Skip to content

add note on service parameters regarding ScopeWideningInjectionException #2424

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 4 commits into from
Apr 4, 2013
Merged

add note on service parameters regarding ScopeWideningInjectionException #2424

Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
86ef304
add note on service parameters regarding ScopeWideningInjectionException
joelclermont Mar 30, 2013
5aaad8d
fix backticks with double backticks
joelclermont Mar 30, 2013
d3cea66
remove unnecessary text
joelclermont Mar 30, 2013
7b0bfac
change note to caution and simplify text
joelclermont Apr 2, 2013
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 8 additions & 0 deletions book/service_container.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -231,6 +231,14 @@ looks up the value of each parameter and uses it in the service definition.

<argument type="string">http://symfony.com/?foo=%%s&bar=%%d</argument>

.. caution::

You may receive a
:class:`Symfony\\Component\\DependencyInjection\\Exception\\ScopeWideningInjectionException`
when passing the ``request`` service as an argument. To understand this
problem better and learn how to solve it, refer to the cookbook article
:doc:`/cookbook/service_container/scopes`.

The purpose of parameters is to feed information into services. Of course
there was nothing wrong with defining the service without using any parameters.
Parameters, however, have several advantages:
Expand Down