Module: Sinatra::Reloader
- Defined in:
- lib/sinatra/reloader.rb
Overview
Sinatra::Reloader
Extension to reload modified files. Useful during development, since it will automatically require files defining routes, filters, error handlers and inline templates, with every incoming request, but only if they have been updated.
Usage
Classic Application
To enable the reloader in a classic application all you need to do is require it:
require "sinatra"
require "sinatra/reloader" if development?
# Your classic application code goes here...
Modular Application
To enable the reloader in a modular application all you need to do is require it, and then, register it:
require "sinatra/base"
require "sinatra/reloader"
class MyApp < Sinatra::Base
configure :development do
register Sinatra::Reloader
end
# Your modular application code goes here...
end
Using the Reloader in Other Environments
By default, the reloader is only enabled for the development environment. Similar to registering the reloader in a modular application, a classic application requires manually enabling the extension for it to be available in a non-development environment.
require "sinatra"
require "sinatra/reloader"
configure :production do
enable :reloader
end
Changing the Reloading Policy
You can refine the reloading policy with also_reload
and dont_reload
, to customize which files should, and should not, be reloaded, respectively. You can also use after_reload
to execute a block after any file being reloaded.
Classic Application
Simply call the methods:
require "sinatra"
require "sinatra/reloader" if development?
also_reload '/path/to/some/file'
dont_reload '/path/to/other/file'
after_reload do
puts 'reloaded'
end
# Your classic application code goes here...
Modular Application
Call the methods inside the configure
block:
require "sinatra/base"
require "sinatra/reloader"
class MyApp < Sinatra::Base
configure :development do
register Sinatra::Reloader
also_reload '/path/to/some/file'
dont_reload '/path/to/other/file'
after_reload do
puts 'reloaded'
end
end
# Your modular application code goes here...
end
Defined Under Namespace
Modules: BaseMethods, ExtensionMethods Classes: Watcher
Constant Summary collapse
- MUTEX_FOR_PERFORM =
Mutex.new
- @@after_reload =
Allow a block to be executed after any file being reloaded
[]
Class Method Summary collapse
-
.perform(klass) ⇒ Object
Reloads the modified files, adding, updating and removing the needed elements.
-
.registered(klass) ⇒ Object
When the extension is registered it extends the Sinatra application
klass
with the modulesBaseMethods
andExtensionMethods
and defines a before filter toperform
the reload of the modified files.
Instance Method Summary collapse
Class Method Details
.perform(klass) ⇒ Object
Reloads the modified files, adding, updating and removing the needed elements.
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# File 'lib/sinatra/reloader.rb', line 244 def self.perform(klass) Watcher::List.for(klass).updated.each do |watcher| klass.set(:inline_templates, watcher.path) if watcher.inline_templates? watcher.elements.each { |element| klass.deactivate(element) } $LOADED_FEATURES.delete(watcher.path) require watcher.path watcher.update end @@after_reload.each(&:call) end |
.registered(klass) ⇒ Object
When the extension is registered it extends the Sinatra application klass
with the modules BaseMethods
and ExtensionMethods
and defines a before filter to perform
the reload of the modified files.
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# File 'lib/sinatra/reloader.rb', line 224 def self.registered(klass) @reloader_loaded_in ||= {} return if @reloader_loaded_in[klass] @reloader_loaded_in[klass] = true klass.extend BaseMethods klass.extend ExtensionMethods klass.set(:reloader) { klass.development? } klass.set(:reload_templates) { klass.reloader? } klass.before do if klass.reloader? MUTEX_FOR_PERFORM.synchronize { Reloader.perform(klass) } end end klass.set(:inline_templates, klass.app_file) if klass == Sinatra::Application end |
Instance Method Details
#after_reload(&block) ⇒ Object
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# File 'lib/sinatra/reloader.rb', line 217 def after_reload(&block) @@after_reload << block end |