Re: [basex-talk] Forcing download of JSON doc

Maybe using json:serialize() rather than serialize?

In general if output:method is set to Json it should be sufficient to return map{} or array{} or alternatively the XML version of a json document without having to explicitly serialize ...

M.

On 01/08/19 14:36, Tim Thompson wrote:

Thank you, Marco. So, the download issue seems to be with XForms (XSLTForms) rather than BaseX. If I do a file upload from a plain HTML form, the file download is triggered correctly. However, even though I have set "application/json" as the Content-Type, the contents of the downloaded file are an escaped string rather than a serialized JSON object: e.g.,

"{\n  "key": "value"\n}" Is there a way to produce a properly serialized JSON file for download?

-- Tim A. Thompson Discovery Metadata Librarian Yale University Library

On Thu, Aug 1, 2019 at 3:03 AM Marco Lettere <m.lettere@gmail.com mailto:m.lettere@gmail.com> wrote:

Hi Tim,
downloading from a browser when posting a form is usually a bit
tricky. For me it always ended up with the creation of an
artificial <a ...> element with an href crafted from the form
parameters and with an attribute download="filename.ext" added to it.
Anyway you could try with returning a "forced"
application/octet-stream Content-Type header ....

M.

On 01/08/19 05:00, Tim Thompson wrote:

...

Hello,

I am posting a JSON doc to a RESTXQ function from XForms and
trying to set a Content-Disposition header to trigger a file
download. Is this possible to do without first saving the JSON
doc as a file? Right now, the RESTXQ function returns the correct
headers, but does not force a file download dialog.

Thanks in advance!
Tim

--
Query:

xquery version "3.1";

module namespace wrap = "http://example.org/wrap";

declare
  %rest:path("/wrap")
  %rest:POST("{$data}")
  %output:method("json")
function wrap:process(
  $data as node()
) as item()* {
  let $name := data($data/data/upload/file/@name)
  let $json := json-to-xml($data/data/upload/file)
  let $header :=
    ``[attachment; filename="`{$name}`";]``
  return
    (
    <rest:response>
      <http:response
        status="200" message="OK">
        <http:header
          name="Content-Type"
          value="application/json"/>
        <http:header
          name="Content-Disposition"
          value="{$header}"/>
      </http:response>
    </rest:response>,

    <map xmlns="http://www.w3.org/2005/xpath-functions">
        <map
          key="Profile">
          <array
key="resourceTemplates">{$json}</array>
          <string
key="title">Wrapper_Profile</string>
          <string
key="id">Wrapper:Profile:BF2</string>
          <string
            key="description">Profile wrapper for resource
templates</string>
          <string
            key="author">Wrapper</string>
          <string
           
key="schema">https://ld4p.github.io/sinopia/schemas/0.0.9/profile.json</string>
          <string
key="date">{current-dateTime()}</string>
        </map>
    </map> => xml-to-json() => parse-json() => serialize(map
{'method': 'json', 'use-character-maps' : map {'/' : '/'}})
    )
};


--
Tim A. Thompson
Discovery Metadata Librarian
Yale University Library