Hooks¶

Most ddev commands provide hooks to run tasks before or after the main command executes. To automate setup tasks specific to your project, define them in the project's config.yaml file.

To define command tasks in your configuration, specify the desired command hook as a subfield to hooks, then provide a list of tasks to run.

Example:

hooks:
  post-start:
    - exec: "simple command expression"
    - exec: "ls >/dev/null && touch /var/www/html/somefile.txt"
    - exec-host: "simple command expression"
  post-import-db:
    - exec: "drush uli"

Supported Command Hooks¶

• pre-start: Hooks into "ddev start". Execute tasks before the project environment starts. Note: Only exec-host tasks can be generally run successfully during pre-start. See Supported Tasks below for more info.
• post-start: Execute tasks after the project environment has started.
• pre-import-db and post-import-db: Execute tasks before or after database import.
• pre-import-files and post-import-files: Execute tasks before or after files are imported
• pre-composer and post-composer: Execute tasks before or after the composer command.
• pre-stop, pre-config, post-config, pre-exec, post-exec, pre-pause, post-pause, pre-pull, post-pull, pre-push, post-push, pre-snapshot, post-snapshot, pre-restore-snapshot, post-restore-snapshot: Execute as the name suggests.
• post-stop: Hooks into "ddev stop". Execute tasks after the project environment stopped. Note: Only exec-host tasks can be generally run successfully during post-stop.

Supported Tasks¶

ddev currently supports these tasks:

• exec to execute a command in any service/container
• exec-host to execute a command on the host
• composer to execute a composer command in the web container

exec: Execute a shell command in a container (defaults to web container)¶

Value: string providing the command to run. Commands requiring user interaction are not supported. You can also add a "service" key to the command, specifying to run it on the db container or any other container you use.

Example: Use drush to clear the Drupal cache and get a user login link after database import

hooks:
  post-import-db:
    - exec: drush cr
    - exec: drush uli

Example: Use wp-cli to replace the production URL with development URL in the database of a WordPress project

hooks:
  post-import-db:
    - exec: wp search-replace https://www.myproductionsite.com http://mydevsite.ddev.site

Example: Add an extra database before import-db, executing in db container

hooks:
  pre-import-db:
    - exec: mysql -uroot -proot -e "CREATE DATABASE IF NOT EXISTS some_new_database;"
      service: db

Example: Add the common "ll" alias into the web container .bashrc file

hooks:
  post-start:
  - exec: sudo echo alias ll=\"ls -lhA\" >> ~/.bashrc

(Note that this could probably be done more efficiently in a .ddev/web-build/Dockerfile as explained in Customizing Images.)

Advanced usages may require running commands directly with explicit arguments. This approach is useful when bash interpretation is not required (no environment variables, no redirection, etc.)

hooks:
  post-start:
  - exec: 
    exec_raw: [ls, -lR, /var/www/html]

exec-host: Execute a shell command on the host system¶

Value: string providing the command to run. Commands requiring user interaction are not supported.

Example: Run "composer install" from your system before starting the project (composer must already be installed on the host workstation):

hooks:
  pre-start:
    - exec-host: "composer install"

composer: Execute a composer command in the web container¶

Value: string providing the composer command to run.

Example:

hooks:
  post-start:
    - composer: config discard-changes true

WordPress Example¶

hooks:
  post-start:
    # Install WordPress after start
    - exec: "wp config create --dbname=db --dbuser=db --dbpass=db --dbhost=db"
    - exec: "wp core install --url=http://mysite.ddev.site --title=MySite --admin_user=admin --admin_email=admin@mail.test"
  post-import-db:
    # Update the URL of your project throughout your database after import
    - exec: "wp search-replace https://www.myproductionsite.com http://mydevsite.ddev.site"

Drupal 7 Example¶

hooks:
  post-start:
    # Install Drupal after start if not installed already
    - exec: "(drush status bootstrap | grep -q Successful) || drush site-install -y --db-url=db:db@db/db"
    # Generate a one-time login link for the admin account.
    - exec: "drush uli 1"
  post-import-db:
    # Set the project name
    - exec: "drush vset site_name MyDevSite"
    # Enable the environment indicator module
    - exec: "drush en -y environment_indicator"
    # Clear the cache
    - exec: "drush cc all"

Drupal 8 Example¶

hooks:
  pre-start:
    # Install composer dependencies using composer on host system
    - exec-host: "composer install"
  post-start:
    # Install Drupal after start if not installed already
    - exec: "(drush status bootstrap | grep -q Successful) || drush site-install -y --db-url=mysql://db:db@db/db"
    # Generate a one-time login link for the admin account.
    - exec: "drush uli 1"
  post-import-db:
    # Set the site name
    - exec: "drush config-set system.site name MyDevSite"
    # Enable the environment indicator module
    - exec: "drush en -y environment_indicator"
    # Clear the cache
    - exec: "drush cr"

TYPO3 Example¶

hooks:
    post-start:
      - composer: install

Adding Additional Debian Packages (PHP Modules) Example¶

webimage_extra_packages: ["php-bcmath", "php7.4-tidy"]
dbimage_extra_packages: ["vim"]