An overview of all configuration options in the Nette Framework.
constants: Defines PHP constants
di: DI Container
extensions: Install additional DI extensions
http: HTTP Headers
includes: Including files
php: PHP configuration options
search: Automatic service registration
security: Access Control
tracy: Tracy Debugger
Basic settings for Nette Application.
application: # shows "Nette Application" panel in Tracy BlueScreen? debugger: ... # (bool) defaults to true # will error-presenter be called on error? catchExceptions: ... # (bool) defaults to true in production mode # name of error-presenter errorPresenter: Error # (string) defaults to 'Nette:Error' # do bad links generate warnings? # has effect only in developer mode silentLinks: ... # (bool) defaults to false
Because error-presenters are not called by default in development mode and the errors are displayed by Tracy, changing the
true helps to verify that error-presenters works correct during
silentLinks determines how Nette behaves in developer mode when link generation fails (for example, because
there is no presenter, etc). The default value
false means that Nette triggers
true suppresses this error message. In a production environment,
E_USER_WARNING is always invoked. We
can also influence this behavior by setting the presenter variable $invalidLinkMode.
Defines the rules according to which the name of the class (for example
derived from the name of the presenter (for example
Homepage). This the mapping can be achieved with the following
application: mapping: *: App\Presenters\*Presenter
The presenter name is replaced with an asterisk and the result is the class name. Easy!
If we divide presenters into modules, we can have our own mapping for each module:
application: mapping: Front: App\FrontModule\*Presenter Admin: App\AdminModule\*Presenter Error: App\Error\*Presenter
Front:Homepage maps to class
App\FrontModule\HomepagePresenter and presenter
Admin:Dashboard to class
It will be more handy to create a general (asterisk) rule that will replace the first two rules and add an extra asterisk just for the module:
application: mapping: *: App\*Module\*Presenter Error: App\ModuleError\*Presenter
Again, the presenter
Front:Homepage maps to the class
But what if we use nested modules and have a presenter
Admin:User:Edit? In this case, the segment with an asterisk
representing the module for each level is simply repeated and the result is class
An alternative notation is to use an array consisting of three segments instead of a string:
application: mapping: *: [App, *Module, *Presenter]
Even in this case, the result will be class
The default value is
Automatic Registration of Presenters
Nette automatically adds presenters as services to the DI container, which significantly speeds up their creation. How Nette finds out presenters can be configured:
application: # to look for presenters in Composer class map? scanComposer: ... # (bool) defaults to true # what string must contain the class and file name? scanFilter: ... # (string) defaults to 'Presenter' # in which directories to look for presenters? scanDirs: # (string|false) defaults to '%appDir%' - %vendorDir%/mymodule
The directories listed in
scanDirs do not override the default value
%appDir%, but complement it, so
scanDirs will contain both paths
%vendorDir%/mymodule. If we want to overwrite
the default directory, we use exclamation mark:
application: scanDirs!: - %vendorDir%/mymodule
Directory scanning can be turned off by setting false. We do not recommend completely suppressing the automatic addition of presenters, otherwise application performance will be reduced.
Creating PHP constants.
constants: FOOBAR: 'baz'
FOOBAR constant will created after startup.
The configuration for one or more database connections for Nette Database.
database: # DSN, only mandatory key dsn: "sqlite:%appDir%/Model/demo.db" user: ... password: ...
It creates services of type
Nette\Database\Connection and also
Nette\Database\Context for the Database Explorer layer. The database connection is usually passed by autowiring, if this is
not possible, use the service names
database: # shows database panel in Tracy Bar? debugger: ... # (bool) defaults to true # shows query EXPLAIN in Tracy Bar? explain: ... # (bool) defaults to true # to enable autowiring for this connection? autowired: ... # (bool) defaults to true for first connection # table conventions: discovered, static, or class name conventions: discovered # (string) defaults to 'discovered' options: # to connect to the database only when needed? lazy: ... # (bool) defaults to false # PHP database driver class driverClass: # (string) # you can list the options found in the PDO driver documentation PDO::MYSQL_ATTR_COMPRESS: true
In the configuration file we can define more database connections by dividing them into named sections:
database: main: dsn: 'mysql:host=127.0.0.1;dbname=test' user: root password: password another: dsn: 'sqlite::memory:'
Each defined connection creates services that includes section name in their name, ie
@database.main.context and further
Autowiring is enabled only for services from the first section. This can be changed with
autowired: false or
autowired: true. Non-autowired services are passed by name:
services: - UserManager(@database.another.connection)
How to bulk edit all services of a certain type? Need to call a certain method for all presenters inheriting from a particular common ancestor? That's where the decorator comes from.
