Add basic column models and script to migrate

db/migrate/20250924100149_create_columns_and_add_column_id_to_cards.rb

@@ -0,0 +1,12 @@
+class CreateColumnsAndAddColumnIdToCards < ActiveRecord::Migration[8.1]
+  def change
+    create_table :columns do |t|
+      t.string :name,  null: false
+      t.string :color, null: false
+      t.references :collection, null: false, foreign_key: true
+      t.timestamps
+    end
+
+    add_reference :cards, :column, foreign_key: true, index: true
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.1].define(version: 2025_09_17_064006) do
+ActiveRecord::Schema[8.1].define(version: 2025_09_24_100149) do
   create_table "accesses", force: :cascade do |t|
     t.datetime "accessed_at"
     t.integer "collection_id", null: false
@@ -133,6 +133,7 @@ ActiveRecord::Schema[8.1].define(version: 2025_09_17_064006) do
 
   create_table "cards", force: :cascade do |t|
     t.integer "collection_id", null: false
+    t.integer "column_id"
     t.datetime "created_at", null: false
     t.integer "creator_id", null: false
     t.date "due_on"
@@ -142,6 +143,7 @@ ActiveRecord::Schema[8.1].define(version: 2025_09_17_064006) do
     t.string "title"
     t.datetime "updated_at", null: false
     t.index ["collection_id"], name: "index_cards_on_collection_id"
+    t.index ["column_id"], name: "index_cards_on_column_id"
     t.index ["last_active_at", "status"], name: "index_cards_on_last_active_at_and_status"
     t.index ["stage_id"], name: "index_cards_on_stage_id"
   end
@@ -197,6 +199,15 @@ ActiveRecord::Schema[8.1].define(version: 2025_09_17_064006) do
     t.index ["filter_id"], name: "index_collections_filters_on_filter_id"
   end
 
+  create_table "columns", force: :cascade do |t|
+    t.integer "collection_id", null: false
+    t.string "color", null: false
+    t.datetime "created_at", null: false
+    t.string "name", null: false
+    t.datetime "updated_at", null: false
+    t.index ["collection_id"], name: "index_columns_on_collection_id"
+  end
+
   create_table "comments", force: :cascade do |t|
     t.integer "card_id", null: false
     t.datetime "created_at", null: false
@@ -508,11 +519,13 @@ ActiveRecord::Schema[8.1].define(version: 2025_09_17_064006) do
   add_foreign_key "ai_quotas", "users"
   add_foreign_key "card_activity_spikes", "cards"
   add_foreign_key "card_goldnesses", "cards"
+  add_foreign_key "cards", "columns"
   add_foreign_key "cards", "workflow_stages", column: "stage_id"
   add_foreign_key "closures", "cards"
   add_foreign_key "closures", "users"
   add_foreign_key "collection_publications", "collections"
   add_foreign_key "collections", "workflows"
+  add_foreign_key "columns", "collections"
   add_foreign_key "comments", "cards"
   add_foreign_key "conversation_messages", "conversations"
   add_foreign_key "conversations", "users"

db/schema_cache.yml

@@ -435,6 +435,16 @@ columns:
   - *9
   cards:
   - *24
+  - !ruby/object:ActiveRecord::ConnectionAdapters::SQLite3::Column
+    auto_increment:
+    name: column_id
+    cast_type: *3
+    sql_type_metadata: *4
+    'null': true
+    default:
+    default_function:
+    collation:
+    comment:
   - *5
   - &25 !ruby/object:ActiveRecord::ConnectionAdapters::SQLite3::Column
     auto_increment:
@@ -610,6 +620,22 @@ columns:
   collections_filters:
   - *24
   - *20
+  columns:
+  - *24
+  - !ruby/object:ActiveRecord::ConnectionAdapters::SQLite3::Column
+    auto_increment:
+    name: color
+    cast_type: *7
+    sql_type_metadata: *8
+    'null': false
+    default:
+    default_function:
+    collation:
+    comment:
+  - *5
+  - *6
+  - *10
+  - *9
   comments:
   - *23
   - *5
@@ -1495,6 +1521,7 @@ primary_keys:
   collection_publications: id
   collections: id
   collections_filters:
+  columns: id
   comments: id
   conversation_messages: id
   conversations: id
@@ -1549,6 +1576,7 @@ data_sources:
   collection_publications: true
   collections: true
   collections_filters: true
+  columns: true
   comments: true
   conversation_messages: true
   conversations: true
@@ -1989,6 +2017,22 @@ indexes:
     nulls_not_distinct:
     comment:
     valid: true
+  - !ruby/object:ActiveRecord::ConnectionAdapters::IndexDefinition
+    table: cards
+    name: index_cards_on_column_id
+    unique: false
+    columns:
+    - column_id
+    lengths: {}
+    orders: {}
+    opclasses: {}
+    where:
+    type:
+    using:
+    include:
+    nulls_not_distinct:
+    comment:
+    valid: true
   - !ruby/object:ActiveRecord::ConnectionAdapters::IndexDefinition
     table: cards
     name: index_cards_on_last_active_at_and_status
@@ -2205,6 +2249,23 @@ indexes:
     nulls_not_distinct:
     comment:
     valid: true
+  columns:
+  - !ruby/object:ActiveRecord::ConnectionAdapters::IndexDefinition
+    table: columns
+    name: index_columns_on_collection_id
+    unique: false
+    columns:
+    - collection_id
+    lengths: {}
+    orders: {}
+    opclasses: {}
+    where:
+    type:
+    using:
+    include:
+    nulls_not_distinct:
+    comment:
+    valid: true
   comments:
   - !ruby/object:ActiveRecord::ConnectionAdapters::IndexDefinition
     table: comments
@@ -3191,4 +3252,4 @@ indexes:
     comment:
     valid: true
   workflows: []
-version: 20250917064006
+version: 20250924100149