Sexy•12mo ago

Substring problem

I have a string representing a date and time formatted as '01/02/2024/14:00'. My current approach encounters an issue where only the numbers before the first '/' are considered when using .unique, leading to incomplete data extraction. I'm exploring alternatives, such as using substring, but I haven't found a solution yet. Ideally, incorporating this into a .filter option would be beneficial for my needs. How can I accurately split this string into its constituent parts, such as day, month, year, and time, to work with each segment individually?

2 Replies

lee•12mo ago

to do arbitrarily complex filters you can do the filter in javascript

// define a function dateLessThan that does all the string parsing you want.
// then in your query do this
for await (const reservation of ctx.db.query("messages")) {
  if (dateLessThan(reservation.arrivalDate, args.day) && dateLessThan(args.day, reservation.departureDate) && reservation.roomNumber === args.room) {
    return reservation;
  }
}
return null;

// define a function dateLessThan that does all the string parsing you want.
// then in your query do this
for await (const reservation of ctx.db.query("messages")) {
  if (dateLessThan(reservation.arrivalDate, args.day) && dateLessThan(args.day, reservation.departureDate) && reservation.roomNumber === args.room) {
    return reservation;
  }
}
return null;

SexyOP•12mo ago

thank you again, LEE 🍺

Substring problem

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