Package translate :: Package misc :: Module selector :: Class MiddlewareComposer

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# Class MiddlewareComposer

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Compose middleware based on list of rules.

Instance Methods | [hide private]

__init__(self, app, rules) Instantiate with an app and a list of rules. | source code

__call__(self, environ, start_response) Apply each middleware whose predicate is true. | source code

Inherited from `object`: `__delattr__`, `__getattribute__`, `__hash__`, `__new__`, `__reduce__`, `__reduce_ex__`, `__repr__`, `__setattr__`, `__str__`

Properties | [hide private]

Inherited from `object`: `__class__`

Method Details | [hide private]

### __init__(self, app, rules)
(Constructor)

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Instantiate with an app and a list of rules.

Overrides: object.__init__

### __call__(self, environ, start_response)
(Call operator)

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Apply each middleware whose predicate is true.

Each predicate is passes the environ to evaluate.

Given this set of rules:

t = lambda x: True; f = lambda x: False [(t, a), (f, b), (t, c), (f, d), (t, e)]

The app composed would be equivalent to this:

a(c(e(app)))