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BADCamp 2022 - Decoupling Drupal using GraphQL & Gatsby: A Crash Course

0 - Prerequisites

Your computer should be ready for Gatsby v4 and have installed:

  • Node (v16.x)
  • Yarn (v1.22.x)
  • NPM (8.x)
  • Git
  • Gatsby-CLI

1.A - Get the code on your local machine

Use git to clone the code repository

git clone [email protected]:octahedroid/badcamp-2022-gatsby.git

cd badcamp-2022-gatsby

Install dependencies

yarn install

Start Gatsby on develop mode

yarn develop

1.B Project Structure

❯ tree src/

 

1.C - Start gatsby

yarn start

1.D - Visit your Gatsby site

Open the browser and point to http://localhost:8000/

1.D - Visit the Graphiql instance of your Gatsby site

Open the browser and point to http://localhost:8000/___graphql

1.E - Execute query for all Site pages

{
  allSitePage {
    nodes {
      id
      path
    }
  }
}

2.A - Install Gatsby Source Drupal GraphQL plugin

yarn add gatsby-source-drupal-graphql

NOTE: This was done already no need to execute this command

2.B - Configure Gatsby Source Drupal GraphQL plugin

Add plugin configuration to gatsby-config.js file

    {
      resolve: `gatsby-source-drupal-graphql`,
      options: {
        baseUrl: process.env.DRUPAL_BASE_URL,
        endPoint: process.env.DRUPAL_ENDPOINT,
        environment: process.env.NODE_ENV,
        concurrency: 10,
        auth: {
          oauth: {
            baseUrl: process.env.DRUPAL_BASE_URL,
            user: process.env.DRUPAL_AUTH_USERNAME,
            password: process.env.DRUPAL_AUTH_PASSWORD,
            clientId: process.env.DRUPAL_AUTH_CLIENT_ID
          },
        },
      },
    },

2.C - Create .env files

cp .env.dist .env.development
cp .env.dist .env.production

NOTE: Copy values from instructor shared screen

3.A - Start gatsby

yarn start

3.B - Visit the Graphiql instance of your Gatsby site

Open the browser and point to http://localhost:8000/___graphql

3.C - Execute query for Node Pages

Copy/paste the following GraphQl query

{
  allDrupalNodePage {
    nodes {
      id
      title
      path
      body {
        processed
      }
    }
  }
}

3.D - Execute query for Node Articles

Copy/paste the following GraphQl query

{
  allDrupalNodeArticle {
    nodes {
      id
      title
      path
      body {
        processed
      }
      image {
        mediaImage {
          url
        }
        gatsbyImage {
          childImageSharp {
            gatsbyImageData
          }
        }
      }
    }
  }
}

3.D - Execute query for a single Node Page

Copy/paste the following GraphQl query





4.A - Create gatsby-node.js file


Create gatsby-node.js file and paste code


const path = require("path");

exports.createPages = async ({ graphql, actions }) => {
  return graphql(`
    query {
      allDrupalNodeArticle {
        nodes {
          id 
          path
        }
      }
      allDrupalNodePage {
        nodes {
          id 
          path
        }
      }
    }
  `).then((result) => {
    if (result.errors) {
      throw result.errors;
    }

    // Create allDrupalNodeArticle
    const articles = result.data.allDrupalNodeArticle.nodes;
    articles.forEach((article) => {
      actions.createPage({
        path: article.path,
        component: path.resolve("src/templates/article.js"),
        context: {
          id: article.id,
        },
      });
    });

    // Create allDrupalNodePage
    const pages = result.data.allDrupalNodePage.nodes;
    pages.forEach((page) => {
      actions.createPage({
        path: page.path === "/home" ? "/" : page.path,
        component: path.resolve("src/templates/page.js"),
        context: {
          id: page.id,
        },
      });
    });
  });
};


4.B - Create template file


Create src/templates/article.js file and paste code


import React from "react";
import { graphql } from "gatsby";
import Container from "../components/container";
import Header from "../components/header";
import Footer from "../components/footer";

export default function Article({ data: { node } }) {
  return (
    <Container>
      <Header />
      <article className="prose prose-lg max-w-6xl mx-auto">
        <pre>
            { JSON.stringify(node, {}, 2) }
        </pre>
      </article>
      <Footer />
    </Container>
  );
}

export const query = graphql`
  query drupalNodeArticle($id: String) {
    node: drupalNodeArticle(id: {eq: $id}) {
      title
      body {
        processed
      }
    }
  }
`


4.C - Create template file


Create src/templates/page.js file and paste code


import React from "react";
import { graphql } from "gatsby";
import Container from "../components/container";
import Header from "../components/header";
import Footer from "../components/footer";

export default function Page({ data: { node } }) {
  return (
    <Container>
      <Header />
      <article className="prose prose-lg max-w-6xl mx-auto">
        <pre>
            { JSON.stringify(node, {}, 2) }
        </pre>
      </article>
      <Footer />
    </Container>
  );
}

export const query = graphql`
  query drupalNodePage($id: String) {
    node: drupalNodePage(id: {eq: $id}) {
      title
      body {
        processed
      }
    }
  }
`


