When searching for an org-roam note, the title isn’t always enough to tell if it’s what I was looking for. I want to preview the note without leaving the search interface (using helm).
To do that, I adapted this helm source for org-roam.
(defun helm-org-roam (&optional input candidates)
(interactive)
(require 'org-roam)
(helm
:input input
:sources (list
(helm-build-sync-source "Find note: "
:must-match nil
:fuzzy-match t
:candidates (or candidates (org-roam-node-read--completions))
:persistent-action (lambda (x)
(--> x
(view-file (org-roam-node-file it))))
:action
'(("Find File" . (lambda (x)
(--> x
(org-roam-node-visit it t))))
("Preview" . (lambda (x)
(--> x
(view-file (org-roam-node-file it)))))
("Insert link" . (lambda (x)
(--> x
(insert
(format
"[[id:%s][%s]]"
(org-roam-node-id it)
(org-roam-node-title it))))))
("Follow backlinks" . (lambda (x)
(let ((candidates
(--> x
org-roam-backlinks-get
(--map
(org-roam-node-title
(org-roam-backlink-source-node it))
it))))
(helm-org-roam nil (or candidates (list x))))))))
(helm-build-dummy-source
"Create note"
:action '(("Capture note" . (lambda (candidate)
(org-roam-capture-
:node (org-roam-node-create :title candidate)
:props '(:finalize find-file)))))))))
(global-set-key (kbd "C-c n f") 'helm-org-roam)
Now when I have a list of search results I can preview the file using the C-j without leaving the search session.