class AssetControlExtension extends DataExtension (View source)

This class provides the necessary business logic to ensure that any assets attached to a record are safely deleted, published, or protected during certain operations.

This class will respect the canView() of each object, and will use it to determine whether or not public users can access attached assets. Public and live records will have their assets promoted to the public store.

Assets which exist only on non-live stages will be protected.

Assets which are no longer referenced will be flushed via explicit delete calls to the underlying filesystem.

Properties

DataObject|Versioned $owner

A {see \SilverStripe\ORM\DataObject}, potentially decorated with {see \SilverStripe\Versioned\Versioned} extension.

static private bool $keep_archived_assets

When archiving versioned dataobjects, should assets be archived with them? If false, assets will be deleted when the dataobject is archived.

Methods

__construct()

No description

static 
add_to_class(string $class, string $extensionClass, mixed $args = null)

Called when this extension is added to a particular class

setOwner(object $owner)

Set the owner of this extension.

mixed
withOwner(mixed $owner, callable $callback, array $args = [])

Temporarily modify the owner. The original owner is ensured to be restored

clearOwner()

Clear the current owner, and restore extension to the state prior to the last setOwner()

object
getOwner()

Returns the owner of this extension.

static string
get_classname_without_arguments(string $extensionStr)

Helper method to strip eval'ed arguments from a string that's passed to {@link DataObject::$extensions} or {@link Object::add_extension()}.

static 
unload_extra_statics($class, $extension) deprecated

No description

validate(ValidationResult $validationResult)

Hook for extension-specific validation.

augmentSQL(SQLSelect $query, DataQuery $dataQuery = null)

Edit the given query object to support queries for this extension

augmentDatabase()

Update the database schema as required by this extension.

augmentWrite(array $manipulation)

Augment a write-record request.

onBeforeWrite()

Ensure that changes to records flush overwritten files, and update the visibility of other assets.

onAfterWrite()

Extend the owner's onAfterWrite() logic

onBeforeDelete()

Extend the owner's onBeforeDelete() logic

onAfterDelete()

Ensure that deletes records remove their underlying file assets, without affecting other staged records.

requireDefaultRecords()

Extend the owner's requireDefaultRecords() logic

populateDefaults()

Extend the owner's populateDefaults() logic

onAfterBuild()

Extend the owner's onAfterBuild() logic

bool|null
can(Member $member)

Influence the owner's can() permission check value to be disallowed (false), allowed (true) if no other processed results are to disallow, or open (null) to not affect the outcome.

bool|null
canEdit(Member $member)

Influence the owner's canEdit() permission check value to be disallowed (false), allowed (true) if no other processed results are to disallow, or open (null) to not affect the outcome.

bool|null
canDelete(Member $member)

Influence the owner's canDelete() permission check value to be disallowed (false), allowed (true) if no other processed results are to disallow, or open (null) to not affect the outcome.

bool|null
canCreate(Member $member)

Influence the owner's canCreate() permission check value to be disallowed (false), allowed (true) if no other processed results are to disallow, or open (null) to not affect the outcome.

array
extraStatics(string $class = null, string $extension = null)

Define extra database fields

updateCMSFields(FieldList $fields)

This function is used to provide modifications to the form in the CMS by the extension. By default, no changes are made. {@link DataObject->getCMSFields()}.

void
updateCMSCompositeValidator(CompositeValidator $compositeValidator)

This function is used to provide modifications to the Validators used on a DataObject.

updateFrontEndFields(FieldList $fields)

This function is used to provide modifications to the form used for front end forms. {@link DataObject->getFrontEndFields()}

updateCMSActions(FieldList $actions)

This is used to provide modifications to the form actions used in the CMS. {@link DataObject->getCMSActions()}.

updateSummaryFields(array $fields)

this function is used to provide modifications to the summary fields in CMS by the extension By default, the summaryField() of its owner will merge more fields defined in the extension's $extra_fields['summary_fields']

updateFieldLabels(array $labels)

this function is used to provide modifications to the fields labels in CMS by the extension By default, the fieldLabels() of its owner will merge more fields defined in the extension's $extra_fields['field_labels']

Details

__construct()

static add_to_class(string $class, string $extensionClass, mixed $args = null)

Called when this extension is added to a particular class

Parameters

string $class
string $extensionClass
mixed $args

setOwner(object $owner)

Set the owner of this extension.

Parameters

object $owner

The owner object

mixed withOwner(mixed $owner, callable $callback, array $args = [])

Temporarily modify the owner. The original owner is ensured to be restored

Parameters

mixed $owner

Owner to set

callable $callback

Callback to invoke

array $args

Args to pass to callback

Return Value

mixed

clearOwner()

Clear the current owner, and restore extension to the state prior to the last setOwner()

object getOwner()

Returns the owner of this extension.

Return Value

object

static string get_classname_without_arguments(string $extensionStr)

Helper method to strip eval'ed arguments from a string that's passed to {@link DataObject::$extensions} or {@link Object::add_extension()}.

