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Get User's Local Date/Time -- How do you handle that?

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  • Get User's Local Date/Time -- How do you handle that?

    Web App running 7086 and Microsoft's SQL Server.

    Using the GETDATE() function in SQL has always been my go to strategy when capturing the date/time of some event. Of course that means it's the server's time that get's inserted/updated.

    I'm working on a nation wide web app at the moment where I'm needing to get the local user's time. A little JavaScript and populating the current user time is easy enough. But in this app are numerous automated (SQL triggers) INSERTS and UPDATES where GETDATE() is being used. Again, this is only server time. So naturally I'll need to store the user's time zone offset in the DB somewhere and when displaying the time data I can adjust that time as needed. Then there is AZ and HI ...no time change.

    My question to you folks is how are you handling this? Is there a better way than what I just described?

    Mike Brown - Contact Me
    Programmatic Technologies, LLC
    Programmatic-Technologies.com
    Independent Developer & Consultant

  • #2
    I keep a table of users' timezone - it's part of their registration or profile, and it's actually for their Facility.

    Start with the timezones table:

    https://popsql.com/learn-sql/sql-ser...-in-sql-server

    Then I think you can follow this but I'll explain if you want:

    Code:
    args.set("Facility_ID", val(session.Facility_ID))
    sqlGet1 = <<%a%
    select T.sys_Time_Zone
    from Facility F
    left join TimeZones T on T.ID = F.Timezone_Adjustment_ID
    where Fac_ID = :Facility_ID
    %a%
    sqlGet2 = "SELECT [dbo].[LocalTime] (getdate(),'Eastern Standard Time',:Fac_Timezone) as newtime"
    
    cn.open("::name::oerca")
    cn.PortableSQLEnabled = .f.
    vFac_TimeZone = ""
    if cn.execute(sqlGet1, args)
    rs = cn.ResultSet
    if rs.nextRow()
    vFac_TimeZone = rs.data(1)
    end if
    end if
    cn.FreeResult()
    args.set("Fac_Timezone", vFac_TimeZone)
    cn.execute(sqlGet2, args)
    rs = cn.ResultSet
    Facility_LocalDT = rs.data(1)
    I used to try to handle things like daylight savings time with my own function - miserable to make work well. This does the job very nicely and worldwide.

    We discovered this approach originally from Dave Pinal but I can't find his article on the subject.






    -Steve
    sigpic

    Comment


    • #3
      Thanks Steve!
      Mike Brown - Contact Me
      Programmatic Technologies, LLC
      Programmatic-Technologies.com
      Independent Developer & Consultant

      Comment


      • #4
        Hi Mike,

        Just use javascript on the client device and GEO location data:
        https://blog.logrocket.com/detect-lo...-3d9523c011b9/

        There are many examples online and you don't need to do anything on the server or database.

        Comment


        • #5
          Sean -

          This may be old advice, but one of the reasons I didn't use client-side is that users don't always have their devices correct. An additional benefit of server-side functionality is that it can be used for automated procedures and other things that do not require a value from the client.
          -Steve
          sigpic

          Comment


          • #6
            Originally posted by WebDesignShop View Post
            Hi Mike,

            Just use javascript on the client device and GEO location data:
            https://blog.logrocket.com/detect-lo...-3d9523c011b9/

            There are many examples online and you don't need to do anything on the server or database.
            Hi,
            I don't know javascript that well, how would I use this in a xbasic routine to get the json data?

            Thanks,
            Mike

            Mike Reed
            Phoenix, AZ

            Comment


            • #7
              Hi Mike,

              You wouldn't use the method I suggested in xbasic, because xbasic is processsed on the server. My recommendation is to process on the client side without having to do anything with the server. Although you most likely want to save the results to a result set using a UX list or similar, which can be done using the built in Alpha Anywhere tools. Client side means on the actual users device, which means Javascript. The javascript would then interact with your user interface and then feed the information back to the server as it normally would (such as a UX List control update).

              Comment


              • #8
                Thanks for your help.

                Have a good one!
                Mike Reed
                Phoenix, AZ

                Comment


                • #9
                  Originally posted by Steve Workings View Post
                  Sean -

                  This may be old advice, but one of the reasons I didn't use client-side is that users don't always have their devices correct. An additional benefit of server-side functionality is that it can be used for automated procedures and other things that do not require a value from the client.
                  Hi Steve!

                  No doubt about what you are saying. There are definitely circumstances that would warrant a server side response. Since most of the work we do is based on mobile applications I tend to reply from that perspective, and it's very easy to do client side.

                  Comment

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