|
|
|
|
_CompareDates
Compares two date times to determine whether the first date time is less than, equal to, or greater than the second date time.
Syntax
_CompareDates(date1,date2)
Parameters
Parameters for _CompareDates
Parameter |
Definition |
Data type |
date1 |
First date to use. |
PFDateTime |
date2 |
Second date to use. |
PFDateTime |
Returns
One of the following (Integer):
- -1—If date1 is less than date2.
- 0—If date1 equals date2.
- 1—If date1 is greater than date2.
Notes
Both dates are normalized before comparison. For more information, see About date time processing.
Example
This example of a constraint rule uses both the GetSiteTime and _CompareDates functions to check whether the date entered is in the future. It is attached at the item level to a DOV item.
evaluate on Form Submission
value = _CompareDates(this.Value, GetSiteTime())
when value == 1
issue query: Date cannot be in the future compared to System Date
You could also write the rule to evaluate to true or false instead of to a numeric value:
evaluate on Form Submission
value = _CompareDates(this.Value, GetSiteTime()) == 1
when value is true
issue query: Date cannot be in the future compared to System Date
