Select cards with #

app/controllers/prompts/cards_controller.rb

@@ -0,0 +1,15 @@
+class Prompts::CardsController < ApplicationController
+  def index
+    @cards = if filter_param.present?
+      Current.user.accessible_cards.mentioning(filter_param)
+    else
+      Current.user.accessible_cards.latest.limit(10)
+    end
+    render layout: false
+  end
+
+  private
+    def filter_param
+      params[:filter]
+    end
+end

app/helpers/rich_text_helper.rb

@@ -2,4 +2,8 @@ module RichTextHelper
   def mentions_prompt
     content_tag "lexical-prompt", "", trigger: "@", src: prompts_users_path, name: "mention"
   end
+
+  def cards_prompt
+    content_tag "lexical-prompt", "", trigger: "#", src: prompts_cards_path, name: "card", "insert-editable-text": true, "remote-filtering": true
+  end
 end

app/models/card/searchable.rb

@@ -45,7 +45,7 @@ module Card::Searchable
   private
     # TODO: Temporary until we stabilize the search API
     def title_and_description
-      [ title, description.to_plain_text ].join(" ")
+      [ id.to_s, title, description.to_plain_text ].join(" ")
     end
 
     def search_embedding_content

app/models/concerns/searchable.rb

@@ -68,3 +68,4 @@ module Searchable
       search_embedding&.destroy
     end
 end
+

app/views/cards/edit.html.erb

@@ -12,6 +12,7 @@
           placeholder: "Add some notes, context, pictures, or video about this…",
           data: { action: "keydown.ctrl+enter->form#submit:prevent keydown.meta+enter->form#submit:prevent keydown.esc->form#cancel:stop" } do %>
       <%= mentions_prompt %>
+      <%= cards_prompt %>
     <% end %>
     </div>
     <%= form.button "Save changes", type: :submit, class: "btn btn--reversed", style: "--btn-background: #{@card.color}" %>

app/views/prompts/cards/_card.html.erb

@@ -0,0 +1,8 @@
+<lexical-prompt-item>
+  <template type="menu">
+    #<%= card.id %> <%= card.title %>
+  </template>
+  <template type="editor">
+    <%= link_to "##{card.id} #{card.title}", collection_card_url(card.collection, card) %>
+  </template>
+</lexical-prompt-item>

app/views/prompts/cards/index.html.erb

@@ -0,0 +1 @@
+<%= render partial: "prompts/cards/card", collection: @cards %>

config/routes.rb

@@ -105,6 +105,7 @@ Rails.application.routes.draw do
 
   namespace :prompts do
     resources :users
+    resources :cards
   end
 
   namespace :public do

db/schema.rb

@@ -324,6 +324,7 @@ ActiveRecord::Schema[8.1].define(version: 2025_06_09_102553) do
     t.datetime "created_at", null: false
     t.string "title"
     t.datetime "updated_at", null: false
+    t.index ["title"], name: "index_tags_on_account_id_and_title", unique: true
   end
 
   create_table "users", force: :cascade do |t|

db/schema_cache.yml

@@ -2200,7 +2200,23 @@ indexes:
     nulls_not_distinct:
     comment:
     valid: true
-  tags: []
+  tags:
+  - !ruby/object:ActiveRecord::ConnectionAdapters::IndexDefinition
+    table: tags
+    name: index_tags_on_account_id_and_title
+    unique: true
+    columns:
+    - title
+    lengths: {}
+    orders: {}
+    opclasses: {}
+    where:
+    type:
+    using:
+    include:
+    nulls_not_distinct:
+    comment:
+    valid: true
   users:
   - !ruby/object:ActiveRecord::ConnectionAdapters::IndexDefinition
     table: users