Split mentions and tagging from the actual notes

app/assets/stylesheets/components/notes.css

@@ -107,6 +107,25 @@
   margin-bottom: var(--spacing-2);
 }
 
+.note-form-fields {
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-2);
+}
+
+.note-meta-fields {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
+  gap: var(--spacing-3);
+}
+
+.note-field label {
+  display: block;
+  font-weight: var(--font-weight-medium);
+  margin-bottom: var(--spacing-1);
+  color: var(--color-text-primary);
+}
+
 .note-textarea {
   width: 100%;
   border-radius: var(--border-radius-sm);
@@ -116,6 +135,21 @@
   font-size: var(--font-size-base);
 }
 
+.note-text-field {
+  width: 100%;
+  border-radius: var(--border-radius-sm);
+  border: var(--border-width) solid var(--color-border);
+  padding: var(--spacing-2);
+  font-family: var(--font-family-base);
+  font-size: var(--font-size-base);
+}
+
+.note-hint {
+  margin-top: 4px;
+  color: var(--color-text-muted);
+  font-size: var(--font-size-xs);
+}
+
 .note-actions {
   display: flex;
   justify-content: flex-end;

app/controllers/notes_controller.rb

@@ -7,7 +7,13 @@ class NotesController < ApplicationController
   def create
     topic = Topic.find(note_params[:topic_id])
     message = resolve_message(topic)
-    note = NoteBuilder.new(author: current_user).create!(topic:, message:, body: note_params[:body])
+    note = NoteBuilder.new(author: current_user).create!(
+      topic:,
+      message:,
+      body: note_params[:body],
+      tags: parsed_tags,
+      mention_names: parsed_mentions
+    )
 
     redirect_to topic_path(topic, anchor: note_anchor(note)), notice: "Note added"
   rescue NoteBuilder::Error, ActiveRecord::RecordInvalid => e
@@ -16,6 +22,8 @@ def create
       body: note_params[:body],
       message_id: note_params[:message_id].presence,
       topic_id: note_params[:topic_id],
+      tags_input: note_params[:tags_input],
+      mentions_input: note_params[:mentions_input],
       error: e.message
     }
     redirect_back fallback_location: topic_path(topic)
@@ -24,7 +32,12 @@ def create
   def update
     return if performed?
 
-    NoteBuilder.new(author: current_user).update!(note: @note, body: note_params[:body])
+    NoteBuilder.new(author: current_user).update!(
+      note: @note,
+      body: note_params[:body],
+      tags: parsed_tags,
+      mention_names: parsed_mentions
+    )
 
     redirect_to topic_path(@note.topic, anchor: note_anchor(@note)), notice: "Note updated"
   rescue NoteBuilder::Error, ActiveRecord::RecordInvalid => e
@@ -34,6 +47,8 @@ def update
       message_id: note_params[:message_id].presence,
       topic_id: note_params[:topic_id],
       note_id: @note.id,
+      tags_input: note_params[:tags_input],
+      mentions_input: note_params[:mentions_input],
       error: e.message
     }
     redirect_back fallback_location: topic_path(@note.topic)
@@ -67,7 +82,7 @@ def set_note
   end
 
   def note_params
-    params.require(:note).permit(:body, :topic_id, :message_id)
+    params.require(:note).permit(:body, :topic_id, :message_id, :tags_input, :mentions_input)
   end
 
   def resolve_message(topic)
@@ -82,4 +97,20 @@ def note_anchor(note)
       "thread-notes"
     end
   end
+
+  def parsed_tags
+    split_tokens(note_params[:tags_input]) { |token| token.delete_prefix("#") }
+  end
+
+  def parsed_mentions
+    split_tokens(note_params[:mentions_input]) { |token| token.delete_prefix("@") }
+  end
+
+  def split_tokens(raw, &block)
+    Array(raw.to_s.split(/[,\s]+/))
+      .map { |token| token.strip }
+      .reject(&:blank?)
+      .map(&block)
+      .reject(&:blank?)
+  end
 end

app/services/note_builder.rb

@@ -7,21 +7,21 @@ def initialize(author:)
     @author = author
   end
 
-  def create!(topic:, message: nil, body:)
+  def create!(topic:, message: nil, body:, tags: [], mention_names: [])
     raise Error, "You must be signed in to add a note" unless author
     body_text = body.to_s.strip
     raise Error, "Note cannot be blank" if body_text.blank?
 