Parameters

string $extensionStr

E.g. "Versioned('Stage','Live')"

Return Value

string

Extension classname, e.g. "Versioned"

static unload_extra_statics($class, $extension) deprecated

deprecated 4.7.0 No longer used by internal code

Parameters

$class
$extension

validate(ValidationResult $validationResult)

Hook for extension-specific validation.

Parameters

ValidationResult $validationResult

Local validation result

Exceptions

ValidationException

augmentSQL(SQLSelect $query, DataQuery $dataQuery = null)

Edit the given query object to support queries for this extension

Parameters

SQLSelect $query

Query to augment.

DataQuery $dataQuery

Container DataQuery for this SQLSelect

augmentDatabase()

Update the database schema as required by this extension.

When duplicating a table's structure, remember to duplicate the create options as well. See {@link Versioned->augmentDatabase} for an example.

augmentWrite(array $manipulation)

Augment a write-record request.

Parameters

array $manipulation

Array of operations to augment.

onBeforeWrite()

Ensure that changes to records flush overwritten files, and update the visibility of other assets.

onAfterWrite()

Extend the owner's onAfterWrite() logic

See {@link DataObject::onAfterWrite()} for context.

onBeforeDelete()

Extend the owner's onBeforeDelete() logic

See {@link DataObject::onBeforeDelete()} for context.

onAfterDelete()

Ensure that deletes records remove their underlying file assets, without affecting other staged records.

requireDefaultRecords()

Extend the owner's requireDefaultRecords() logic

See {@link DataObject::requireDefaultRecords()} for context.

populateDefaults()

Extend the owner's populateDefaults() logic

See {@link DataObject::populateDefaults()} for context.

onAfterBuild()

Extend the owner's onAfterBuild() logic

See {@link DataObject::onAfterBuild()} for context.

bool|null can(Member $member)

Influence the owner's can() permission check value to be disallowed (false), allowed (true) if no other processed results are to disallow, or open (null) to not affect the outcome.

See {@link DataObject::can()} and {@link DataObject::extendedCan()} for context.

Parameters

Member $member

Return Value

bool|null

bool|null canEdit(Member $member)

Influence the owner's canEdit() permission check value to be disallowed (false), allowed (true) if no other processed results are to disallow, or open (null) to not affect the outcome.

See {@link DataObject::canEdit()} and {@link DataObject::extendedCan()} for context.

Parameters

Member $member

Return Value

bool|null

bool|null canDelete(Member $member)

Influence the owner's canDelete() permission check value to be disallowed (false), allowed (true) if no other processed results are to disallow, or open (null) to not affect the outcome.

See {@link DataObject::canDelete()} and {@link DataObject::extendedCan()} for context.

Parameters

Member $member

Return Value

bool|null

bool|null canCreate(Member $member)

Influence the owner's canCreate() permission check value to be disallowed (false), allowed (true) if no other processed results are to disallow, or open (null) to not affect the outcome.

See {@link DataObject::canCreate()} and {@link DataObject::extendedCan()} for context.

Parameters

Member $member

Return Value

bool|null

array extraStatics(string $class = null, string $extension = null)

Define extra database fields

Return a map where the keys are db, has_one, etc, and the values are additional fields/relations to be defined.

Parameters

string $class

since this method might be called on the class directly

string $extension

since this can help to extract parameters to help set indexes

Return Value

array

Returns a map where the keys are db, has_one, etc, and the values are additional fields/relations to be defined.

updateCMSFields(FieldList $fields)

This function is used to provide modifications to the form in the CMS by the extension. By default, no changes are made. {@link DataObject->getCMSFields()}.

Please consider using {@link updateFormFields()} to globally add formfields to the record. The method {@link updateCMSFields()} should just be used to add or modify tabs, or fields which are specific to the CMS-context.

Caution: Use {@link FieldList->addFieldToTab()} to add fields.

Parameters

FieldList $fields

FieldList with a contained TabSet

void updateCMSCompositeValidator(CompositeValidator $compositeValidator)

This function is used to provide modifications to the Validators used on a DataObject.

Caution: Use {@link CompositeValidator->addValidator()} to add Validators.

Parameters

CompositeValidator $compositeValidator

Return Value

void

updateFrontEndFields(FieldList $fields)

This function is used to provide modifications to the form used for front end forms. {@link DataObject->getFrontEndFields()}

Caution: Use {@link FieldList->push()} to add fields.

Parameters

FieldList $fields

FieldList without TabSet nesting

updateCMSActions(FieldList $actions)

This is used to provide modifications to the form actions used in the CMS. {@link DataObject->getCMSActions()}.

Parameters

FieldList $actions

FieldList

updateSummaryFields(array $fields)

this function is used to provide modifications to the summary fields in CMS by the extension By default, the summaryField() of its owner will merge more fields defined in the extension's $extra_fields['summary_fields']

Parameters

array $fields

Array of field names

updateFieldLabels(array $labels)

this function is used to provide modifications to the fields labels in CMS by the extension By default, the fieldLabels() of its owner will merge more fields defined in the extension's $extra_fields['field_labels']

Parameters

array $labels

Array of field labels