silverstripe-framework/src/ORM/DataExtension.php

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<?php
namespace SilverStripe\ORM;
use SilverStripe\Core\Config\Config;
use SilverStripe\Core\Extension;
use SilverStripe\Forms\FieldList;
use SilverStripe\ORM\Queries\SQLSelect;
use Exception;
/**
* An extension that adds additional functionality to a {@link DataObject}.
*
* @property DataObject $owner
*/
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abstract class DataExtension extends Extension
{
public static function unload_extra_statics($class, $extension)
{
throw new Exception('unload_extra_statics gone');
}
/**
* Hook for extension-specific validation.
*
* @param ValidationResult $validationResult Local validation result
* @throws ValidationException
*/
public function validate(ValidationResult $validationResult)
{
}
/**
* Edit the given query object to support queries for this extension
*
* @param SQLSelect $query Query to augment.
* @param DataQuery $dataQuery Container DataQuery for this SQLSelect
*/
public function augmentSQL(SQLSelect $query, DataQuery $dataQuery = null)
{
}
/**
* 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.
*/
public function augmentDatabase()
{
}
/**
* Augment a write-record request.
*
* @param array $manipulation Array of operations to augment.
*/
public function augmentWrite(&$manipulation)
{
}
public function onBeforeWrite()
{
}
public function onAfterWrite()
{
}
public function onBeforeDelete()
{
}
public function onAfterDelete()
{
}
public function requireDefaultRecords()
{
}
public function populateDefaults()
{
}
public function can($member)
{
}
public function canEdit($member)
{
}
public function canDelete($member)
{
}
public function canCreate($member)
{
}
/**
* 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.
*
* @param string $class since this method might be called on the class directly
* @param string $extension since this can help to extract parameters to help set indexes
* @return array Returns a map where the keys are db, has_one, etc, and
* the values are additional fields/relations to be defined.
*/
public function extraStatics($class = null, $extension = null)
{
return array();
}
/**
* 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.
*
* @param FieldList $fields FieldList with a contained TabSet
*/
public function updateCMSFields(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.
*
* @param FieldList $fields FieldList without TabSet nesting
*/
public function updateFrontEndFields(FieldList $fields)
{
}
/**
* This is used to provide modifications to the form actions
* used in the CMS. {@link DataObject->getCMSActions()}.
*
* @param FieldList $actions FieldList
*/
public function updateCMSActions(FieldList $actions)
{
}
/**
* 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']
*
* @param array $fields Array of field names
*/
public function updateSummaryFields(&$fields)
{
$summary_fields = Config::inst()->get(static::class, 'summary_fields');
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if ($summary_fields) {
// if summary_fields were passed in numeric array,
// convert to an associative array
if ($summary_fields && array_key_exists(0, $summary_fields)) {
$summary_fields = array_combine(array_values($summary_fields), array_values($summary_fields));
}
if ($summary_fields) {
$fields = array_merge($fields, $summary_fields);
}
}
}
/**
* 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']
*
* @param array $labels Array of field labels
*/
public function updateFieldLabels(&$labels)
{
$field_labels = Config::inst()->get(static::class, 'field_labels');
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if ($field_labels) {
$labels = array_merge($labels, $field_labels);
}
}
}