Calculation fields in Castor are often used to build advanced date validations. In Castor dates are stored as string (text) in the format 'DD-MM-YYYY'. It is generally necessary to indicate this in yo...
There are multiple options to calculate the difference between dates. 1. getDateDiff The easiest approach is to use getDateDiff. See this calculation: getDateDiff('{date2}','{date1}','y') In this calc...
Time difference between two time fields on the same day To calculate the difference between two time fields in hours, minutes, or seconds, use the following formula: getTimeDiff('{time_variable_2}', '...
Use this template to add a month to a date, e.g. if the next visit has to be within a month after the first visit. Replace {date} with your own variable name. var date = moment('{date}', 'DD-MM-YYYY')...
You can use Moment.js to compare two or three dates with each other. You can use this to build advanced dependencies or calculations. How to start More information about how to create a Moment.js obj...
There are multiple ways to calculate the age using dates. Here are some examples: Calculate current age (today's age) If you only have one date variable (date of birth), you can use the following form...
As a full birth date might be considered personally identifiable information, using only the birth year or year and month of birth is a good alternative. It is still possible to calculate the age from...
1. Create a calculation field after two date fields. You can choose the variable names yourself, but you will have to change them in the calculation template in step 2. 2. Use this formula for the cal...
If you want to give a message when the date is more than X days before today, or in the future, you can use this formula. In this example 10 days or more are used as the limit. You can enter your var...
This template checks if after the patient signed informed consent (date1) a visit has taken place (date2) between a day range. In this template: date1 and date2 are two date fields in your form. Repl...