Twig Configuration Reference (TwigBundle)
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The TwigBundle integrates the Twig library in Symfony applications to
render templates. All these options are configured under
the twig
key in your application configuration.
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# displays the default config values defined by Symfony
$ php app/console config:dump-reference twig
# displays the actual config values used by your application
$ php app/console debug:config twig
Note
When using XML, you must use the http://symfony.com/schema/dic/twig
namespace and the related XSD schema is available at:
http://symfony.com/schema/dic/twig/twig-1.0.xsd
Configuration
auto_reload
type: boolean
default: '%kernel.debug%'
If true
, whenever a template is rendered, Symfony checks first if its source
code has changed since it was compiled. If it has changed, the template is
compiled again automatically.
autoescape
type: boolean
or string
default: 'name'
If set to false
, automatic escaping is disabled (you can still escape each content
individually in the templates).
Caution
Setting this option to false
is dangerous and it will make your
application vulnerable to XSS exploits because most third-party bundles
assume that auto-escaping is enabled and they don't escape contents
themselves.
If set to a string, the template contents are escaped using the strategy with
that name. Allowed values are html
, js
, css
, url
, html_attr
and name
. The default value is name
. This strategy escapes contents
according to the template name extension (e.g. it uses html
for *.html.twig
templates and js
for *.js.html
templates).
Tip
See autoescape_service and autoescape_service_method to define your own escaping strategy.
autoescape_service
type: string
default: null
As of Twig 1.17, the escaping strategy applied by default to the template is
determined during compilation time based on the filename of the template. This
means for example that the contents of a *.html.twig
template are escaped
for HTML and the contents of *.js.twig
are escaped for JavaScript.
This option allows to define the Symfony service which will be used to determine the default escaping applied to the template.
autoescape_service_method
type: string
default: null
If autoescape_service
option is defined, then this option defines the method
called to determine the default escaping applied to the template.
base_template_class
type: string
default: 'Twig\\Template'
Twig templates are compiled into PHP classes before using them to render contents. This option defines the base class from which all the template classes extend. Using a custom base template is discouraged because it will make your application harder to maintain.
cache
type: string
| false
default: '%kernel.cache_dir%/twig'
Before using the Twig templates to render some contents, they are compiled into regular PHP code. Compilation is a costly process, so the result is cached in the directory defined by this configuration option.
Set this option to false
to disable Twig template compilation. However, this
is not recommended; not even in the dev
environment, because the
auto_reload
option ensures that cached templates which have changed get
compiled again.
charset
type: string
default: '%kernel.charset%'
The charset used by the template files. In the Symfony Standard edition this
defaults to the UTF-8
charset.
date
These options define the default values used by the date
filter to format
date and time values. They are useful to avoid passing the same arguments on
every date
filter call.
format
type: string
default: F j, Y H:i
The format used by the date
filter to display values when no specific format
is passed as argument.
interval_format
type: string
default: %d days
The format used by the date
filter to display DateInterval
instances
when no specific format is passed as argument.
timezone
type: string
default: (the value returned by date_default_timezone_get()
)
The timezone used when formatting date values with the date
filter and no
specific timezone is passed as argument.
debug
type: boolean
default: '%kernel.debug%'
If true
, the compiled templates include a __toString()
method that can
be used to display their nodes.
exception_controller
type: string
default: twig.controller.exception:showAction
This is the controller that is activated after an exception is thrown anywhere
in your application. The default controller
(ExceptionController)
is what's responsible for rendering specific templates under different error
conditions (see How to Customize Error Pages). Modifying this
option is advanced. If you need to customize an error page you should use
the previous link. If you need to perform some behavior on an exception,
you should add a listener to the kernel.exception
event (see Built-in Symfony Service Tags).
number_format
These options define the default values used by the number_format
filter to
format numeric values. They are useful to avoid passing the same arguments on
every number_format
filter call.
decimals
type: integer
default: 0
The number of decimals used to format numeric values when no specific number is
passed as argument to the number_format
filter.
decimal_point
type: string
default: .
The character used to separate the decimals from the integer part of numeric
values when no specific character is passed as argument to the number_format
filter.
thousands_separator
type: string
default: ,
The character used to separate every group of thousands in numeric values when
no specific character is passed as argument to the number_format
filter.
optimizations
type: int
default: -1
Twig includes an extension called optimizer
which is enabled by default in
Symfony applications. This extension analyzes the templates to optimize them
when being compiled. For example, if your template doesn't use the special
loop
variable inside a for
tag, this extension removes the initialization
of that unused variable.
By default, this option is -1
, which means that all optimizations are turned
on. Set it to 0
to disable all the optimizations. You can even enable or
disable these optimizations selectively, as explained in the Twig documentation
about the optimizer extension.
paths
type: array
default: null
This option defines the directories where Symfony will look for Twig templates
in addition to the default locations (app/Resources/views/
and the bundles'
Resources/views/
directories). This is useful to integrate the templates
included in some library or package used by your application.
The values of the paths
option are defined as key: value
pairs where the
value
part can be null
. For example:
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# app/config/config.yml
twig:
# ...
paths:
'%kernel.root_dir%/../vendor/acme/foo-bar/templates': ~
The directories defined in the paths
option have more priority than the
default directories defined by Symfony. In the above example, if the template
exists in the acme/foo-bar/templates/
directory inside your application's
vendor/
, it will be used by Symfony.
If you provide a value for any path, Symfony will consider it the Twig namespace for that directory:
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# app/config/config.yml
twig:
# ...
paths:
'%kernel.root_dir%/../vendor/acme/foo-bar/templates': 'foo_bar'
This option is useful to not mess with the default template directories defined by Symfony. Besides, it simplifies how you refer to those templates:
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@foo_bar/template_name.html.twig
strict_variables
type: boolean
default: false
If set to true
, Symfony shows an exception whenever a Twig variable,
attribute or method doesn't exist. If set to false
these errors are ignored
and the non-existing values are replaced by null
.