Date min/en: Difference between revisions
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===Minimum date (date_min) | ===Minimum date (date_min)=== | ||
'''Description''' | '''Description''' | ||
This question attribute can be used to set the minimum value for | This question attribute can be used to set the minimum value for a date question (in y-m-d format or any English valid string - see below for more details). It can be used for both popup and dropdown display options. | ||
If a minimum date is not set, then 1.1.1900 is used as default. | |||
{{Alert|title=Attention|text=The Expression Manager validation option can also be used for setting up a "minimum date". However, if you you use the popup calendar and the expression relies on a previous question located on the same page, the year will not be displayed correctly in the popup calendar.}} | |||
'''Valid values''' | |||
* Any date value in format YYYY-MM-DD (eg., 2017-08-24); | |||
* Any year value; | |||
* Any [http://php.net/strtotime English string] : "now", "-10 years", "tomorrow"; | |||
* Reference to another date/time question : AnotherDateQuestion (using the question code); | |||
* Expressions : With expressions, a minimum date can be dynamically calculated. For example, you can use a date from a previous answer + 3 days as a minimum for the present question by entering: ''date("Y-m-d",strtotime(departuredate)+3*60*60*24)''. | |||
</onlyinclude> | </onlyinclude> | ||
[[Category:Question Settings]][[Category: | [[Category:Question Settings]][[Category:Question Display Options]] | ||
Latest revision as of 15:08, 18 February 2021
Minimum date (date_min)
Description
This question attribute can be used to set the minimum value for a date question (in y-m-d format or any English valid string - see below for more details). It can be used for both popup and dropdown display options. If a minimum date is not set, then 1.1.1900 is used as default.
Attention : The Expression Manager validation option can also be used for setting up a "minimum date". However, if you you use the popup calendar and the expression relies on a previous question located on the same page, the year will not be displayed correctly in the popup calendar.
Valid values
- Any date value in format YYYY-MM-DD (eg., 2017-08-24);
- Any year value;
- Any English string : "now", "-10 years", "tomorrow";
- Reference to another date/time question : AnotherDateQuestion (using the question code);
- Expressions : With expressions, a minimum date can be dynamically calculated. For example, you can use a date from a previous answer + 3 days as a minimum for the present question by entering: date("Y-m-d",strtotime(departuredate)+3*60*60*24).