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@bgschiller/contentful-migrate

v0.18.7

Published

Migration tooling for Contentful, with state management

Downloads

22

Readme

Contentful Migrate Tool

Build Status

Forked from deluan/contentful-migrate. The primary changes include:

  • A single track of migrations, rather than one for each content type. This is safer when content types depend on one another.
  • Added Typescript annotations to source.
  • migration template uses jsdoc comments to get typechecking
  • bootstrap will avoid trying to set a null .displayField() value
  • Common usage mistakes have better error messages. For example: using a contentful cdn token rather than an access token or running up without init.

Manage your Contentful schema by creating incremental scripted changes. This project is based on the ideas exposed in Contentful's CMS as Code article

Scripts are written using Contentful's migration tool syntax. Ex:

// @ts-check

module.exports.description = "Create Post model";

/**
 * @param {import("contentful-migration").default} migration
 */
module.exports.up = migration => {
  const post = migration
    .createContentType("post")
    .name("Post")
    .displayField("title")
    .description("Post model");

  post
    .createField("title")
    .name("Title")
    .type("Symbol")
    .required(true)
    .localized(false);
};

/**
 * @param {import("contentful-migration").default} migration
 */
module.exports.down = migration => {
  migration.deleteContentType("post");
};

This command line tool is designed to keep track of changes of content types individually. It keeps the scripts in a migrations folder in your project. Ex:

your-project
├── README.md
├── migrations
│   ├── 1513743198536-create-banner.js
│   ├── 1513695986378-create-post.js
│   └── 1513716408272-add-date-field.js
├── package.json
.
.
.

If you don't wish to have your migrations directory in the root of your project, you can configure the name and location by setting the CONTENTFUL_MIGRATIONS_DIR environment variable, e.g. /path/to/project/foo/contentful-migrations

ATTENTION: The migrations directory should always be a folder under the project's root (or under some subdir inside the root). Placing the directory outside of the project's version control could lead to the migration code and Contentful schema becoming out-of-sync.

For more information on schema migrations technique and practice, see:

Installation

npm install @bgschiller/contentful-migrate

Usage

Most of the available commands need a personal access token for accessing the CMA (Contentful Management API). You can pass the token using the --access-token option or setting an environment variable called CONTENTFUL_MANAGEMENT_ACCESS_TOKEN

Similarly, a default contentful space and environment id can be specified by setting the CONTENTFUL_SPACE_ID and CONTENTFUL_ENV_ID environment variables, which will be used as defaults for any command that accepts the --space-id and --environment-id options.

init

Creates the content type 'Migration' into the designated contentful space. This will be used to keep track of the current state of each managed content type.

  Usage: ctf-migrate init [options]

  Options:

    -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')

If the target space already has been init'd before, it will throw an error:

Content type with id "migration" already exists.

bootstrap

Create your migration files for content models already in your space. It gives you the option to squash any previous migration state. Note: It will delete any existing migration scripts and create a consolidated one for each specified content type.

  Usage: ctf-migrate bootstrap [options]

  Options:

    -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')

Example: executing the command ctf-migrate bootstrap -s <space-id> will create a file where the up command will generate the exact snapshot of the Post content model

create

Creates an empty time stamped file in the content-type's migrations folder.

  Usage: ctf-migrate create <name> [options]

Example: executing the command ctf-migrate create create-post-model will create a file named ./migrations/post/1513695986378-create-post.js (the timestamp will vary)

list

Lists all migrations for the given content-types, also indicating whether they were already applied and when.

  Usage: ctf-migrate list [options]

  Options:

    -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')

Example:

$ ctf-migrate list -s i2ztmmsocxul
Listing Migrations
  [2017-12-19 22:12:58] 1513695986378-create-post.js : Create Post model
  [2018-01-08 15:01:45] 20180103165614-create-banner.js : Create Banner model
  [2018-01-22 11:01:33] 20180111172942-add-subtitle-field.js: Add Subtitle field
  [pending] 1513716408272-add-title-field.js : Adds title field

For the post model in this example, the first script (create-post.js) has already been applied but the second one (add-title-field.js) has not. For the banner model, all scripts have been applied.

up

Migrates up to a specific version or all pending scripts if a filename is not informed. This will apply pending scripts for the specified content-type into the specified space.

  Usage: ctf-migrate up [filename] [options]

  Options:

    -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')
    -d, --dry-run                      only shows the plan, don't write anything to contentful. defaults to false

down

ATTENTION: As noted in the CMS as Code article, "in real-world situations there is often no real way to down migrate content without resorting to backups". Even though we agree with that assertion, we still think there is value in having a down function to make it easier to develop and debug the up migration scripts (when you're working on a dev/test space), as it makes it easy to revert your changes and try again, without resorting to any manual intervention.*

Migrates down to a specific version or just the last one if filename is not informed. This will roll back applied scripts for the specified content-type from the specified space.

  Usage: ctf-migrate down [filename] [options]

  Options:

    -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')
    -d, --dry-run                      only shows the plan, don't write anything to contentful. defaults to false

Writing Migrations

For more information on how to write migrations, see Contentful migrations documentation

This tool is based on node-migrate. For more information on how to run migrations, see Running migrations