DataExtension
abstract class DataExtension extends Extension (View source)
An extension that adds additional functionality to a DataObject.
Properties
| protected | SS_Object | $owner | The object this extension is applied to.  | 
                from Extension | 
| protected | DataObject | $ownerBaseClass | The base class that this extension was applied to; $this->owner must be one of these  | 
                from Extension | 
| public | $class | from Extension | 
Methods
Called when this extension is added to a particular class
Helper method to strip eval'ed arguments from a string thats passed to DataObject::$extensions or Object::add_extension().
This function is used to provide modifications to the form in the CMS by the extension. By default, no changes are made. DataObject->getCMSFields().
This function is used to provide modifications to the form used for front end forms. DataObject->getFrontEndFields()
This is used to provide modifications to the form actions used in the CMS. DataObject->getCMSActions().
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']
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()
        
    
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                static            
    add_to_class(string $class, string $extensionClass, mixed $args = null)
        
    
    Called when this extension is added to a particular class
        
                            
    setOwner(SS_Object $owner, string $ownerBaseClass = null)
        
    
    Set the owner of this extension.
        
                            
    clearOwner()
        
    
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                            SS_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 thats passed to DataObject::$extensions or Object::add_extension().
        
                static            
    get_extra_config($class, $extension, $args)
        
    
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                static            
    unload_extra_statics($class, $extension)
        
    
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    validate(ValidationResult $validationResult)
        
    
    Hook for extension-specific validation.
        
                            
    augmentSQL(SQLQuery $query)
        
    
    Edit the given query object to support queries for this extension
        
                            
    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 Versioned->augmentDatabase for an example.
        
                            
    augmentWrite(array $manipulation)
        
    
    Augment a write-record request.
        
                            
    onBeforeWrite()
        
    
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    onAfterWrite()
        
    
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    onBeforeDelete()
        
    
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    onAfterDelete()
        
    
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    requireDefaultRecords()
        
    
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    populateDefaults()
        
    
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    can($member)
        
    
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    canEdit($member)
        
    
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    canDelete($member)
        
    
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    canCreate($member)
        
    
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                            array
    extraStatics($class = null, $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.
        
                            
    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. DataObject->getCMSFields().
Please consider using updateFormFields() to globally add formfields to the record. The method updateCMSFields() should just be used to add or modify tabs, or fields which are specific to the CMS-context.
Caution: Use FieldList->addFieldToTab() to add fields.
        
                            
    updateFrontEndFields(FieldList $fields)
        
    
    This function is used to provide modifications to the form used for front end forms. DataObject->getFrontEndFields()
Caution: Use FieldList->push() to add fields.
        
                            
    updateCMSActions(FieldList $actions)
        
    
    This is used to provide modifications to the form actions used in the CMS. 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']