Introduction
Welcome to this comprehensive guide on the migrate command in Empress, an integral feature for developers working on our platform. This guide is designed to provide you with technical depth and clarity, closely mirroring Apple’s sophistication in their developer resources.
Introduction to Migrate Command
In the world of Empress, the migrate command plays a crucial role in maintaining the state of your site with respect to the currently available applications. It ensures that your applications are up-to-date, running the latest patches, and in sync with the database schema, among other tasks.
Here’s a look at the command syntax:
bench migrate [OPTIONS]
Understanding the Migrate Command Workflow
The migrate command performs several operations in a specific order, ensuring a smooth transition to the current state of available apps. Here’s an overview of the tasks it undertakes:
- Runs ‘before_migrate’ Hooks: These are specific instructions that are executed before the migration process begins.
- Runs Application Patches: This step ensures that any necessary application patches are applied.
- Synchronizes Database Schema and Background Jobs: It aligns the database schema with the updated apps and manages any background jobs that need to be processed.
- Synchronizes Fixtures: This step ensures that all fixtures are in sync.
- Synchronizes Dashboards, Desktop Icons, and Web Pages: It takes care of updating your dashboards, desktop icons, and web pages according to the updated apps.
- Updates Translations: This process updates the language translations based on the changes made.
- Rebuilds Search Index for all routes: It rebuilds the search index, making sure that all routes are appropriately indexed.
- Runs ‘after_migrate’ Hooks: Lastly, these are specific instructions that are executed after the migration process is complete.
The operation also manages the touched_tables.json file for the respective file and updates the App Versions in the “Installed Applications” DocType.
Leveraging Flags with the Migrate Command
The migrate command also supports flags that allow you to customize the migration process. Here are the currently available flags:
--skip-failing: This flag lets you skip patches that fail to run.--skip-search-index: This flag allows you to skip the rebuilding of the search index for web documents.
Examples of the Migrate Command in Action
Here are some examples demonstrating the usage of the migrate command:
- Run migrations on an existing site:
bench --site {site} migrate
- Run migrations while skipping the rebuilding of the search index for web documents:
bench --site {site} migrate --skip-search-index
- Run migrations while skipping any failing patches:
bench --site {site} migrate --skip-failing
Note: We don’t recommend skipping failing patches for production use as it may lead to unpredictable issues.
Conclusion
The migrate command is a powerful tool in Empress, providing developers with a streamlined way to manage application updates. By understanding and utilizing this feature, developers can maintain the site’s state, ensure smooth application updates, and manage potential issues effectively. With its range of operations and customization flags, the migrate command is a vital component in the development and customization of business solutions on the Empress platform. Happy coding!