/**
* Puts the views data for a single field onto the views data.
*
* @param string $table
* The table of the field to handle.
* @param string $field_name
* The name of the field to handle.
* @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
* The field definition defined in Entity::baseFieldDefinitions()
* @param \Drupal\Core\Entity\Sql\TableMappingInterface $table_mapping
* The table mapping information
* @param array $table_data
* A reference to a specific entity table (for example data_table) inside
* the views data.
*/
protected function mapFieldDefinition($table, $field_name, FieldDefinitionInterface $field_definition, TableMappingInterface $table_mapping, &$table_data)
{
// Create a dummy instance to retrieve property definitions.
$field_column_mapping = $table_mapping->getColumnNames($field_name);
$field_schema = $this->getFieldStorageDefinitions()[$field_name]->getSchema();
$field_definition_type = $field_definition->getType();
// Add all properties to views table data. We need an entry for each
// column of each field, with the first one given special treatment.
// @todo Introduce concept of the "main" column for a field, rather than
// assuming the first one is the main column. See also what the
// mapSingleFieldViewsData() method does with $first.
$multiple = count($field_column_mapping) > 1;
$first = TRUE;
foreach ($field_column_mapping as $field_column_name => $schema_field_name) {
$views_field_name = $multiple ? $field_name . '__' . $field_column_name : $field_name;
$table_data[$views_field_name] = $this->mapSingleFieldViewsData($table, $field_name, $field_definition_type, $field_column_name, $field_schema['columns'][$field_column_name]['type'], $first, $field_definition);
$table_data[$views_field_name]['entity field'] = $field_name;
$first = FALSE;
}
}
