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Deleting File from Image File Reference Field value

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    Deleting File from Image File Reference Field value

    Hello,

    I'm a little stuck and could use a push.

    I would like the ability to delete a file that is stored in a folder and referenced from an Image File Reference Field in a grid called Images. I have Allow Delete enable in the Update Settings: Permissions portion of the Grid. This only allows deleting the reference in the grid. I�d like to get to the file. The client folder for uploading images is created when creating a new client account. I have a form event on the Images.a5w page to allow the uploading of the files. The filename is stored in the Name Field of the grid.

    I assume I need a script in the Event: CanDeleteRecord before the end with. How can I get the filename from the field Name of the grid based on the user selecting the delete checkbox? I�ve looked at the Xbasic for the grid and don�t know how to tie the two together. Any help would be appreciated.

    filename = ????
    if (filename = "") then
    end
    end if
    If file.exists("[PathAlias.ADB_Path]\client\\" + session.vFldr + "\\" + filename)
    a5_file_remove("[PathAlias.ADB_Path]\client\\" + session.vFldr + "\\" + filename)
    end if

    From the grid
    with tmpl.field_info[3]
    .Fieldname = "Name"
    .Scope = "Local"
    .DisplayFormat = ""
    .DisplayUnFormat = ""
    .Type = "C"
    .Updateable = .f.
    .Varname = "NAME"
    .Column.LabelPosition = "Left"
    .Controltype = "Label"
    .Label.InLineStyle = ""
    .BreakType = "None"
    .nCols = 1
    .Column.Hide = .f.
    .Column.Heading = "Name"
    .Column.Sort = "Name"
    .Column.Type = "Freeform"

    Thanks for any help,

    Bob

    #2
    Re: Deleting File from Image File Reference Field value

    Here is an example of additional processing based on that Delete box being checked. It builds a crlf delimited list of which records are checked for delete. Then you can process for each of those records in the last three statements.

    ---

    dim chkrows as n

    with tmpl_userlist
    componentName = "mycomponent"
    chkrows = rows
    end with

    '' DELETE CODE
    dim deletelist as c
    for i = 1 to chkrows
    if eval_valid("V.R"+alltrim(str(i))+".CheckBox_Delete") = .T. 'delete checked
    deletelist = deletelist + eval("V.R"+alltrim(str(i))+".userid") + crlf() ' assuming the field was named 'userid'
    end if
    next

    for each foo in deletelist
    ...put your code here to delete the file
    next
    Steve Wood
    See my profile on IADN

    Comment


      #3
      Re: Deleting File from Image File Reference Field value

      I eventually got around to attempting this and I am having problems with my delete code. The path is good. I tested it wth an actual file name in the client folder. What I can figure is how to get the Name (a character field in the grd_image table which has the name of the file) from the grid for the selected to delete record.

      ---

      dim chkrows as n
      with tmpl_grd_image
      componentName = "grd_image"
      chkrows = rows
      end with

      ' DELETE CODE
      dim deletelist as c
      for i = 1 to chkrows
      if eval_valid("V.R"+alltrim(str(i))+".CheckBox_Delete") = .T. 'delete checked
      deletelist = deletelist + eval("V.R"+alltrim(str(i))+".CheckBox_Delete") + crlf()
      end if
      next

      for each foo in deletelist
      If file.exists("[PathAlias.ADB_Path]\client\\" + session.vFldr + "\\" + name)
      a5_file_remove("[PathAlias.ADB_Path]\client\\" + session.vFldr + "\\" + name)
      end if
      next

      ---

      I tried the following for the end of the If file.exists(.... \\ ??? ) and a5_file remove( \\ ???)

      alltrim(tmpl.field_info[3])
      tmpl not found.

      alltrim(datasubmitted.name)
      datasubmitted.name subelement not found

      alltrim(tmpl_name)
      Variable "tmpl_name" not found

      alltrim(.name)
      Argument is incorrect data type

      alltrim(name)
      Variable "name" not found

      ".name"
      no error, just does not delete the file

      name
      Variable "name" not found

      I'm just guessing at this point. Any suggestion on how to get the filename from the grid field?

      Thanks,

      Bob

      Comment


        #4
        Re: Deleting File from Image File Reference Field value

        Just like the checkbox is named V.Rx.CheckBox_Delete (where X is the row), your other field names have a similar structure. V.R1.Filename, V.R2.Filename, etc. You have to use the same logic as deployed for knowing the delete button, that is you, you need to cycle through each row and process, or not process, each row based on your criteria. Meaning, you cannot determine in advance if your desired record is R1, R2 or Rn.
        Steve Wood
        See my profile on IADN

        Comment


          #5
          Re: Deleting File from Image File Reference Field value

          Hi,

          I need to delete a file from a folder in an application i wrote a few years ago. Can anyone help with the code where the file is deleted from a directory?

          dim chkrows as n
          with tmpl_grd_image
          componentName = "grd_image"
          chkrows = rows
          end with

          ' DELETE CODE
          dim deletelist as c
          for i = 1 to chkrows
          if eval_valid("V.R"+alltrim(str(i))+".CheckBox_Delete") = .T. 'delete checked
          deletelist = deletelist + eval("V.R"+alltrim(str(i))+".CheckBox_Delete") + crlf()
          end if
          next

          for each foo in deletelist
          If file.exists("[PathAlias.ADB_Path]\client\" + session.vFldr + "\" + name)
          a5_file_remove("[PathAlias.ADB_Path]\client\" + session.vFldr + "\" + name)
          end if
          next
          Thanks,

          Denis

          Comment

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