/// <summary>
/// Clears any existing relations when deleting a node with a MultiPickerRelations datatype
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="umbraco.cms.businesslogic.DeleteEventArgs"/> instance containing the event data.</param>
private void BeforeDelete(Content sender, DeleteEventArgs e)
{
var multiPickerRelationsId = new Guid(DataTypeConstants.MultiPickerRelationsId);
// Clean up any relations
// For each MultiPickerRelations datatype
foreach (var multiPickerRelationsProperty in from property in sender.GenericProperties
where property.PropertyType.DataTypeDefinition.DataType.Id == multiPickerRelationsId
select property)
{
// used to identify this datatype instance - relations created are marked with this in the comment field
string instanceIdentifier = "[\"PropertyTypeId\":" + multiPickerRelationsProperty.PropertyType.Id.ToString() + "]";
// get configuration options for datatype
MultiPickerRelationsOptions options = ((MultiPickerRelationsPreValueEditor)multiPickerRelationsProperty.PropertyType.DataTypeDefinition.DataType.PrevalueEditor).Options;
// get relationType from options
RelationType relationType = RelationType.GetById(options.RelationTypeId);
if (relationType != null)
{
// clear all exisitng relations
DeleteRelations(relationType, sender.Id, options.ReverseIndexing, instanceIdentifier);
}
}
}
/////// NOT CURRENTLY USED, BUT MIGHT BE USEFUL TO MARK BIDIRECTIONAL RELATIONS
/////// <summary>
/////// string to identify a particular instance of this datatype
/////// </summary>
////private string InstanceIdentifier
////{
//// get
//// {
//// Property multiPickerRelationsProperty = new Property(((DefaultData)this.data).PropertyId);
//// return "[" + multiPickerRelationsProperty.PropertyType.Id.ToString() + "]";
//// }
////}
/// <summary>
/// Initializes a new instance of MultiPickerRelationsDataEditor
/// </summary>
/// <param name="data">data stored by this instance of this datatype (not currently used)</param>
/// <param name="options">configuration options for this datatype as set by the PreValueEditor</param>
internal MultiPickerRelationsDataEditor(IData data, MultiPickerRelationsOptions options)
{
this.data = data;
this.options = options;
}
/////// NOT CURRENTLY USED, BUT MIGHT BE USEFUL TO MARK BIDIRECTIONAL RELATIONS
/////// <summary>
/////// string to identify a particular instance of this datatype
/////// </summary>
////private string InstanceIdentifier
////{
//// get
//// {
//// Property multiPickerRelationsProperty = new Property(((DefaultData)this.data).PropertyId);
//// return "[" + multiPickerRelationsProperty.PropertyType.Id.ToString() + "]";
//// }
////}
/// <summary>
/// Initializes a new instance of MultiPickerRelationsDataEditor
/// </summary>
/// <param name="data">data stored by this instance of this datatype (not currently used)</param>
/// <param name="options">configuration options for this datatype as set by the PreValueEditor</param>
internal MultiPickerRelationsDataEditor(IData data, MultiPickerRelationsOptions options)
{
this.data = data;
this.options = options;
}