sample project and run the following command to add your App ID to it:

lean switch

Running the Project Locally

Run the following command to install dependencies for your project:

npm install

pip install -Ur requirements.txt

composer install

mvn package

Now you are good to run your project:

lean up

Accessing the Site

Open your browser and go to http://localhost:3000. You will see the following content:

LeanEngine

这是 LeanEngine 的示例应用

当前时间：Mon Feb 01 2016 18:23:36 GMT+0800 (CST)

一个简单的「TODO 列表」示例

LeanEngine

这是 LeanEngine 的示例应用

一个简单的动态路由示例

一个简单的「TODO 列表」示例

LeanEngine

这是 LeanEngine 的示例应用

当前时间：2016-07-25T14:55:17+08:00

一个简单的「TODO 列表」示例

LeanEngine

这是 LeanEngine 的示例应用

一个简单的动态路由示例

一个简单的「TODO 列表」示例

The router of the site is defined as follows:

// ./app.js
// ...

app.get('/', function(req, res) {
  res.render('index', { currentTime: new Date() });
});

// ...

# ./app.py
# ...

@app.route('/')
def index():
    return render_template('index.html')

# ...

// ./src/app.php
// ...

$app->get('/', function (Request $request, Response $response) {
    return $this->view->render($response, "index.phtml", array(
        "currentTime" => new \DateTime(),
    ));
});

// ...

// ./src/main/webapp/WEB-INF/web.xml
// ...

  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
  </welcome-file-list>

// ...

Creating a Todo Item

Try adding a todo item at http://localhost:3000/todos and then go to your app's dashboard. You will see a new item in the class Todo with its content as the string you just entered. See LeanStorage guides for more instructions about how it could be implemented.

Deploying Your Project to the Cloud

Run the following command to deploy your project to the production environment (if you haven't purchased a standard instance):

lean deploy

If you have a second-level domain set up, you will be able to access your project via http://${your_app_domain}.avosapps.us.

If you have purchased a standard instance, your project will be deployed to the staging environment first when you run lean deploy. To deploy it to the production environment, run lean publish:

lean publish