ModelData
class ModelData (View source)
A ModelData object is any object that can be rendered into a template/view.
A view interrogates the object being currently rendered in order to get data to render into the template. This data is provided and automatically escaped by ModelData. Any class that needs to be available to a view (controllers, DataObjects, page controls) should inherit from this class.
Traits
Allows an object to have extensions applied to it.
A class that can be instantiated or replaced via DI
Provides extensions to this object to integrate it with standard config API methods.
Allows an object to declare a set of custom methods
Config options
| extensions | array | An array of extension names and parameters to be applied to this object upon construction. |
from Extensible |
| unextendable_classes | array | Classes that cannot be extended |
from Extensible |
| casting | array | An array of DBField classes to cast certain fields to. This is set up as an array in the format: |
|
| default_cast | string|null | The default class to cast scalar fields to if casting information is not specified, and casting to an object is required. |
|
| require_sudo_mode | bool | Config of whether the model requires sudo mode to be active in order to be modified in admin Sudo mode is a security feature that requires the user to re-enter their password before making changes to the database. |
Properties
| protected static | array | $extra_methods | Custom method sources |
from CustomMethods |
| protected | array | $extra_method_registers | Name of methods to invoke by defineMethods for this instance |
from CustomMethods |
| protected static | array | $built_in_methods | Non-custom public methods. |
from CustomMethods |
| protected | Extension[] | $extension_instances | from Extensible | |
| protected | callable[][] | $beforeExtendCallbacks | List of callbacks to call prior to extensions having extend called on them, each grouped by methodName. |
from Extensible |
| protected | callable[][] | $afterExtendCallbacks | List of callbacks to call after extensions having extend called on them, each grouped by methodName. |
from Extensible |
| protected | ModelData|null | $failover | A failover object to attempt to get data from if it is not present on this object. |
|
| protected | ModelData|null | $customisedObject |
Methods
Attempts to locate and call a method dynamically added to a class at runtime if a default cannot be located
Register an callback to invoke that defines extra methods
Return TRUE if a method exists on this object
Determines if a custom method with this name is defined.
Get meta-data details on a named method
Return the names of all the methods available on this object
Get all public built in methods for this class
Find all methods on the given object.
Add all the methods from an object property.
Add all the methods from an object property (which is an Extension) to this object.
Add a wrapper method - a method which points to another method with a different name. For example, Thumbnail(x) can be wrapped to generateThumbnail(x)
Add callback as a method.
Allows user code to hook into Object::extend prior to control being delegated to extensions. Each callback will be reset once called.
Allows user code to hook into Object::extend after control being delegated to extensions. Each callback will be reset once called.
Adds any methods from Extension instances attached to this object.
Add an extension to a specific class.
No description
Get extra config sources for this class
Return TRUE if a class has a specified extension.
Calls a method if available on both this object and all applied Extensions, and then attempts to merge all results into an array
Run the given function on all of this object's extensions. Note that this method originally returned void, so if you wanted to return results, you're hosed
Get an extension instance attached to this object by name.
Returns TRUE if this object instance has a specific extension applied in $extension_instances. Extension instances are initialized at constructor time, meaning if you use add_extension() afterwards, the added extension will just be added to new instances of the extended class. Use the static method has_extension() to check if a class (not an instance) has a specific extension.
Get all extension instances for this specific object instance.
An implementation of the factory method, allows you to create an instance of a class
Creates a class instance by the "singleton" design pattern.
Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).
Gets the uninherited value for the given config option
Get the value of a property/field on this object. This will check if a method called get{$property} exists, then check if a field is available using ModelData::getField(), then fall back on a failover object.
Set a property/field on this object. This will check for the existence of a method called set{$property}, then use the ModelData::setField() method.
Set a failover object to attempt to get data from if it is not present on this object.
Check if a field exists on this object. This should be overloaded in child classes.
Get the value of a field on this object. This should be overloaded in child classes.
Set a field on this object. This should be overloaded in child classes.
Whether the model requires sudo mode to be active in order to be modified in admin
Merge some arbitrary data in with this object. This method returns a ModelDataCustomised instance with references to both this and the new custom data.
Return the HTML markup that represents this model when it is directly injected into a template (e.g. using $Me).
Return the "casting helper" (an injectable service name) for a field on this object. This helper will be a subclass of DBField.
Render this object into the template, and get the result as a string. You can pass one of the following as the $template parameter:
- a template name (e.g. Page)
- an array of possible template names - the first valid one will be used
- an SSViewer instance
Get a cached value from the field cache for a field
Store a value in the field cache for a field
Get the value of a field on this object, automatically inserting the value into any available casting objects that have been specified.
Checks if a given method/field has a valid value. If the result is an object, this will return the result of the exists method, otherwise will check if the result is not just an empty paragraph tag.
Flags provides the user with additional data about the current page status.
Get the HTML markup for rendering status flags for this model.
