Basic feature implemented, very basic poc

app/controllers/checklists_controller.rb

@@ -0,0 +1,61 @@
+class ChecklistsController < ApplicationController
+  before_action :set_checklist, only: %i[show edit update destroy]
+
+  # GET /checklists
+  def index
+    @checklists = Checklist.all
+  end
+
+  # GET /checklists/1
+  def show
+  end
+
+  # GET /checklists/new
+  def new
+    @checklist = Checklist.new
+  end
+
+  # GET /checklists/1/edit
+  def edit
+    @checklist.checklist_entries.build
+  end
+
+  # POST /checklists
+  def create
+    @checklist = Checklist.new(checklist_params)
+
+    if @checklist.save
+      redirect_to @checklist, notice: 'Checklist was successfully created.'
+    else
+      render :new, status: :unprocessable_entity
+    end
+  end
+
+  # PATCH/PUT /checklists/1
+  def update
+    if @checklist.update(checklist_params)
+      redirect_to @checklist, notice: 'Checklist was successfully updated.', status: :see_other
+    else
+      render :edit, status: :unprocessable_entity
+    end
+  end
+
+  # DELETE /checklists/1
+  def destroy
+    @checklist.destroy!
+    redirect_to checklists_url, notice: 'Checklist was successfully destroyed.', status: :see_other
+  end
+
+  private
+
+  # Use callbacks to share common setup or constraints between actions.
+  def set_checklist
+    @checklist = Checklist.find(params[:id])
+  end
+
+  # Only allow a list of trusted parameters through.
+  def checklist_params
+    params.require(:checklist).permit(:code, :name, :description,
+                                      checklist_entries_attributes: %i[id check_id position _destroy])
+  end
+end