     ActiveRecord::Base.transaction do
       note = Note.new(topic:, message:, author:, last_editor: author, body: body_text)
       note.save!
-      mentionables, tags = rebuild_mentions_and_tags!(note, body_text)
+      mentionables, tags = rebuild_mentions_and_tags!(note, tags:, mention_names:)
       fan_out!(note:, mentionables:, mark_author_read: true)
       note
     end
   end
 
-  def update!(note:, body:)
+  def update!(note:, body:, tags: [], mention_names: [])
     raise Error, "You do not have permission to edit this note" unless note.author_id == author.id
     body_text = body.to_s.strip
     raise Error, "Note cannot be blank" if body_text.blank?
@@ -30,7 +30,7 @@ def update!(note:, body:)
       note.note_edits.create!(editor: author, body: note.body) if note.body != body_text
       note.update!(body: body_text, last_editor: author)
 
-      mentionables, _tags = rebuild_mentions_and_tags!(note, body_text)
+      mentionables, _tags = rebuild_mentions_and_tags!(note, tags:, mention_names:)
       fan_out!(note:, mentionables:, mark_author_read: false)
       note
     end
@@ -40,38 +40,37 @@ def update!(note:, body:)
 
   attr_reader :author
 
-  def rebuild_mentions_and_tags!(note, body_text)
-    mention_names = extract_mentions(body_text)
-    mentionables = resolve_mentions(mention_names)
-    tags = extract_tags(body_text)
+  def rebuild_mentions_and_tags!(note, tags:, mention_names:)
+    normalized_mentions = normalize_mentions(mention_names)
+    mentionables = resolve_mentions(normalized_mentions)
+    normalized_tags = normalize_tags(tags)
 
     note.note_mentions.delete_all
     mentionables.each do |mentionable|
       note.note_mentions.create!(mentionable:)
     end
 
     note.note_tags.delete_all
-    tags.each do |tag|
+    normalized_tags.each do |tag|
       note.note_tags.create!(tag:)
     end
 
-    [mentionables, tags]
+    [mentionables, normalized_tags]
   end
 
-  def extract_mentions(text)
-    text.to_s.scan(/(?:^|[^@\w])@([A-Za-z0-9_.-]+)/)
-        .flatten
-        .map { |m| NameReservation.normalize(m) }
-        .reject(&:blank?)
-        .uniq
+  def normalize_mentions(mention_names)
+    Array(mention_names)
+      .map { |m| m.to_s.delete_prefix("@") }
+      .map { |m| NameReservation.normalize(m) }
+      .reject(&:blank?)
+      .uniq
   end
 
-  def extract_tags(text)
-    text.to_s.scan(/(?:^|[^#\w])#([A-Za-z0-9_.-]+)/)
-        .flatten
-        .map { |t| t.to_s.strip.downcase }
-        .select { |tag| tag.match?(NoteTag::TAG_FORMAT) }
-        .uniq
+  def normalize_tags(tags)
+    Array(tags)
+      .map { |t| t.to_s.delete_prefix("#").strip.downcase }
+      .select { |tag| tag.match?(NoteTag::TAG_FORMAT) }
+      .uniq
   end
 
   def resolve_mentions(names)

app/views/notes/_form.html.slim

@@ -3,18 +3,33 @@
 - note_error = flash[:note_error]&.with_indifferent_access
 
 - prefill_body = form_note.body
+- prefill_tags = form_note.note_tags.map(&:tag).join(", ")
+- prefill_mentions = form_note.note_mentions.includes(:mentionable).map { |mention| note_mention_label(mention) }.join(", ")
 - if note_error
   - matches_note = note_error[:note_id].present? && form_note.persisted? && form_note.id == note_error[:note_id].to_i
   - matches_new_note = !form_note.persisted? && note_error[:topic_id].to_i == topic.id && note_error[:message_id].to_s == message&.id.to_s
   - if matches_note || matches_new_note
     - prefill_body = note_error[:body]
+    - prefill_tags = note_error[:tags_input].to_s
+    - prefill_mentions = note_error[:mentions_input].to_s
 
 = form_with model: form_note, url: form_note.persisted? ? note_path(form_note) : notes_path, method: form_note.persisted? ? :patch : :post, data: { turbo: true } do |f|
   = hidden_field_tag "note[topic_id]", topic.id
   = hidden_field_tag "note[message_id]", message&.id
-  .note-field
-    = f.text_area :body, rows: 3, placeholder: "Add a note with @mentions and #tags…", required: true, class: "note-textarea", value: prefill_body
-    - if note_error && prefill_body == note_error[:body]
-      .note-error = note_error[:error]
+  .note-form-fields
+    .note-field
+      = f.label :body, "Note"
+      = f.text_area :body, rows: 4, placeholder: "Write your note", required: true, class: "note-textarea", value: prefill_body
+      - if note_error && prefill_body == note_error[:body]
+        .note-error = note_error[:error]
+    .note-meta-fields
+      .note-field
+        = label_tag :note_mentions_input, "Mentions"
+        = text_field_tag "note[mentions_input]", prefill_mentions, placeholder: "@alice, @team", class: "note-text-field"
+        .note-hint "Notify people or teams. Separate with commas or spaces."
+      .note-field
+        = label_tag :note_tags_input, "Tags"
+        = text_field_tag "note[tags_input]", prefill_tags, placeholder: "release, docs, follow-up", class: "note-text-field"
+        .note-hint "Optional tags for filtering. Lowercase letters, numbers, dash, underscore, or dot."
   .note-actions
     = f.submit submit_label, class: "button-secondary"

