19.3. Conclusion

You have now learned about all the basic aspects of Rails plugins. You learned how to install and remove them. You also learned the fundamentals of writing your own plugins, enough to at least get you started experimenting with them.

To cover everything related to Rails plugins would require its own book and would go beyond the needs of most Rails developers, so we did not cover testing plugins or the more advanced techniques employed by plugin developers. We also did not discuss topics related to the life of a plugin beyond its initial development.