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Xbasic validation - check subtables

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  • Xbasic validation - check subtables

    I am trying to get an xbasic validation to work but I am not certain what I am doing wrong. The concept is probably ok but the syntax is not, I have copied code from different places...

    Details:
    I have a "project" table with an "active" field.
    The "project" table has got a subtable, "project_items" with a "delivered" field
    When setting "Active = 0" in the parent table I want to check that there are no non delivered items in the subtable. If there are non delivered items I should not be able to set the project to inactive.

    Code:
    function validate_Active as p (e as p)
    	
    	if e.data.Active = .f. then
    		flag = cn.open("::Name::MYCONNECTION")
    		dim sqlCommand as c
    		sqlCommand = "SELECT  Count(*) FROM project_items WHERE Project_ID = :projectid  AND  Delivered = 0"
    		dim args as sql::arguments
    		args.add("projectid",e.data.idProjects)
    		flag = cn.execute(sqlCommand,args)
    		dim rs as sql::ResultSet
    		rs = cn.ResultSet
    		count = rs.data(1)
    
    		if count <> 0 then
    			validate_Active.hasError = .t.
    			validate_Active.errorText = "The project has non delivered items."
    		end if
    	
    	end if
    	
    end function
    Please don't laugh at my code... I have several places I would like to use this code (similar circumstances) so I need it badly...

  • #2
    Re: Xbasic validation - check subtables

    I'm short on time so can't study all your code, but at first glance I noticed that you did not declare the cn variable before trying to open your connection.

    dim cn as sql::connection
    Carol King
    Developer of Custom Homebuilders' Solutions (CHS)
    http://www.CHSBuilderSoftware.com

    Comment


    • #3
      Re: Xbasic validation - check subtables

      Make sure you let A5 create your function prototype before editing. Also a few tweaks:
      1) dim flag as L
      2) Initialise these at the beginning of the function:
      validate_Active.hasError = .f.
      validate_Active.errorText = ""
      Andy

      Comment


      • #4
        Re: Xbasic validation - check subtables

        Thanks for your help!!! A few tweaks and it works now. A few strange things on the way, my checkbox returns True if checked, but "" (nothing) if not checked...

        Anyway, here is the working code if anyone needs it

        function validate_Active as p (e as p)
        validate_Active.hasError = .f.
        validate_Active.errorText = ""

        if e.data.Active = "" then
        dim cn as sql::connection
        dim flag as L
        flag = cn.open("::Name::YOURCONNECTION")
        dim sqlCommand as c
        sqlCommand = "SELECT Count(*) FROM projects_items WHERE Project_ID = :projectid AND Delivered = 0"
        dim args as sql::arguments
        args.add("projectid",e.data.idProjects)
        flag = cn.execute(sqlCommand,args)
        dim rs as sql::ResultSet
        rs = cn.ResultSet
        count = rs.data(1)

        if count <> 0 then
        validate_Active.hasError = .t.
        validate_Active.errorText = "The project has non delivered items, can't set to inactive."
        end if

        end if

        end function

        Comment


        • #5
          Re: Xbasic validation - check subtables

          Well done.

          Comment

          Working...
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