DBString

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 {@link Extensions}, {@link Object::createMethod()} or {@link Object::addWrapperMethod()}

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

Return the names of all the methods available on this object

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 {@link Object::$extensions} array. See {@link SiteTree::$extensions} for examples. Keep in mind that the extension will only be applied to new instances, not existing ones (including all instances created through {@link singleton()}).

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 {@link Object} instances which are already created, but will have an effect on new extensions. Clears any previously created singletons through {@link singleton()} to avoid side-effects from stale extension information.

Get extra config sources for this class

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))

Calls a method if available on both this object and all applied {@link 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

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 {@link __construct()} in {@link defineMethods()}.

Get an extension instance attached to this object by name.

Returns TRUE if this object instance has a specific extension applied in {@link $extension_instances}. Extension instances are initialized at constructor time, meaning if you use {@link add_extension()} afterwards, the added extension will just be added to new instances of the extended class. Use the static method {@link has_extension()} to check if a class (not an instance) has a specific extension.

Caution: Don't use singleton()->hasExtension() as it will give you inconsistent results based on when the singleton was first accessed.

Get all extension instances for this specific object instance.

See {@link 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.

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'); $list = SiteTree::get();

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).

Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).

Get inherited config value

Gets the uninherited value for the given config option

Update the config value for a given property

Set the default value for "nullify empty"

{@inheritDoc}

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.

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 {@link ViewableData::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 {@link ViewableData::setField()} method.

Set a failover object to attempt to get data from if it is not present on this object.

Get the current failover object if set

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.

Add methods from the {@link ViewableData::$failover} object, as well as wrapping any methods prefixed with an underscore into a {@link ViewableData::cachedCall()}.

Merge some arbitrary data in with this object. This method returns a {@link ViewableData_Customised} 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.

(non-PHPdoc)

Return the "casting helper" (a piece of PHP code that when evaluated creates a casted value object) for a field on this object. This helper will be a subclass of DBField.

Get the class name a field on this object will be casted to.

Return the string-format type for the given field.

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 the value of a field on this object, automatically inserting the value into any available casting objects that have been specified.

A simple wrapper around {@link ViewableData::obj()} that automatically caches the result so it can be used again without re-running the method.

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.

Get the string value of a field on this object that has been suitable escaped to be inserted directly into a template.

Get an array of XML-escaped values by field name

Return a single-item iterator so you can iterate over the fields of a single record.

This is useful so you can use a single record inside a <% control %> block in a template - and then use to access individual fields on this object.

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.

Return the directory if the current active theme (relative to the site root).

This method is useful for things such as accessing theme images from your template without hardcoding the theme page - e.g. .

This method should only be used when a theme is currently active. However, it will fall over to the current project directory.

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 ViewableData".

Return debug information about this object that can be rendered into a template

Create a DBField object that's not bound to any particular field.

Useful for accessing the classes behaviour for other parts of your code.

Set the name of this field.

The name should never be altered, but it if was never given a name in the first place you can set a name.

If you try an alter the name a warning will be thrown.

Returns the name of this field.

Returns the value of this field.

Set the value of this field in various formats.

Used by {@link DataObject->getField()}, {@link DataObject->setCastedField()} {@link DataObject->dbObject()} and {@link DataObject->write()}.

As this method is used both for initializing the field after construction, and actually changing its values, it needs a {@link $markChanged} parameter.

Get default value assigned at the DB level

Set default value to use at the DB level

Update the optional parameters for this field.

Get optional parameters for this field

Set the desired index type to use

Return the desired index type to use. Will return false if the field instance should not be indexed.

Return the transformed value ready to be sent to the database. This value will be escaped automatically by the prepared query processor, so it should not be escaped or quoted at all.

Prepare the current field for usage in a database-manipulation (works on a manipulation reference).

Make value safe for insertion into a SQL SET statement by applying addslashes() - can also be used to apply special SQL-commands to the raw value (e.g. for GIS functionality). {see \SilverStripe\ORM\FieldType\prepValueForDB}

Add custom query parameters for this field, mostly SELECT statements for multi-value fields.

By default, the ORM layer does a SELECT .* which gets you the default representations of all columns.

Assign this DBField to a table

Get the table this field belongs to, if assigned

Gets the value appropriate for a HTML attribute string

urlencode this string

rawurlencode this string

Gets the value appropriate for a HTML attribute string

Gets the raw value for this field.

Note: Skips processors implemented via forTemplate()

Gets javascript string literal value

Return JSON encoded value

Alias for {see XML()}

XML encode this value

Safely escape for XML string

Returns the value to be set in the database to blank this field.

Usually it's a choice between null, 0, and ''

Saves this field to the given data object.

Returns a FormField instance used as a default for form scaffolding.

Used by {@link SearchContext}, {@link ModelAdmin}, {@link DataObject::scaffoldFormFields()}

Returns a FormField instance used as a default for searchform scaffolding.

Used by {@link SearchContext}, {@link ModelAdmin}, {@link DataObject::scaffoldFormFields()}.

Add the field to the underlying database.

Get formfield schema value

Returns the index specifications for the field instance, for example:

[ 'type' => 'unique', 'columns' => ['FieldName'] ]

Whether or not this DBField only accepts scalar values.

Composite DBFields can override this method and return false so they can accept arrays of values.

Set whether this field stores empty strings rather than converting them to null.

Get whether this field stores empty strings rather than converting them to null

Limit this field's content by a number of characters.

This makes use of strip_tags() to avoid malforming the HTML tags in the string of text.

Limit this field's content by a number of characters and truncate the field to the closest complete word. All HTML tags are stripped from the field.

Limit this field's content by a number of words.

Converts the current value for this StringField to lowercase.

Converts the current value for this StringField to uppercase.

Plain text version of this string