Read custom user configuration for vis.Network options

[wohanley]

My network is pretty big, so it's useful to be able to tweak the physics options for vis.Network. These changes make that possible.

[goktug97]

As the mimetype is application/json you don't need data: %s\n\n. It should be the json itself to work.

(defservlet* network-vis-options application/json (token)
  (if org-roam-server-authenticate
      (if (not (string= org-roam-server-token token))
          (httpd-error httpd-current-proc 403)))
  (insert (or org-roam-server-network-vis-options "{}")))

Add example to encode the json using elisp

(defcustom org-roam-server-network-vis-options nil
  "Options to be passed directly to vis.Network, in JSON format.
e.g. (json-encode (list (cons 'physics (list (cons 'enabled json-false)))))
or { \"physics\": { \"enabled\": false } }"
  :group 'org-roam-server
  :type 'string)

[wohanley]

Sorry about the force push, didn't notice you had looked at this already. Thanks for the tip - I'm still mostly unclear on what exactly $.get does.

[goktug97]

Thank you for the PR, it works perfectly.