Redmine, at its core, is a project management and issue tracking system. Its developers have invested a lot of time and energy into building an extremely robust solution that rivals even proprietary competitors, but we occasionally find ourselves wishing we could perform a certain task or see a piece of information differently.
Thankfully, Redmine was designed with extensibility in mind. Not only is there a plugin system in place to allow custom functionality to be implemented, but core features can be extended using a system of hooks and callbacks.
In this chapter, we will dive into the various classifications of hooks and how our plugin can leverage them to add new functionality to existing Redmine systems and components.
We will cover the following topics in this chapter:
An introduction to what a hook is
What types of hooks exist and where they can be used
An example view hook implementation