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JavaScript xdmp.getRequestField

MarkLogic 12 Product Documentation
xdmp:get-request-field

xdmp:get-request-field(
   $name as xs:string,
   [$default as xs:string?]
) as item()*

Summary

Returns the value of a named request field. If the request field is a multipart/form-data type in a POST form, you can use xdmp:get-request-field for file upload applications (see the second example below).

Parameters
name Request field name.
default A default value to return if there is no request field.

Example

xdmp:get-request-field("index")
=> "10"

Example

Consider a form.xqy XQuery module with the following content:

  <html xmlns="http://www.w3.org/1999/xhtml">
    <body>
    <form name="test" action="upload.xqy?uid={xdmp:random()}" method="post"
          enctype="multipart/form-data">
    <p><label>File to upload:
    <input type="file" class="name" name="upload" size="50"/></label></p>
    <p><input type="submit" value="Upload and Get Results"/></p>
    </form>
    </body>
  </html>

Then have an upload.xqy XQuery module as follows:

 let $filename := xdmp:get-request-field-filename("upload")
 let $disposition := fn:concat("attachment; filename=""",$filename,"""")
 let $x := xdmp:add-response-header("Content-Disposition", $disposition)
 let $x:= xdmp:set-response-content-type(
             xdmp:get-request-field-content-type("upload"))
 return
 xdmp:get-request-field("upload")

Execute the form.xqy file, select a file, and click the
"Upload and Get Results" button.  The file you uploaded
will open according to the mime type the browser.  If you
wanted to save it to the database, you could use
xdmp:document-insert to do so.

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