core-bundle/src/Resources/contao/drivers/DC_Table.php
protected function formatCurrentValue($field, $value, $mode)
	{
		$remoteNew = $value; // see #3861

		if ($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['eval']['isBoolean'] || ($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['inputType'] == 'checkbox' && !$GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['eval']['multiple']))
		{
			$remoteNew = $value ? ucfirst($GLOBALS['TL_LANG']['MSC']['yes']) : ucfirst($GLOBALS['TL_LANG']['MSC']['no']);
		}
		elseif (isset($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['foreignKey']))
		{
			$key = explode('.', $GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['foreignKey'], 2);

			$objParent = $this->Database->prepare("SELECT " . Database::quoteIdentifier($key[1]) . " AS value FROM " . $key[0] . " WHERE id=?")
										->limit(1)
										->execute($value);

			if ($objParent->numRows)
			{
				$remoteNew = $objParent->value;
			}
		}
		elseif (\in_array($mode, array(1, 2)))
		{
			$remoteNew = ($value != '') ? ucfirst(Utf8::substr($value, 0, 1)) : '-';
		}
		elseif (\in_array($mode, array(3, 4)))
		{
			if (!isset($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['length']))
			{
				$GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['length'] = 2;
			}

			$remoteNew = ($value != '') ? ucfirst(Utf8::substr($value, 0, $GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['length'])) : '-';
		}
		elseif (\in_array($mode, array(5, 6)))
		{
			$remoteNew = ($value != '') ? Date::parse(Config::get('dateFormat'), $value) : '-';
		}
		elseif (\in_array($mode, array(7, 8)))
		{
			$remoteNew = ($value != '') ? date('Y-m', $value) : '-';
			$intMonth = ($value != '') ? (date('m', $value) - 1) : '-';

			if (isset($GLOBALS['TL_LANG']['MONTHS'][$intMonth]))
			{
				$remoteNew = ($value != '') ? $GLOBALS['TL_LANG']['MONTHS'][$intMonth] . ' ' . date('Y', $value) : '-';
			}
		}
		elseif (\in_array($mode, array(9, 10)))
		{
			$remoteNew = ($value != '') ? date('Y', $value) : '-';
		}
		else
		{
			if ($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['inputType'] == 'checkbox' && !$GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['eval']['multiple'])
			{
				$remoteNew = ($value != '') ? $field : '';
			}
			elseif (\is_array($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['reference']))
			{
				$remoteNew = $GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['reference'][$value];
			}
			elseif ($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['eval']['isAssociative'] || array_is_assoc($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['options']))
			{
				$remoteNew = $GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['options'][$value];
			}
			else
			{
				$remoteNew = $value;
			}

			if (\is_array($remoteNew))
			{
				$remoteNew = $remoteNew[0];
			}

			if (empty($remoteNew))
			{
				$remoteNew = '-';
			}
		}

		return $remoteNew;
	}
protected function formatCurrentValue($field, $value, $mode)
	{
		$remoteNew = $value; // see #3861

		if ($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['eval']['isBoolean'] || ($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['inputType'] == 'checkbox' && !$GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['eval']['multiple']))
		{
			$remoteNew = $value ? ucfirst($GLOBALS['TL_LANG']['MSC']['yes']) : ucfirst($GLOBALS['TL_LANG']['MSC']['no']);
		}
		elseif (isset($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['foreignKey']))
		{
			$key = explode('.', $GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['foreignKey'], 2);

			$objParent = $this->Database->prepare("SELECT " . Database::quoteIdentifier($key[1]) . " AS value FROM " . $key[0] . " WHERE id=?")
										->limit(1)
										->execute($value);

			if ($objParent->numRows)
			{
				$remoteNew = $objParent->value;
			}
		}
		elseif (\in_array($mode, array(1, 2)))
		{
			$remoteNew = ($value != '') ? ucfirst(Utf8::substr($value, 0, 1)) : '-';
		}
		elseif (\in_array($mode, array(3, 4)))
		{
			if (!isset($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['length']))
			{
				$GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['length'] = 2;
			}

			$remoteNew = ($value != '') ? ucfirst(Utf8::substr($value, 0, $GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['length'])) : '-';
		}
		elseif (\in_array($mode, array(5, 6)))
		{
			$remoteNew = ($value != '') ? Date::parse(Config::get('dateFormat'), $value) : '-';
		}
		elseif (\in_array($mode, array(7, 8)))
		{
			$remoteNew = ($value != '') ? date('Y-m', $value) : '-';
			$intMonth = ($value != '') ? (date('m', $value) - 1) : '-';

			if (isset($GLOBALS['TL_LANG']['MONTHS'][$intMonth]))
			{
				$remoteNew = ($value != '') ? $GLOBALS['TL_LANG']['MONTHS'][$intMonth] . ' ' . date('Y', $value) : '-';
			}
		}
		elseif (\in_array($mode, array(9, 10)))
		{
			$remoteNew = ($value != '') ? date('Y', $value) : '-';
		}
		else
		{
			if ($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['inputType'] == 'checkbox' && !$GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['eval']['multiple'])
			{
				$remoteNew = ($value != '') ? $field : '';
			}
			elseif (\is_array($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['reference']))
			{
				$remoteNew = $GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['reference'][$value];
			}
			elseif ($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['eval']['isAssociative'] || array_is_assoc($GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['options']))
			{
				$remoteNew = $GLOBALS['TL_DCA'][$this->strTable]['fields'][$field]['options'][$value];
			}
			else
			{
				$remoteNew = $value;
			}

			if (\is_array($remoteNew))
			{
				$remoteNew = $remoteNew[0];
			}

			if (empty($remoteNew))
			{
				$remoteNew = '-';
			}
		}

		return $remoteNew;
	}
Return the formatted group header as string

@param string  $field
@param mixed   $value
@param integer $mode

@return string