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=doc Significantly extend HTTP documentation with new content and ports from spray docs

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Mathias 2015-05-11 23:05:18 +02:00 • committed by Johannes Rudolph
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akka-docs-dev/rst/scala/http/routing-dsl/directives/basic-directives/textract.rst Normal file
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.. _-textract-:
textract
========
Calculates a tuple of values from the request context and provides them to the inner route.
Signature
---------
.. includecode2:: /../../akka-http-scala/src/main/scala/akka/http/scaladsl/server/directives/BasicDirectives.scala
:snippet: textract
Description
-----------
The ``textract`` directive is used as a building block for :ref:`Custom Directives` to extract data from the
``RequestContext`` and provide it to the inner route. To extract just one value use the :ref:`-extract-` directive. To
provide a constant value independent of the ``RequestContext`` use the :ref:`-tprovide-` directive instead.
See :ref:`ProvideDirectives` for an overview of similar directives.
Example
-------
.. includecode2:: ../../../../code/docs/http/scaladsl/server/directives/BasicDirectivesExamplesSpec.scala
:snippet: textract