Class: Flipper::Middleware::SetupEnv

Inherits:
Object
  • Object
show all
Defined in:
lib/flipper/middleware/setup_env.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, flipper_or_block = nil, options = {}) ⇒ SetupEnv

Public: Initializes an instance of the SetupEnv middleware. Allows for lazy initialization of the flipper instance being set in the env by providing a block.

app - The app this middleware is included in. flipper_or_block - The Flipper::DSL instance or a block that yields a

Flipper::DSL instance to use for all operations
(optional, default: Flipper).

Examples

flipper = Flipper.new(...)

# using with a normal flipper instance
use Flipper::Middleware::SetupEnv, flipper

# using with a block that yields a flipper instance
use Flipper::Middleware::SetupEnv, lambda { Flipper.new(...) }

# using default configured Flipper instance
Flipper.configure do |config|
  config.default { Flipper.new(...) }
end
use Flipper::Middleware::SetupEnv



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# File 'lib/flipper/middleware/setup_env.rb', line 28

def initialize(app, flipper_or_block = nil, options = {})
  @app = app
  @env_key = options.fetch(:env_key, 'flipper')

  if flipper_or_block.respond_to?(:call)
    @flipper_block = flipper_or_block
  else
    @flipper = flipper_or_block || Flipper
  end
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/flipper/middleware/setup_env.rb', line 39

def call(env)
  dup.call!(env)
end

#call!(env) ⇒ Object 



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# File 'lib/flipper/middleware/setup_env.rb', line 43

def call!(env)
  env[@env_key] ||= flipper
  @app.call(env)
end