Post model, Posts controller, fields.yaml, migration file

create_posts_table.php

<?php namespace Acme\Demo\Updates;

use Schema;
use October\Rain\Database\Schema\Blueprint;
use October\Rain\Database\Updates\Migration;

class CreatePostsTable extends Migration
{
    public function up()
    {
        Schema::create('acme_demo_posts', function (Blueprint $table) {
            $table->engine = 'InnoDB';
            $table->increments('id');
            $table->text('content')->nullable();
        });
    }

    public function down()
    {
        Schema::dropIfExists('acme_demo_posts');
    }
}

fields.yaml

# ===================================
#  Form Field Definitions
# ===================================

fields:
    content:
        label: Content
        type: repeater
        prompt: Add Content Item
        form:
            fields:
                blocks:
                    label: Blocks
                    type: repeater
                    prompt: Add Block Item
                    form:
                        fields:
                            title:
                                label: Description
                                type: textarea

Post.php

<?php namespace Acme\Demo\Models;

use Model;

/**
 * Post Model
 */
class Post extends Model
{
    /**
     * @var string The database table used by the model.
     */
    public $table = 'acme_demo_posts';

    public $timestamps = false;

    /**
     * @var array Attribute names to encode and decode using JSON.
     */
    protected $jsonable = [
        'content',
    ];

    /**
     * @var array Guarded fields
     */
    protected $guarded = ['*'];

    /**
     * @var array Fillable fields
     */
    protected $fillable = [];

    /**
     * @var array Relations
     */
    public $hasOne = [];
    public $hasMany = [];
    public $belongsTo = [];
    public $belongsToMany = [];
    public $morphTo = [];
    public $morphOne = [];
    public $morphMany = [];
    public $attachOne = [];
    public $attachMany = [];
}

Posts.php

<?php namespace Acme\Demo\Controllers;

use BackendMenu;
use Backend\Classes\Controller;

/**
 * Posts Back-end Controller
 */
class Posts extends Controller
{
    public $implement = [
        'Backend.Behaviors.FormController',
        'Backend.Behaviors.ListController'
    ];

    public $formConfig = 'config_form.yaml';
    public $listConfig = 'config_list.yaml';

    public function __construct()
    {
        parent::__construct();

        BackendMenu::setContext('Acme.Demo', 'demo', 'posts');
    }
}