decorator: # for all services that are instances of this class or interface App\Presenters\BasePresenter: setup: - setProjectId(10) # call this method - $absoluteUrls = true # and set the variable
Decorator can also be used to set tags or turn on inject mode.
decorator: InjectableInterface: tags: [mytag: 1] inject: true
Technical settings of the DI container.
di: # shows DIC in Tracy Bar? debugger: ... # (bool) defaults to true # parameter types that you never autowire excluded: ... # (string) # the class from which the DI container inherits parentClass: ... # (string) defaults to Nette\DI\Container
A big part of the DI container class is metadata. You can shrink this class by disabling parameter passing if you're not using
$container->parameters, tag passing, not calling
$container->findByTag(), and significantly reduce
metadata for autowiring by listing the classes you use as parameters for method
di: export: # to export parameters? parameters: false # (bool) defaults to true # export tags and which ones? tags: false # (string|bool) the default is all # export data for autowiring and which? types: # (string|bool) the default is all - Nette\Database\Connection - Nette\Application\Application
Registration of other DI extensions. In this way we add, for exammple, DI extension
Dibi\Bridges\Nette\DibiExtension22 under the name
extensions: dibi: Dibi\Bridges\Nette\DibiExtension22
Then we configure it in it's section called also
dibi: host: localhost
You can also add a extension class with parameters:
extensions: application: Nette\Bridges\ApplicationDI\ApplicationExtension(%debugMode%, %appDir%, %tempDir%/cache)
You can change the default form error messages in the configuration file.
forms: messages: EQUAL: 'Please enter %s.' NOT_EQUAL: 'This value should not be %s.' FILLED: 'This field is required.' BLANK: 'This field should be blank.' MIN_LENGTH: 'Please enter at least %d characters.' MAX_LENGTH: 'Please enter no more than %d characters.' LENGTH: 'Please enter a value between %d and %d characters long.' EMAIL: 'Please enter a valid email address.' URL: 'Please enter a valid URL.' INTEGER: 'Please enter a valid integer.' FLOAT: 'Please enter a valid number.' MIN: 'Please enter a value greater than or equal to %d.' MAX: 'Please enter a value less than or equal to %d.' RANGE: 'Please enter a value between %d and %d.' MAX_FILE_SIZE: 'The size of the uploaded file can be up to %d bytes.' MAX_POST_SIZE: 'The uploaded data exceeds the limit of %d bytes.' MIME_TYPE: 'The uploaded file is not in the expected format.' IMAGE: 'The uploaded file must be image in format JPEG, GIF, PNG or WebP.' Nette\Forms\Controls\SelectBox::VALID: 'Please select a valid option.' Nette\Forms\Controls\UploadControl::VALID: 'An error occurred during file upload.' Nette\Forms\Controls\CsrfProtection::PROTECTION: 'Your session has expired. Please return to the home page and try again.'
http: # headers that are sent with each request headers: X-Powered-By: MyCMS X-Content-Type-Options: nosniff X-XSS-Protection: '1; mode=block' # affects header X-Frame-Options frames: ... # (string|bool) defaults to 'SAMEORIGIN'
For security reasons, the framework sends a header
X-Frame-Options: SAMEORIGIN, which says that a page can be
displayed inside another page (in element
<iframe>) only if it is on the same domain. This can be unwanted in
certain situations (for example, if you are developing a Facebook application), so the behavior can be changed by setting
frames: http://allowed-host.com or
Content-Security-Policy (hereinafter referred to as CSP) can be easily assembled, their description can be
found in documentation. CSP directives (such as
script-src) can be
written either as strings according to specification or as arrays of values for better readability. Then there is no need to
write quotation marks around keywords such as
'self'. Nette will also automatically generate a value of
'nonce-y4PopTLM==' will be send in the header.
http: # Content Security Policy csp: # string according to CSP specification default-src: "'self' https://example.com" # array of values script-src: - nonce - strict-dynamic - self - https://example.com # bool in the case of switches upgrade-insecure-requests: true block-all-mixed-content: false
<script n:nonce>...</script> in the templates and the nonce value will be filled in automatically.
Making secure websites in Nette is really easy.
