View Source Phoenix.CodeReloader (Phoenix v1.7.0-rc.0)

A plug and module to handle automatic code reloading.

To avoid race conditions, all code reloads are funneled through a sequential call operation.

Link to this section Summary

Functions

API used by Plug to invoke the code reloader on every request.

API used by Plug to start the code reloader.

Reloads code for the current Mix project by invoking the :reloadable_compilers on the list of :reloadable_apps.

Same as reload/1 but it will raise if Mix is not available.

Synchronizes with the code server if it is alive.

Link to this section Functions

API used by Plug to invoke the code reloader on every request.

API used by Plug to start the code reloader.

@spec reload(module()) :: :ok | {:error, binary()}

Reloads code for the current Mix project by invoking the :reloadable_compilers on the list of :reloadable_apps.

This is configured in your application environment like:

config :your_app, YourAppWeb.Endpoint,
  reloadable_compilers: [:gettext, :elixir],
  reloadable_apps: [:ui, :backend]

Keep in mind :reloadable_compilers must be a subset of the :compilers specified in project/0 in your mix.exs.

The :reloadable_apps defaults to nil. In such case default behaviour is to reload the current project if it consists of a single app, or all applications within an umbrella project. You can set :reloadable_apps to a subset of default applications to reload only some of them, an empty list - to effectively disable the code reloader, or include external applications from library dependencies.

This function is a no-op and returns :ok if Mix is not available.

@spec reload!(module()) :: :ok | {:error, binary()}

Same as reload/1 but it will raise if Mix is not available.

@spec sync() :: :ok

Synchronizes with the code server if it is alive.

It returns :ok. If it is not running, it also returns :ok.