Class: Rack::Utils::Context
- Inherits:
-
Object
- Object
- Rack::Utils::Context
- Defined in:
- lib/rack/utils.rb
Overview
Context allows the use of a compatible middleware at different points in a request handling stack. A compatible middleware must define #context which should take the arguments env and app. The first of which would be the request environment. The second of which would be the rack application that the request would be forwarded to.
Instance Attribute Summary collapse
-
#app ⇒ Object
readonly
Returns the value of attribute app.
-
#for ⇒ Object
readonly
Returns the value of attribute for.
Instance Method Summary collapse
- #call(env) ⇒ Object
- #context(env, app = @app) ⇒ Object
-
#initialize(app_f, app_r) ⇒ Context
constructor
A new instance of Context.
- #recontext(app) ⇒ Object
Constructor Details
#initialize(app_f, app_r) ⇒ Context
Returns a new instance of Context.
486 487 488 489 |
# File 'lib/rack/utils.rb', line 486 def initialize(app_f, app_r) raise 'running context does not respond to #context' unless app_f.respond_to? :context @for, @app = app_f, app_r end |
Instance Attribute Details
#app ⇒ Object (readonly)
Returns the value of attribute app.
484 485 486 |
# File 'lib/rack/utils.rb', line 484 def app @app end |
#for ⇒ Object (readonly)
Returns the value of attribute for.
484 485 486 |
# File 'lib/rack/utils.rb', line 484 def for @for end |
Instance Method Details
#call(env) ⇒ Object
491 492 493 |
# File 'lib/rack/utils.rb', line 491 def call(env) @for.context(env, @app) end |
#context(env, app = @app) ⇒ Object
499 500 501 |
# File 'lib/rack/utils.rb', line 499 def context(env, app = @app) recontext(app).call(env) end |
#recontext(app) ⇒ Object
495 496 497 |
# File 'lib/rack/utils.rb', line 495 def recontext(app) self.class.new(@for, app) end |