Content-Security-Policy-Report-Only (which can be used in parallel with CSP) and Feature Policy can be added:
http: # Content Security Policy Report-Only cspReportOnly: default-src: self report-uri: 'https://my-report-uri-endpoint' # Feature Policy featurePolicy: unsized-media: none geolocation: - self - https://example.com
By default, method
Nette\Http\Response::setCookie() sends a cookie with the following parameters:
- with scope for current domain (but not subdomains)
- and all directories (
Path = '/')
- with flag
- without flag
- without flag
This behavior can be changed by configuration:
http: # to send cookies only via HTTPS? cookieSecure: ... # (bool|auto) defaults to false
If the site is running behind an HTTP proxy, enter its IP address in order to correctly detect the IP address of the client
http: # IP address, range, hostname or array of these values proxy: 127.0.0.1 # (string|string) defaults to none
Additional configuration files can be inserted in the
includes: - parameters.php - services.neon - presenters.neon
parameters.php is not a typo, the configuration can also be written in a PHP file, which returns it as
<?php return [ 'database' => [ 'main' => [ 'dsn' => 'sqlite::memory:', ], ], ];
If items with the same keys appear within configuration files, they will be overwritten or merged in the case of arrays. Later included file
has a higher priority than the previous one. The file in which the
includes section is listed has a higher priority
than the files included in it.
This setting globally affects the behavior of Latte in components and presenters.
latte: # switches Latte to XHTML mode xhtml: ... # (bool) defaults to false # generates templates with declare(strict_types=1) strictTypes: ... # (bool) defaults to false # class of $this->template templateClass: App\MyTemplateClass # defaults to Nette\Bridges\ApplicationLatte\Template
It is also possible to register new tags either by entering the class name or by referring to the service. Method
install() is called by default, but this can be changed by specifying the name of another method:
latte: # registration of user Latte tags macros: - App\MyLatteMacros::register # static method, classname or callable - @App\MyLatteMacrosFactory # service with install method - @App\MyLatteMacrosFactory::register # service with register method services: - App\MyLatteMacrosFactory
mail: # use SmtpMailer smtp: true # (bool) defaults to false host: ... # (string) port: ... # (int) username: ... # (string) password: ... # (string) timeout: ... # (int) secure: ... # (ssl|tls|null) defaults to null clientHost: ... # (string) defaults to $_SERVER['HTTP_HOST'] persistent: ... # (bool) defaults to false # context for connecting to the SMTP server, see stream_context_create() context: # (array) defaults to stream_context_get_default()
To increase trustfulness, we can sign emails using DKIM technology:
mail: dkim: domain: myweb.com selector: lovenette privateKey: %appDir%/cert/dkim.priv passPhrase: ... testMode: ...
You can define parameters that can then be used as part of service definitions. This can help to separate out values that you will want to change more regularly.
parameters: dsn: 'mysql:host=127.0.0.1;dbname=test' user: root password: secret
You can refer to
foo parameter via
%foo% elsewhere in any config file. They can also be used inside
Parameters do not need to be just strings, they can also be array values:
parameters: mailer: host: smtp.example.com secure: ssl user: email@example.com languages: [cs, en, de]
You can refer to single key as
To write a string containing
%, you must escape the character by doubling to
If you need to get the value of any parameter in your code, for example in your class, then pass it to this class. For example, in the constructor. There is no global configuration object which can classes query for parameter values. This would be against to the principle of dependency injection.
You can set PHP directives. An overview of all directives can be found at php.net.
php: date.timezone: Europe/Prague
routing: # shows routing panel in Tracy Bar? debugger: ... # (bool) defaults to true # to serialize router to DI container? cache: ... # (bool) defaults to false
Router is usually defined in the RouterFactory class, a more limited alternative can be defined in the configuration file using
routing: routes: 'detail/<id>': Admin:Home:default '<presenter>/<action>': Front:Home:default
The automatic adding of services to the DI container makes work extremely pleasant. Nette automatically adds presenters to the container, but you can easily add any other classes.
Just specify in which directories (and subdirectories) the classes should be search for:
search: # you choose the section names yourself myForms: in: %appDir%/Forms model: in: %appDir%/Model
Usually, however, we don't want to add all the classes and interfaces, so we can filter them:
search: myForms: in: %appDir%/Forms # filtering by file name (string|string) files: - *Factory.php # filtering by class name (string|string) classes: - *Factory
Or we can select classes that inherit or implement at least one of the following classes:
search: myForms: extends: - App\*Form implements: - App\*FormInterface
You can also define negative rules, ie class name masks or ancestors and if they comply, the service will not be added to the DI container:
search: myForms: exclude: classes: ... extends: ... implements: ...
