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gatsby-plugin-cms

This plugin links your gatsby site with VTEX’s CMS datalayer.

Installation

To install @vtex/gatsby-plugin-cms in your project, just open your gatsby-config.js and add:

module.exports = {
  siteMetadata: {
    siteUrl: `https://www.example.com`,
  },
  plugins: [
    {
      resolve: '@vtex/gatsby-plugin-cms',
      options: {
        tenant,
        workspace,
      },
    }
  ],
}

where tenant is your store’s account name and workspace is the VTEX IO workspace being used. Usually you will want to set this option to master.

An example config, using storecomponents account, would be:

module.exports = {
  siteMetadata: {
    siteUrl: `https://storecomponents.vtex.app`,
  },
  plugins: [
    {
      resolve: '@vtex/gatsby-plugin-cms',
      options: {
        tenant: 'storecomponents',
        workspace: 'master',
      },
    }
  ],
}

Note: The siteUrl property must be defined and not left empty.

Configuring CMS

All CMS configuration is done by shadowing this plugin’s index.ts file. The shadowing can be done by creating the folowing structure in your gatsby project

src/
├── @vtex
│   ├── gatsby-plugin-cms
│   │   └── index.ts

The shadowed index.ts file must export one variable called contentTypes. This option is explained in detail below

Adding Components and defining ContentTypes

To tell the CMS how to configure and render your components you need to define a component schema. The component schema is written in Json Schema v6, a versatile description language for creating forms.

For instance, a component description is something like:

import { Schemas } from '@vtex/gatsby-plugin-cms'

const schemas: Schemas = {
  'my-component-name': {
    title: 'My Awesome Component',
    description: 'This is my first CMS ready component',
    type: 'object',
    properties: {
      prop1: {
        title: 'Default value for prop1',
        type: 'string',
      },
      prop2: {
        title: 'Default value for prop2',
        type: 'string',
      }
    }
  }
}

Now that we have a component’s schema, we must associate this schema to a content type. Content types define a page structure and they are those who you will be able to edit in the CMS interface. To export a content type, just:

import { Schemas, ContentTypes } from '@vtex/gatsby-plugin-cms'

const schemas: Schemas = {
  'my-component-name': {
    ...
  }
}

export const contentTypes: ContentTypes = {
  'my-lading-page': {
    blocks: {
      'my-component-name': schemas['my-component-name'],
      ...
    },
    extraBlocks: {
      ...
    },
    beforeBlocks: {
      ...
    },
    afterBlocks: {
      ...
    },
    messages: {
      ...
    },
  },
}

Note that blocks must be a subset of schemas

You can read more about each property in the CMS developer docs

Querying data.

After creating contents in the CMS, you will be able to query them into the Gatsby GraphQL layer. Each content type will have a corresponding type on the Gatsby GraphQL layer.

For instace, let’s supose you are defining the content type for your home page. In your home page you have a banner, and you have some information about the SEO of this page, like title and description tags. The following contentType definition is a valid solution:

{
  homePage: {
    blocks: {
      banner: {
        type: 'object',
        properties: {
          imageUrl: {
            type: "string",
          }
        }
      }
    },
    extraBlocks: {
      seo: {
        tags: {
          type: 'object'
          properties: {
            title: {
              type: 'string'
            },
            description: {
              type: 'string'
            }
          }

        }
      }
    },
  }
}

This, in turn, would generate types in your Gatsby GraphQL layer. To query these data you can do the follwing query:

query HomePageQuery {
  cmsHomePage {
    sections: {
      name
      props
    }
    seo {
      tags {
        title
        description
      }
    }
  }
}

which would return the follwing json:

{
  data: {
    sections: {
      name: 'banner'
      props: {
        imageUrl: 'https://path/to/image/url'
      }
    },
    seo: {
      tags: {
        title: 'Page Title',
        description: 'Page Description'
      }
    }
  }
}