db/seeds.rb

@@ -913,48 +913,56 @@ def mark_aware_until(user:, topic:, message:, timestamp:)
 alice_notes.create!(
   topic: patch_topic,
   message: msg3,
-  body: "- Add WAL position to progress report\n- Split heap vs index counters\n- Autovacuum should emit too\n@ExampleCompany please sync on scope"
+  body: "- Add WAL position to progress report\n- Split heap vs index counters\n- Autovacuum should emit too\nExampleCompany please sync on scope",
+  mention_names: [example_team.name]
 )
 bob_notes.create!(
   topic: patch_topic,
   message: msg1,
-  body: "Queued for next CF round; tracking in CF app.\n@ExampleCompany heads-up for review bandwidth"
+  body: "Queued for next CF round; tracking in CF app.\nExampleCompany heads-up for review bandwidth",
+  mention_names: [example_team.name]
 )
 
 # RFC thread notes (thread + message, different authors)
 carol_notes.create!(
   topic: rfc_topic,
-  body: "Thread summary: add index AM hooks, include sample AM + docs.\n@ExampleCompany track follow-ups"
+  body: "Thread summary: add index AM hooks, include sample AM + docs.\nExampleCompany track follow-ups",
+  mention_names: [example_team.name]
 )
 alice_notes.create!(
   topic: rfc_topic,
   message: rfc_msg2,
-  body: "Docs + sample AM needed before commit. Add SGML + README.\n@ExampleCompany can we help draft?"
+  body: "Docs + sample AM needed before commit. Add SGML + README.\nExampleCompany can we help draft?",
+  mention_names: [example_team.name]
 )
 
 # Discussion thread: mix of thread/message notes from different people
 carol_notes.create!(
   topic: discussion_topic,
-  body: "Thread note: align logical slots with failover, add standby-safe flag.\n@ExampleCompany capture design risks"
+  body: "Thread note: align logical slots with failover, add standby-safe flag.\nExampleCompany capture design risks",
+  mention_names: [example_team.name]
 )
 alice_notes.create!(
   topic: discussion_topic,
   message: disc_msg4,
-  body: "Message note: prototype slot fencing, watch cascading setups; prefer heartbeat piggyback.\n@ExampleCompany please review"
+  body: "Message note: prototype slot fencing, watch cascading setups; prefer heartbeat piggyback.\nExampleCompany please review",
+  mention_names: [example_team.name]
 )
 
 # Committer topic: partially read with a note
 bob_notes.create!(
   topic: committer_topic,
   message: committer_messages[3],
-  body: "Action: test lower freeze_age under heavy autovacuum.\n@ExampleCompany check lab capacity"
+  body: "Action: test lower freeze_age under heavy autovacuum.\nExampleCompany check lab capacity",
+  mention_names: [example_team.name]
 )
 
 # Moderate topic note for visibility
 carol_notes.create!(
   topic: moderate_topic_1,
   message: moderate_msgs_1[5],
-  body: "Pooling experiments look good; consider adaptive target.\n@ExampleCompany let's benchmark with PG16"
+  body: "Pooling experiments look good; consider adaptive target.\nExampleCompany let's benchmark with PG16",
+  mention_names: [example_team.name]
 )
 
 # Notes on extra sampler topics for visibility across pages

spec/services/note_builder_spec.rb

@@ -11,7 +11,13 @@
     team_member = create(:user, username: "carl")
     create(:team_member, team:, user: team_member)
 
-    note = described_class.new(author: author).create!(topic:, message:, body: "Ping @bob and @team-two #Foo #bar")
+    note = described_class.new(author: author).create!(
+      topic:,
+      message:,
+      body: "Ping for review",
+      tags: %w[foo bar],
+      mention_names: %w[bob team-two]
+    )
 
     expect(note.note_tags.pluck(:tag)).to match_array(%w[foo bar])
     expect(note.note_mentions.map(&:mentionable)).to match_array([mentioned_user, team])
@@ -30,8 +36,8 @@
     carol = create(:user, username: "carol")
 
     builder = described_class.new(author: author)
-    note = builder.create!(topic:, message:, body: "Hi @bob and @devs")
-    builder.update!(note:, body: "Hi @bob and @carol")
+    note = builder.create!(topic:, message:, body: "Hi team", mention_names: %w[bob devs])
+    builder.update!(note:, body: "Hi friends", mention_names: %w[bob carol])
 
     old_activity = Activity.find_by(user: dev_member, subject: note)
     new_activity = Activity.find_by(user: carol, subject: note)