public override void WriteTo(TextWriter writer, TextEncoder encoder, CultureInfo cultureInfo)
{
AssertWriteToParameters(writer, encoder, cultureInfo);
// Output the value in the General Short Date/Long Time format.
var outputDate = LavaDateTime.ToString(_value, "G", cultureInfo);
writer.Write(outputDate);
}
/* [2021-07-31] DL
*
* Lava Date filters may return DateTime, DateTimeOffset, or string values according to their purpose.
* Where possible, a filter should return a DateTime value specified in UTC, or a DateTimeOffset.
* Local DateTime values may give unexpected results if the Rock timezone setting is different from the server timezone.
* Where a date string is accepted as an input parameter, the Rock timezone is implied unless a timezone is specified.
*/
/// <summary>
/// Formats a date using a .NET date format string
/// </summary>
/// <param name="input"></param>
/// <param name="format"></param>
/// <returns></returns>
public static string Date(object input, string format = null)
{
if (input == null)
{
return(null);
}
string output;
// If input is "now", use the current Rock date/time as the input value.
if (input.ToString().ToLower() == "now")
{
// To correctly include the Rock configured timezone, we need to use a DateTimeOffset.
// The DateTime object can only represent local server time or UTC time.
input = LavaDateTime.NowOffset;
}
// Use the General Short Date/Long Time format by default.
if (string.IsNullOrWhiteSpace(format))
{
format = "G";
}
// Consider special 'Standard Date' and 'Standard Time' formats.
else if (format == "sd")
{
format = "d";
}
else if (format == "st")
{
format = "t";
}
// If the format string is a single character, add a space to produce a valid custom format string.
// (refer http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx#UsingSingleSpecifiers)
else if (format.Length == 1)
{
format = " " + format;
}
if (input is DateTimeOffset inputDateTimeOffset)
{
// Preserve the value of the specified offset and return the formatted datetime value.
output = inputDateTimeOffset.ToString(format).Trim();
}
else
{
// Convert the input to a valid Rock DateTimeOffset if possible.
DateTimeOffset?inputDateTime;
if (input is DateTime dt)
{
inputDateTime = LavaDateTime.ConvertToRockOffset(dt);
}
else
{
inputDateTime = LavaDateTime.ParseToOffset(input.ToString(), null);
}
if (!inputDateTime.HasValue)
{
// Not a valid date, so return the input unformatted.
output = input.ToString().Trim();
}
else
{
output = LavaDateTime.ToString(inputDateTime.Value, format).Trim();
}
}
return(output);
}