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Override Dynamic Connection String in DropDown

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  • Override Dynamic Connection String in DropDown

    I have a dynamic connection string ::name::DynamicConnection_myconn.

    This dynamic connection string is stored ENCRYPTED in session as:

    Now, I have a dropdown box whose connection is:

    I need a way to 'catch' the dropdown before it tries to resolve the connection string so that I can run my decryption.

    I have been able to do this in a grid:

    e.tmpl.cs.ConnectionString=a5_decrypt_string(session.__protected__tenant_db, 'mykey')

    However, this above line does not change the value of ::name::DynamicConnection_myconn (obviously).

    Is there a way I can override the resolve function? I found this, but it does not even work on a test.a5w page (if i pass it ::name::DynamicConnection_myconn, it returns ::name::DynamicConnection_myconn, not the expected session.__protected__myconn variable).

    If in the grid I could do something like:
    A5_SetConnectionString("::name::DynamicConnection_myconn",a5_decrypt_string(session.__protected__tenant_db,'mykey')) then I would be fine.

    WIth the lack of documentation, I am having a hard time finding a function like this
    Scott Moniz - Computer Programmer/Analyst
    REA Inc.
    [email protected]

    REA INC offers consulting services, programming services, systems design, database design, third party payment gateway integration (CHASE, PAYPAL, AUTHORIZE.NET) and developer support.
    If you need custom code, or 1-to-1 mentoring in any facet of your database/web application design,
    contact us to discuss options.

  • #2
    Re: Override Dynamic Connection String in DropDown

    I'm a bit thick when it comes to understanding what's what, in these cases. I get what you're trying to do... can you give an example of how the connection string changes? Is it the Named Connection that changes (probably not) or the resolved connection string (probably). So you start with a named connection (that would resolve into one string), but then you change what goes into that named connection, assign it to a session var, then use that.


    • #3
      Re: Override Dynamic Connection String in DropDown

      Hi David, sure.

      We have an application - this application has its own database. ::name::conn
      This application stores ' Products ' to manage.

      Each Product has its own database.

      All products have identical db structure. (Table A, Table B, Table C) yada yada.

      When you log in to the system, you can add a product and its connection string.
      You select a product and it's connection string is put into session as session.__protected__myconn

      I have a connection named DynamicConnection_myconn.
      The grids for managing Table A, B and C all use the DynamicConnection_myconn connection.

      This way the grid for table A is able to manage Table A in any product database (based on the current selected product in session).

      Now, This all works fine.
      However, when I encrypt the session.__protected__myconn variable, obviously the alpha grids / dropdowns have no clue how to properly decrypt it.

      I was able to remedy this in the grid on the OnGridExecute event:

      However, since dropdown objects have their own connection string i was unsure of where to put the code.

      I have found a solution:
      for i=1 to e.tmpl.detailfield_info.size()
      if e.tmpl.detailfield_info[i].ControlType=="DropDownBox" then
      IF e.tmpl.detailfield_info[i].DropDownBox.CS.ConnectionString=="::name::DynamicConnection_tenant_db" then
      end if

      end if

      However, I am not satisfied with it.
      It would be so much easier to call something like:
      A5_SetConnectionString("::name::DynamicConnection_tenant_db",decryptmyconnection(session.__protected__tenant_db,"myencryptionkey")) in the OnGridExecute and then this should work for all Lookups, Dropdowns, etc that use the DynamicConnection_tenant_db

      For now, my hackish method will work, but it is not the best solution at all.

      I am lookin for a more efficient way to do this.
      Scott Moniz - Computer Programmer/Analyst
      REA Inc.
      [email protected]

      REA INC offers consulting services, programming services, systems design, database design, third party payment gateway integration (CHASE, PAYPAL, AUTHORIZE.NET) and developer support.
      If you need custom code, or 1-to-1 mentoring in any facet of your database/web application design,
      contact us to discuss options.


      • #4
        Re: Override Dynamic Connection String in DropDown

        Yeah... makes sense... that would be a useful new function.