4.D - Remove index.js file


Remove src/pages/index.js index file




5.A - Rendering field data


Open page file src/templates/page.js


Remove JSON output


<pre>
    { JSON.stringify(node, {}, 2) }
</pre>


Import components


import Title from "../components/field/title";
import Body from "../components/field/body";


Add components to the page


<Title>{node.title}</Title>

<Body
  content={node?.body?.processed}
/>


5.B - Show/Hide field title feature


Open page file src/templates/page.js


Add showTitle to GraphLQ Query


    showTitle


Replace original code:


<Title>{node.title}</Title>


With this code containing the showTitle value validation to show/hide the title component


{ node.showTitle && <Title>{node.title}</Title> }


6.A - Serve inline-images from Drupal CMS


Open gatsby-config.js file and add configuration


        inlineImages: {
          'NodeArticle': ['body'],
          'NodePage': ['body'],
        }


Open page file src/templates/page.js


Add processedWithInlineImages field to GraphLQ Query


# GraphQL Customization Fields
fields {
  processedWithInlineImages
}


Update Body component to use previously added field


<Body
  content={node.fields.processedWithInlineImages}
/>


Instead of


<Body
  content={node?.body?.processed}
/>




Check gatsby-node.js for code to replace image relativePath with remotePath




6.B - Serve images as Gatsby Images


Open page file src/templates/page.js


Add inlineImages field to GraphLQ Query


# GraphQL Customization Fields
fields {
    ...
    inlineImages {
      remotePath
      gatsbyImage {
        childImageSharp {
          gatsbyImageData(width: 1024)
        }
      }
    }
}


Replace original Body compoenent with BodyInlineImages:


import BodyInlineImages from "../components/field/body-inline-images";


With the recently imported BodyInlineImages component


<BodyInlineImages
  content={node?.fields?.processedWithInlineImages}
  inlineImages={node.fields.inlineImages}
/>




7.A - Replace Body field with Paragraphs and React components


Add components field


      components {
        __typename
        ...ParagraphBlogTeaser
        ...ParagraphHeroCta
        ...ParagraphImage
        ...ParagraphText
      }




Check src/helpers/fragments.js for code related to GraphQL query fragments




Import uuid library and componentResolver helper


import uuid from "react-uuid"
import { componentResolver } from "../helpers/component-resolver"


Call componentResolver helper


const components = componentResolver(node?.components);




NOTE: Check src/helpers/component-resolver.js file for resolvers




7.B - Replace BodyInlineImages component:


<BodyInlineImages
  content={node?.fields?.processedWithInlineImages}
  inlineImages={node.fields.inlineImages}
/>


With the components array constant


{components &&
  components.map((item) => {
    return <React.Fragment key={uuid()}>{item}</React.Fragment>
})}


7.C - Remove no longer needed classNames at src/templates/page.js html


<article className="prose prose-lg max-w-6xl mx-auto">


It should look like this:


<article>





8.A - Rendering field data


Open page file src/templates/article.js


Remove JSON output


<pre>
    { JSON.stringify(node, {}, 2) }
</pre>


Add fields to GraphQL Query


      created
      author {
        displayName
        picture {
          gatsbyImage {
            childImageSharp {
              gatsbyImageData(layout: FIXED, width: 48, height: 48)
            }
          }
        }
      }
      image {
        gatsbyImage {
          childImageSharp {
            gatsbyImageData(width: 1500)
          }
        }
      }


Add code


  const author = {
    name: node.author.displayName,
    picture: node.author.picture.gatsbyImage.childImageSharp,
  }


Import component


import Cover from "../components/cover";


Add Cover component to the page


<Cover
  className="prose prose-lg max-w-6xl mx-auto"
  title={node.title}
  coverImage={node.image.gatsbyImage.childImageSharp}
  date={node.created}
  author={author}
/>


8.B - Add and React components


Add components field


      components {
        __typename
        ...ParagraphHeroCta
        ...ParagraphHeroText
        ...ParagraphImage
        ...ParagraphText
        ...ParagraphCodeBlock
      }


8.C - Import uuid library and componentResolver helper


import uuid from "react-uuid"
import { componentResolver } from "../helpers/component-resolver"


Call componentResolver helper


const components = componentResolver(node?.components);


And render the components array constant


{components &&
  components.map((item) => {
    return <React.Fragment key={uuid()}>{item}</React.Fragment>
})}


8.D - Remove no longer needed classNames at article html


<article className="prose prose-lg max-w-6xl mx-auto">


It should look like this:


<article>




Q & A


Used Drupal Modules:



Other Drupal Modules: