发布于 2015-08-27 16:36:52 | 227 次阅读 | 评论: 0 | 来源: 网络整理
Twig is the default template engine for Symfony. By itself, it already contains a lot of built-in functions, filters, tags and tests (learn more about them from the Twig Reference).
Symfony adds custom extensions on top of Twig to integrate some components into the Twig templates. The following sections describe the custom functions, filters, tags and tests that are available when using the Symfony Core Framework.
There may also be tags in bundles you use that aren’t listed here.
{{ render(uri, options) }}
uri
string
| ControllerReference
options
array
default: []
Renders the fragment for the given controller (using the controller function) or URI. For more information, see 嵌入Controller.
The render strategy can be specified in the strategy
key of the options.
{{ render_esi(uri, options) }}
uri
string
| ControllerReference
options
array
default: []
Generates an ESI tag when possible or falls back to the behavior of render function instead. For more information, see 嵌入Controller.
小技巧
The render_esi()
function is an example of the shortcut functions of render
. It automatically sets the strategy based on what’s given in the function name, e.g. render_hinclude()
will use the hinclude.js strategy. This works for all render_*()
functions.
{{ controller(controller, attributes, query) }}
controller
string
attributes
array
default: []
query
array
default: []
Returns an instance of ControllerReference
to be used with functions like render() and render_esi().
{{ asset(path, packageName, absolute = false, version = null) }}
path
string
packageName
string``|``null
default: null
absolute
boolean
default: false
version
string
default null
Returns a public path to path
, which takes into account the base path set for the package and the URL path. More information in 链接静态文件. For asset versioning, see assets_version.
{{ asset_version(packageName) }}
packageName
string
| null
default: null
Returns the current version of the package, more information in 链接静态文件.
{{ form(view, variables) }}
view
FormView
variables
array
default: []
Renders the HTML of a complete form, more information in the Twig Form reference.
{{ form_start(view, variables) }}
view
FormView
variables
array
default: []
Renders the HTML start tag of a form, more information in the Twig Form reference.
{{ form_end(view, variables) }}
view
FormView
variables
array
default: []
Renders the HTML end tag of a form together with all fields that have not been rendered yet, more information in the Twig Form reference.
{{ form_enctype(view) }}
view
FormView
Renders the required enctype="multipart/form-data"
attribute if the form contains at least one file upload field, more information in the Twig Form reference.
{{ form_widget(view, variables) }}
view
FormView
variables
array
default: []
Renders a complete form or a specific HTML widget of a field, more information in the Twig Form reference.
{{ form_errors(view) }}
view
FormView
Renders any errors for the given field or the global errors, more information in the Twig Form reference.
{{ form_label(view, label, variables) }}
view
FormView
label
string
default: null
variables
array
default: []
Renders the label for the given field, more information in the Twig Form reference.
{{ form_row(view, variables) }}
view
FormView
variables
array
default: []
Renders the row (the field’s label, errors and widget) of the given field, more information in the Twig Form reference.
{{ form_rest(view, variables) }}
view
FormView
variables
array
default: []
Renders all fields that have not yet been rendered, more information in the Twig Form reference.
{{ csrf_token(intention) }}
intention
string
Renders a CSRF token. Use this function if you want CSRF protection without creating a form.
{{ is_granted(role, object, field) }}
role
string
object
object
field
string
Returns true
if the current user has the required role. Optionally, an object can be pasted to be used by the voter. More information can be found in 在模板中进行权限控制.
注解
You can also pass in the field to use ACE for a specific field. Read more about this in Scope of Access Control Entries.
{{ logout_path(key) }}
key
string
Generates a relative logout URL for the given firewall.
{{ logout_url(key) }}
key
string
Equal to the logout_path function, but it’ll generate an absolute URL instead of a relative one.
{{ path(name, parameters, relative) }}
name
string
parameters
array
default: []
relative
boolean
default: false
Returns the relative URL (without the scheme and host) for the given route. If relative
is enabled, it’ll create a path relative to the current path. More information in 创建链接.
{{ url(name, parameters, schemeRelative) }}
name
string
parameters
array
default: []
schemeRelative
boolean
default: false
Returns the absolute URL (with scheme and host) for the given route. If schemeRelative
is enabled, it’ll create a scheme-relative URL. More information in 创建链接.
2.6 新版功能: The absolute_url
function was introduced in Symfony 2.7
{{ absolute_url(path) }}
path
string
Returns the absolute URL for the given absolute path. This is useful to convert an existing path:
{{ absolute_url(asset(path)) }}
2.6 新版功能: The relative_path
function was introduced in Symfony 2.7
{{ relative_path(path) }}
path
string
Returns a relative path for the given absolute path (based on the current request path). For instance, if the current path is /article/news/welcome.html
, the relative path for /article/image.png
is ../images.png
.
Creates an Expression
in Twig. See “Template Expressions”.
{{ text|humanize }}
text
string
Makes a technical name human readable (i.e. replaces underscores by spaces and capitalizes the string).
{{ message|trans(arguments, domain, locale) }}
message
string
arguments
array
default: []
domain
string
default: null
locale
string
default: null
Translates the text into the current language. More information in Translation Filters.
{{ message|transchoice(count, arguments, domain, locale) }}
message
string
count
integer
arguments
array
default: []
domain
string
default: null
locale
string
default: null
Translates the text with pluralization support. More information in Translation Filters.
{{ input|yaml_encode(inline, dumpObjects) }}
input
mixed
inline
integer
default: 0
dumpObjects
boolean
default: false
Transforms the input into YAML syntax. See Writing YAML Files for more information.
{{ value|yaml_dump(inline, dumpObjects) }}
value
mixed
inline
integer
default: 0
dumpObjects
boolean
default: false
Does the same as yaml_encode(), but includes the type in the output.
{{ class|abbr_class }}
class
string
Generates an <abbr>
element with the short name of a PHP class (the FQCN will be shown in a tooltip when a user hovers over the element).
{{ method|abbr_method }}
method
string
Generates an <abbr>
element using the FQCN::method()
syntax. If method
is Closure
, Closure
will be used instead and if method
doesn’t have a class name, it’s shown as a function (method()
).
{{ args|format_args }}
args
array
Generates a string with the arguments and their types (within <em>
elements).
{{ args|format_args_as_text }}
args
array
Equal to the format_args filter, but without using HTML tags.
{{ file|file_excerpt(line) }}
file
string
line
integer
Generates an excerpt of seven lines around the given line
.
{{ file|format_file(line, text) }}
file
string
line
integer
text
string
default: null
Generates the file path inside an <a>
element. If the path is inside the kernel root directory, the kernel root directory path is replaced by kernel.root_dir
(showing the full path in a tooltip on hover).
{{ text|format_file_from_text }}
text
string
Uses format_file to improve the output of default PHP errors.
{{ file|file_link(line) }}
line
integer
Generates a link to the provided file (and optionally line number) using a preconfigured scheme.
{% if choice is selectedchoice(selectedValue) %}
choice
ChoiceView
selectedValue
string
Checks if selectedValue
was checked for the provided choice field. Using this test is the most effective way.
The app
variable is available everywhere and gives access to many commonly needed objects and values. It is an instance of GlobalVariables
.
The available attributes are:
app.user
app.request
app.session
app.environment
app.debug
app.security
2.6 新版功能: The app.security
global is deprecated as of 2.6. The user is already available as app.user
and is_granted()
is registered as function.
The Symfony Standard Edition adds some bundles to the Symfony Core Framework. Those bundles can have other Twig extensions:
{% stylesheets %}
, {% javascripts %}
and {% image %}
tags. You can read more about them in the Assetic Documentation.