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variables in the POST method

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    #1

    variables in the POST method

    In the code below, can someone tell me where the following come from:

    FileToUpload.filename
    ServerSetting.Document_Root
    FileToUpload.data

    Are these dot variables available because of the POST method? If so, I can't find any reference material. Where is it defined that .data refers to the data portion of the blob and .filename refers to the text filename?

    Code:
     
<html>
<%a5
dim msg as c = ""
if eval_valid("cmd")
    file.from_blob(ServerSetting.Document_Root + "\\" + FileToUpload.filename, FileToUpload.data)
    msg = "<a href=\"/" + FileToUpload.filename + "\" target=\"_blank\">" + FileToUpload.filename + "</a> was uploaded<br /><br />"
end if
%>
 
<head>
<title>File Upload example</title>
</head> 
<body bgcolor="#ffffff">
<%a5 ? msg %>
<form action="<%a5 ? request.script_name %>" method="POST" enctype="multipart/form-data"> 
<input type="file" name="FileToUpload" value=""><br /> 
<input type="submit" name="cmd" value="Upload File"> 
</form> 
</body> 
</html>
    Steve Wood
    See my profile on IADN

    Tags: None
    #2
    Re: variables in the POST method

    The only time "cmd" with evaluate as valid is on a submit. The input type "file" has a number of defined subproperties, such as "filename", and "data". So when the form is submitted, the input object "FileToUpload", which is a "file" type, is submitted and has certain sub properties, such as "FileToUpload.filename" and "FileToUpload.data".

    You assumption is correct, as the filename is the name of the file to upload, and data is the content of the file, which can be blob(image) or text. The action copies the local file to a file with the same name on the folder specified on the server.

    The only reference to this is here

    Comment

      #3
      Re: variables in the POST method

      Ahh, probably why they don't have meaning inside of a dialog AfterValidate event. I am rewriting the procedure to work in a dialog event (almost there). I always thought a blob had to contain binary data and didn't apply to text. The reason I want this in a dialog is to provide related dropdown boxes in the form.

      The line...

      <input type="file" name="FileToUpload" value="">

      ...works fine inside a freeform area to provide a browse button for file selection.
      Steve Wood
      See my profile on IADN

      Comment

        #4
        Re: variables in the POST method

        Jerry, I think I've seen you do this before, how do I alter the html that is standard in the dialog component? I would like to append enctype="multipart/form-data" to this default line:

        <form id="UPLOAD.DIALOG" name="upload" style="margin: 0px;" method="POST" action="">

        making it:

        <form id="UPLOAD.DIALOG" name="upload" style="margin: 0px;" method="POST" action="" enctype="multipart/form-data">

        This, I believe, will allow me to use the dot notation for the blob subparameters within the dialog action.
        Steve Wood
        See my profile on IADN

        Comment

          #5
          Re: variables in the POST method

          Jerry,

          I was able to work through it (referring back to one of your examples from many moons ago). I used stritran to replace text at runtime in the A5W page. Here is the code:

          HTML Code:
          <%a5
'MY FORM REPLACEMENT CODE
x_upload.Output.Body.Dialog_HTML = stritran(x_upload.Output.Body.Dialog_HTML,"method=\"post\"","method=\"post\" enctype=\"multipart/form-data\"")
%>
          I also had to add the following to the freeform area of the upload filename field:

          HTML Code:
          <input type="file" name="FileToUpload" >
          As a result, not only can I upload files, but I can take full advantage of the Dialog component features. In the attached image I have a dropdownbox based on a related table. I could not do that just using the example in the Alpha Help.
          Steve Wood
          See my profile on IADN

          Comment

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