Find appropriate templates for SSViewer to use to render this object
When rendering some objects it is necessary to iterate over the object being rendered, to do this, you need access to itself.
Get part of the current classes ancestry to be used as a CSS class.
Return debug information about this object that can be rendered into a template
Details
mixed
__call(string $method, array $arguments)
Attempts to locate and call a method dynamically added to a class at runtime if a default cannot be located
You can add extra methods to a class using Extensions}, {@link Object::createMethod() or Object::addWrapperMethod()
defineMethods()
Add methods from the ModelData::$failover object
protected
registerExtraMethodCallback(string $name, callable $callback)
Register an callback to invoke that defines extra methods
bool
hasMethod(string $method)
Return TRUE if a method exists on this object
This should be used rather than PHP's inbuild method_exists() as it takes into account methods added via extensions
protected bool
hasCustomMethod($method)
Determines if a custom method with this name is defined.
protected array
getExtraMethodConfig(string $method)
Get meta-data details on a named method
array
allMethodNames(bool $custom = false)
Return the names of all the methods available on this object
static protected array
findBuiltInMethods(string|object $class = null)
Get all public built in methods for this class
protected array
findMethodsFrom(object $object)
Find all methods on the given object.
protected
addMethodsFrom(string $property, string|int $index = null)
Add all the methods from an object property.
protected
removeMethodsFrom(string $property, string|int $index = null)
Add all the methods from an object property (which is an Extension) to this object.
protected
addWrapperMethod(string $method, string $wrap)
Add a wrapper method - a method which points to another method with a different name. For example, Thumbnail(x) can be wrapped to generateThumbnail(x)
protected
addCallbackMethod(string $method, callable $callback)
Add callback as a method.
protected
beforeExtending(string $method, callable $callback)
Allows user code to hook into Object::extend prior to control being delegated to extensions. Each callback will be reset once called.
protected
afterExtending(string $method, callable $callback)
Allows user code to hook into Object::extend after control being delegated to extensions. Each callback will be reset once called.
protected
defineExtensionMethods()
Adds any methods from Extension instances attached to this object.
All these methods can then be called directly on the instance (transparently mapped through __call()}), or called explicitly through {@link extend().
static bool
add_extension(string $classOrExtension, string $extension = null)
Add an extension to a specific class.
The preferred method for adding extensions is through YAML config, since it avoids autoloading the class, and is easier to override in more specific configurations.
As an alternative, extensions can be added to a specific class directly in the Object::$extensions array. See SiteTree::$extensions for examples. Keep in mind that the extension will only be applied to new instances, not existing ones (including all instances created through singleton()).
static
remove_extension(string $extension)
Remove an extension from a class.
Note: This will not remove extensions from parent classes, and must be called directly on the class assigned the extension.
Keep in mind that this won't revert any datamodel additions of the extension at runtime, unless its used before the schema building kicks in (in your _config.php). Doesn't remove the extension from any Object instances which are already created, but will have an effect on new extensions. Clears any previously created singletons through singleton() to avoid side-effects from stale extension information.
static array
get_extensions(string $class = null, bool $includeArgumentString = false)
No description
static array|null
get_extra_config_sources(string $class = null)
Get extra config sources for this class
static bool
has_extension(string $classOrExtension, string $requiredExtension = null, bool $strict = false)
Return TRUE if a class has a specified extension.
This supports backwards-compatible format (static Object::has_extension($requiredExtension)) and new format ($object->has_extension($class, $requiredExtension))
array
invokeWithExtensions(string $method, mixed ...$arguments)
Calls a method if available on both this object and all applied Extensions, and then attempts to merge all results into an array
array
extend(string $method, mixed ...$arguments)
Run the given function on all of this object's extensions. Note that this method originally returned void, so if you wanted to return results, you're hosed
Currently returns an array, with an index resulting every time the function is called. Only adds returns if they're not NULL, to avoid bogus results from methods just defined on the parent extension. This is important for permission-checks through extend, as they use min() to determine if any of the returns is FALSE. As min() doesn't do type checking, an included NULL return would fail the permission checks.
The extension methods are defined during __construct()} in {@link defineMethods().
Extension|null
getExtensionInstance(string $extension)
Get an extension instance attached to this object by name.
bool
hasExtension(string $extension)
Returns TRUE if this object instance has a specific extension applied in $extension_instances. Extension instances are initialized at constructor time, meaning if you use add_extension() afterwards, the added extension will just be added to new instances of the extended class. Use the static method has_extension() to check if a class (not an instance) has a specific extension.
Caution: Don't use singleton(
Extension[]
getExtensionInstances()
Get all extension instances for this specific object instance.
See get_extensions() to get all applied extension classes for this class (not the instance).
This method also provides lazy-population of the extension_instances property.
static Injectable
create(mixed ...$args)
An implementation of the factory method, allows you to create an instance of a class
This method will defer class substitution to the Injector API, which can be customised via the Config API to declare substitution classes.
