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xbasic on web app

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  • xbasic on web app

    in a desktop app i use the following code on a form button..users enter child records into walktoclass..the current table is just an order id and date. bookss09 contains author,title etc that correspond to a Crn in the walktoclass. bs9a contains corresponding data for all Crn's for the current parent and child written on push. What I am trying to accomplish on my web app is for users to enter multiple crn's in a grid that and then on submit the resulting page (grid linker) would have the current table as the parent and bs9a as child. When I attached this code to the afterUpdaterecords event it worked but did not filter for the current record but added all of the records in books09 to bs9a..I guess i am not sure how to get the script to filter for the current record (based on t.preid). I hope my description is clear..i trimmed the code down a bit as well


    Code:
    t=table.current()
    wt=table.get("bs9a")
    st= table.get("walktoclass")
    rt=table.get("bookss09")
     st.fetch_first()
     WHILE .NOT. st.fetch_EOF()
     rt.fetch_first()
     WHILE .NOT. rt.fetch_EOF()
    	wt.enter_begin()
    	wt.id=t.preid
    	wt.isbn=rt.isbn
    	wt.author=rt.author
    	wt.title=rt.title
    	wt.Course_Id=rt.Course_Id
    	
    	wt.price_N=rt.price_N
    	wt.price_U=rt.price_U
    	
    	wt.price=rt.price
    	wt.Required=rt.Required
    	wt.Instructor_Name=rt.Instructor
    	wt.Edition=rt.Edition
    	wt.Publisher=rt.Publisher
       wt.Crn=rt.Crn
       wt.enter_end(.T.)	
    	rt.fetch_next()
    	END WHILE
    	 st.fetch_next()
    
    	END WHILE

  • #2
    Re: xbasic on web app

    To Filter on t.preid I guess you must have a corresponding value in the
    "bookss09",
    Can I ask what it is, and what types they are ? both preid and the other value. (That way its easier to show you a dummy filter expression)
    -
    Yes in desktop Apps this is a lot easier due to a form for example having a current filter based on the current record etc.
    Last edited by ColinJD; 04-12-2009, 05:59 AM. Reason: Made a typo

    Comment


    • #3
      Re: xbasic on web app

      colin,
      thank you for responding,
      Preid and id are 5 digit numerics..

      its is CRN(course registration number that is common in walktoclass and books09.
      What i am trying to accomplish is populate bs9a by fetching through the set with a corresponding list of books for each class entered in walktoclass table so after the user enters his list of classes in the walktoclass grid and presses submit he would be given a list of all books that he would need for all classes. Kind of like filling a cart with all possible books and then would allow user to choose used or new etc with check boxes...again I know my explanation is a little rough so if further explanation is needed let me know...thanks to all

      Comment


      • #4
        Re: xbasic on web app

        i guess what i need is a way to build a query or filter based on the child records entered for a single parent..user would enter generally between 3 and 8 childs(classes) , i want to use those CRN's to filter the books09 table and then write the filtered results to bs9a table using an id from the parent to connect the relationship ...again struggling with the explanation a little...

        thanks

        Comment


        • #5
          Re: xbasic on web app

          Ok what I often do is, make a dummy Form from a dummy field,
          Then use the Genies etc to make the code for me then copy it across
          I'll alter your code with pseudo||proto code so expect syntax errors galore.


          Code:
          t=table.current()
          wt=table.get("bs9a")
          st= table.get("walktoclass")
          rt=table.get("bookss09")
           st.fetch_first()
           WHILE .NOT. st.fetch_EOF()
          
          Dim QryID as P 
          QryID = rt.query_create("N","id = "+Ltrim(Str(t.preid)) )   ''' This filter 'expression can get tricky, so if you need to expand it, look at the query.filter  type expression
          
          rt.fetch_first()
          
           WHILE .NOT. rt.fetch_EOF()
          	wt.enter_begin()
          	wt.id=t.preid
          	wt.isbn=rt.isbn
          	wt.author=rt.author
          	wt.title=rt.title
          	wt.Course_Id=rt.Course_Id
          	
          	wt.price_N=rt.price_N
          	wt.price_U=rt.price_U
          	
          	wt.price=rt.price
          	wt.Required=rt.Required
          	wt.Instructor_Name=rt.Instructor
          	wt.Edition=rt.Edition
          	wt.Publisher=rt.Publisher
             wt.Crn=rt.Crn
             wt.enter_end(.T.)	
          	rt.fetch_next()
          	END WHILE
          
                       QryId.drop()  '''Dump the query
          	 st.fetch_next()
          
          	END WHILE

          What I am suggesting here is to filter the bookss09 before iterating through it

          Comment


          • #6
            Re: xbasic on web app

            Colin ,

            again thanks, still not filtering ...but i will keep working.. there were no syntax errors but the records written to bs9a were not filtered..

            Comment

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