Combining Multiple createPage Routes in gatsby-node.js using NodeJS

To use multiple createPage routes in gatsby-node.js, you first need to have some understanding of Node.js and Gatsby. Node.js is a runtime environment that allows you to run JavaScript code outside a web browser, while Gatsby is a static site generator built on top of React. Gatsby uses a file called gatsby-node.js to interact with the Gatsby Node API and make changes to the site’s build process.

In Gatsby, the createPage function is used to dynamically create new pages based on data fetched from external sources. This function takes an object as an argument, with key-value pairs specifying the path of the new page and the component to render for that page. By using multiple calls to createPage, you can programmatically generate a series of pages at build time.

Here is a step-by-step tutorial on how to use multiple createPage routes in gatsby-node.js:

Step 1: Create a new Gatsby project
If you haven’t already, you need to create a new Gatsby project by running the following command in your terminal:

gatsby new my-gatsby-project

This will create a new Gatsby project in a folder called my-gatsby-project.

Step 2: Install required dependencies
Next, navigate to the project folder and install any required dependencies, such as react, react-dom, and gatsby. You can do this by running the following command:

npm install react react-dom gatsby

Step 3: Open gatsby-node.js
Navigate to the src folder inside your Gatsby project and open the gatsby-node.js file in a text editor of your choice.

Step 4: Define multiple createPage routes
In the gatsby-node.js file, you can define multiple createPage routes by using a loop or by manually calling createPage multiple times. Here’s an example using a loop:

exports.createPages = async ({ actions }) => {
  const { createPage } = actions

  const pages = [
    { path: '/page1', component: require.resolve('./src/templates/page1.js') },
    { path: '/page2', component: require.resolve('./src/templates/page2.js') },
    { path: '/page3', component: require.resolve('./src/templates/page3.js') },
  ]

  pages.forEach(({ path, component }) => {
    createPage({
      path,
      component,
      context: {},
    })
  })
}

In this example, we define an array called pages that contains objects with path and component keys. The path specifies the URL of the new page, while the component specifies the file path of the component to render for that page. We then loop through the pages array and call createPage for each item, passing in the path, component, and an empty context object.

Step 5: Run the Gatsby development server
To see the newly generated pages in action, run the Gatsby development server by executing the following command in your terminal:

gatsby develop

This will start a local development server at http://localhost:8000. You can now navigate to http://localhost:8000/page1, http://localhost:8000/page2, and http://localhost:8000/page3 to see the dynamically created pages.

That’s it! You have successfully used multiple createPage routes in gatsby-node.js. Feel free to explore more advanced features of Gatsby and Node.js to further customize your Gatsby project.