Tags can be set for added services:
search: myForms: tags: ...
Security: Access Control
You can define a list of users in the configuration file to create a simple authenticator
Nette\Security\SimpleAuthenticator). Because passwords are readable in the configuration file, this solution is for
testing purposes only.
security: # shows user panel in Tracy Bar? debugger: ... # (bool) defaults to true users: # name and password johndoe: secret123 # name, password, role and other data available in the identity janedoe: password: secret123 roles: [admin] data: ...
session: # shows session panel in Tracy Bar? debugger: ... # (bool) defaults to false # inactivity time after which the session expires expiration: 14 days # (string) defaults to '3 hours' # start session automatically? # 'smart' starts a session if it is already created autoStart: ... # (bool|smart) defaults to 'smart'
The cookie settings are taken from the HTTP cookie settings, you can also adjust options
cookieDomain option specifies which hosts are allowed to receive the cookie. If unspecified, it defaults to
the same host that set the cookie, excluding subdomains. If
cookieDomain is specified, then subdomains are
always included. Therefore, specifying
cookieDomain is less restrictive than omitting it. For example, if
cookieDomain: nette.org is set, then cookies are available on subdomains like
doc.nette.org. The same
thing can be achieved by
cookieSamesite option lets servers require that a cookie shouldn't be sent with cross-origin requests, which
provides some protection against cross-site request forgery attacks (CSRF). Possible values are Strict, Lax, and None.
session: # which hosts are allowed to receive the cookie cookieDomain: 'example.com' # (string) defaults to unset # require that a cookie shouldn't be sent with cross-origin requests? cookieSamesite: Lax # (Strict|Lax|None) defaults to unset
session: # 'session.name' written as 'name' name: MYID # 'session.save_path' written as 'savePath' savePath: "%tempDir%/sessions"
You can set the Tracy parameters in the configuration file and also add new panels to the Tracy Bar. These settings are applied only after the DI container has been created, so errors that occurred earlier cannot reflect them.
Error logging configuration:
tracy: # if error has occurred the notification is sent to this email email: firstname.lastname@example.org # (string|string) defaults to unset # email sender fromEmail: email@example.com # (string) defaults to unset # to use a mailer defined in the configuration? (since Tracy 2.5) netteMailer: ... # (bool) defaults to true # for which error levels is BlueScreen also logged? logSeverity: [E_WARNING, E_NOTICE] # defaults to 
Configuration for function
tracy: # maximum string length maxLength: 150 # (int) default according to Tracy # how deep will list maxDepth: 10 # (int) default according to Tracy # maximum number of elements in array or object (since Tracy 2.9) maxItems: 100 # (int) default according to Tracy # hide values of these keys (since Tracy 2.9) keysToHide: [password, pass] # (string) defaults to  # visual theme (od Tracy 2.9) theme: dark # (light|dark) defaults to 'light' # displays the location where dump() was called? showLocation: ... # (bool) default according to Tracy
To install the Tracy extension:
tracy: # appends bars to Tracy Bar bar: - Nette\Bridges\DITracy\ContainerPanel - IncludePanel - XDebugHelper('myIdeKey') - MyPanel(@MyService) # append panels to BlueScreen blueScreen: - DoctrinePanel::renderException
tracy: # in Development mode, you will see notice or error warnings as BlueScreen strictMode: ... # (bool) defaults to true # displays silent (@) error messages scream: ... # (bool) defaults to false # link format to open in the editor editor: .... # (string) defaults to 'editor://open/?file=%file&line=%line' # path to template with custom page for error 500 errorTemplate: ... # (string) defaults to unset # shows Tracy Bar? showBar: ... # (bool) defaults to true editorMapping: # original: new /var/www/html: /data/web /home/web: /srv/html
Services and Modifications
The configuration file is a place where we add the definitions of our own services in section
A detailed description can be found in chapter Services.
For example, this is the definition of service named
database which is
services: database: PDO('mysql:host=127.0.0.1;dbname=test', root, password)
There are also a number of system and extensions services in the DI container. The definitions of
these services can be changed in the configuration. For example, we can change the class of service
application.application, which is by default
services: application.application: factory: MyApplication alteration: true
alteration flag is informative and says we only modify an existing service.
We can also add setup:
services: application.application: factory: MyApplication alteration: true setup: - $onStartup = [@resource::init]
You can also remove a system service from the container:
services: cache.journal: false