This can be called in one of two ways - either calling via the class directly, or calling on Object and passing the class name as the first parameter. The following are equivalent: $list = DataList::create(SiteTree::class); $list = SiteTree::get();
static Injectable
singleton(string $class = null)
Creates a class instance by the "singleton" design pattern.
It will always return the same instance for this class, which can be used for performance reasons and as a simple way to access instance methods which don't rely on instance data (e.g. the custom SilverStripe static handling).
static Config_ForClass
config()
Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).
mixed
uninherited(string $name)
Gets the uninherited value for the given config option
__construct()
No description
bool
__isset(string $property)
Check if a field exists on this object or its failover.
Note that, unlike the core isset() implementation, this will return true if the property is defined and set to null.
mixed
__get(string $property)
Get the value of a property/field on this object. This will check if a method called get{$property} exists, then check if a field is available using ModelData::getField(), then fall back on a failover object.
void
__set(string $property, mixed $value)
Set a property/field on this object. This will check for the existence of a method called set{$property}, then use the ModelData::setField() method.
void
setFailover(ModelData $failover)
Set a failover object to attempt to get data from if it is not present on this object.
ModelData|null
getFailover()
Get the current failover object if set
bool
hasField(string $fieldName)
Check if a field exists on this object. This should be overloaded in child classes.
mixed
getField(string $fieldName)
Get the value of a field on this object. This should be overloaded in child classes.
ModelData
setField(string $fieldName, mixed $value)
Set a field on this object. This should be overloaded in child classes.
mixed
getDynamicData(string $field)
No description
ModelData
setDynamicData(string $field, mixed $value)
No description
bool
hasDynamicData(string $field)
No description
bool
getRequireSudoMode()
Whether the model requires sudo mode to be active in order to be modified in admin
ModelData
customise(ModelData $data)
Merge some arbitrary data in with this object. This method returns a ModelDataCustomised instance with references to both this and the new custom data.
Note that any fields you specify will take precedence over the fields on this object.
bool
exists()
Return true if this object "exists" i.e. has a sensible value
This method should be overridden in subclasses to provide more context about the classes state. For example, a DataObject class could return false when it is deleted from the database
string
__toString()
Return the class name (though subclasses may return something else)
string
forTemplate()
Return the HTML markup that represents this model when it is directly injected into a template (e.g. using $Me).
By default this attempts to render the model using templates based on the class hierarchy.
ModelData|null
getCustomisedObj()
No description
setCustomisedObj(ModelData $object)
No description
string|null
castingHelper(string $field)
Return the "casting helper" (an injectable service name) for a field on this object. This helper will be a subclass of DBField.
DBHTMLText
renderWith(string|array|SSViewer $template, ModelData|array $customFields = [])
Render this object into the template, and get the result as a string. You can pass one of the following as the $template parameter:
- a template name (e.g. Page)
- an array of possible template names - the first valid one will be used
- an SSViewer instance
mixed
objCacheGet(string $fieldName, array $arguments = [])
Get a cached value from the field cache for a field
ModelData
objCacheSet(string $fieldName, array $arguments, mixed $value)
Store a value in the field cache for a field
ModelData
objCacheClear()
Clear object cache
object|null
obj(string $fieldName, array $arguments = [], bool $cache = false)
Get the value of a field on this object, automatically inserting the value into any available casting objects that have been specified.
bool
hasValue(string $field, array $arguments = [], bool $cache = true)
Checks if a given method/field has a valid value. If the result is an object, this will return the result of the exists method, otherwise will check if the result is not just an empty paragraph tag.
array
getStatusFlags(bool $cached = true)
Flags provides the user with additional data about the current page status.
Mostly this is used for versioning, but can be used for other purposes (e.g. localisation). Each page can have more than one status flag.
Returns an associative array of a unique key to a (localized) title for the flag. The unique key can be reused as a CSS class.
Example (simple): "deletedonlive" => "Deleted"
Example (with optional title attribute): "deletedonlive" => ['text' => "Deleted", 'title' => 'This page has been deleted']
string
getStatusFlagMarkup(string $additionalCssClass = '')
Get the HTML markup for rendering status flags for this model.
array
getViewerTemplates(string $suffix = '')
Find appropriate templates for SSViewer to use to render this object
ModelData
Me()
When rendering some objects it is necessary to iterate over the object being rendered, to do this, you need access to itself.
string
CSSClasses(string $stopAtClass = ModelData::class)
Get part of the current classes ancestry to be used as a CSS class.
This method returns an escaped string of CSS classes representing the current classes ancestry until it hits a stop point - e.g. "Page DataObject ModelData".
ModelData|string
Debug()
Return debug information about this object that can be rendered into a template
ModelData
flushCache()
Clears record-specific cached data.