| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> |
| <title>File Upload with Rivet</title> |
| <link rel="stylesheet" href="../templates/wondrous/styles.css" type="text/css" /> |
| </head> |
| |
| <body> |
| <div id="container"> |
| <div id="header"> |
| <h1><a href="../index.html">Rivet</a></h1> |
| <h2 id="slogan">Webscripting for Tcl'ers</h2> |
| <div class="clear"></div> |
| </div> |
| <div id="body"> |
| <div id="content"> |
| <h2>File Upload with Rivet</h2> |
| <div class="example"> |
| <p class="title"> |
| <b>Example 4. File Upload</b> |
| </p> |
| <div class="example-contents"> |
| <p> |
| The <b>upload</b> |
| |
| command endows Rivet with an interface to access files transferred over http as |
| parts of a multipart form. The following HTML in one file, say, upload.html creates a form with a |
| text input entry. By clicking the file chooser button the file browser shows up and the user |
| selects the file to be uploaded (the file path will appear in the text input). In order to make |
| sure you're uploading the whole file you must combine the action of the enctype and method attributes |
| of the <b>form</b> |
| |
| tag in the way shown in the example. Failure to do so would result in the client |
| sending only the file's path, rather than the actual contents. |
| </p> |
| <pre class="programlisting"><form action="foo.rvt" enctype="multipart/form-data" method="post"> |
| <input type="file" name="MyUpload"></input> |
| <input type="submit" value="Send File"></input> |
| </form></pre> |
| <p> |
| In the script invoked by the form (upload.rvt) <b>upload ?argument ...?</b> |
| |
| commands can be used to |
| manipulate the various files uploaded. |
| </p> |
| <pre class="programlisting"><? |
| upload save MyUpload /tmp/uploadfiles/file1 |
| puts "Saved file [upload filename MyUpload] \ |
| ([upload size MyUpload] bytes) to server" |
| ?></pre> |
| <p> |
| Don't forget that the apache server must have write access to the directory where files are being created. |
| The Rivet Apache directives have a substantial impact on the upload process, you have to carefully read the |
| docs in order to set the appropriate directives values that would match your requirements. |
| </p> |
| <p> |
| It is also important to understand that some upload commands are effective only when used in a mutually |
| exclusive way. Apache stores the data in temporary files which are read by the |
| <b>upload save ?upload name? ?filename?</b> |
| |
| |
| or by the <b>upload data ?upload name?</b> |
| |
| command. Subsequent calls to these 2 commands using the |
| same <b>?upload name?</b> |
| |
| argument will return no data on the second call. Likewise upload channel |
| ?upload name? will return a Tcl file channel that you can use in regular Tcl scripts only if you |
| haven't already read the data, for example with a call to the upload data ?upload name? command. |
| </p> |
| </div> |
| </div> |
| |
| |
| |
| <div class="contentbottom"> |
| <div id="last_modified">Last Modified: 28-11-2018 15:39:22 UTC</div> |
| </div> |
| </div> |
| |
| <div class="sidebar"> |
| <ul> |
| <li id="tclstuff"> |
| <h4>Rivet & Tcl</h4> |
| <ul class="blocklist"> |
| <li class="navitem"> |
| <a class="navitem" title="The Rivet development team" href="about.html">About Us - Contact</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="Home of Apache Tcl related stuff" target="asf" href="http://tcl.apache.org/">Apache Tcl Home</a> |
| </li> |
| <li class="navitem"> |
| <a class="extern" title="The Tcl Developer Xchange" target="tclxchange" href="http://www.tcl.tk/">The Tcl/Tk Language</a> |
| </li> |
| <li class="navitem"> |
| <a class="extern" title="Tcl community wiki site" target="tclwiki" href="http://wiki.tcl.tk/">Tcl'ers Wiki</a> |
| </li> |
| </ul> |
| </li> |
| <li id="rivetstuff"> |
| <h4>Getting Rivet to Work</h4> |
| <ul class="blocklist"> |
| <li class="navitem"> |
| <a class="navitem" title="Getting Rivet" href="download.html">Getting Rivet</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="Release Notes" href="release%2dnotes.html">Release Notes</a> |
| </li> |
| <li class="navitem"> |
| <a class="extern" title="Apache Rivet Bugzilla" href="https://issues.apache.org/bugzilla/buglist.cgi?quicksearch=Rivet">Bug Reports</a> |
| </li> |
| </ul> |
| </li> |
| <li id="documentation"> |
| <h4>Documentation</h4> |
| <ul class="blocklist"> |
| <li class="navitem"> |
| <a class="navitem" title="Examples" href="hello%5fworld.html">Examples</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="Manuals" href="manuals.html">Manuals</a> |
| </li> |
| </ul> |
| </li> |
| |
| </ul> |
| <ul> |
| <li id="rivetexamples"> |
| <h4>Examples</h4> |
| <ul class="blocklist"> |
| <li class="navitem"> |
| <a class="navitem" title="Hello world!" href="hello%5fworld.html">Hello world!</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="A colorful table" href="colorful%5ftable.html">A colorful table</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="Variable Access" href="var%5faccess.html">Variable Access</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="File Upload" href="file%5fupload.html">File Upload</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="File Download" href="file%5fdownload.html">File Download</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="XML and Ajax" href="ajax.html">XML and Ajax</a> |
| </li> |
| <li class="navitem"> |
| <a class="navitem" title="Calendar" href="calendar.html">Calendar</a> |
| </li> |
| </ul> |
| </li> |
| |
| </ul> |
| <ul> |
| |
| </ul> |
| </div> |
| <div class="clear"></div> |
| </div> |
| </div> |
| <div id="footer"> |
| <div class="footer-content"> |
| <p><a href="http://www.apache.org/">Apache Software Foundation</a> | Design by <a href="http://www.spyka.net">Free CSS Templates</a> | <a href="http://www.justfreetemplates.com">Free Web Templates</a></p> |
| </div> |
| </div> |
| <div style="text-align: center; font-size: 0.75em;">Design downloaded from <a href="http://www.freewebtemplates.com/">free website templates</a>.</div></body> |
| </html> |
| |
