```ruby
class LiquidLayout < ActiveRecord::Base
  include HasLiquidPartials
  has_paper_trail

  has_many :pages
  belongs_to :default_follow_up_layout, class_name: LiquidLayout

  validates :title, presence: true, allow_blank: false
  validates :content, presence: true, allow_blank: false
  validates :experimental, inclusion: {in: [true, false]}

  scope :campaigner_friendly, -> { where(experimental: false) }

  def plugin_refs
    # pass depth of -1 to allow layouts one more level of nesting than partials
    super(depth: -1)
  end
end

```

Add new scopes for liquid layouts
user
```ruby
class LiquidLayout < ActiveRecord::Base
  include HasLiquidPartials
  has_paper_trail

  has_many :pages
  belongs_to :default_follow_up_layout, class_name: LiquidLayout

  validates :title, presence: true, allow_blank: false
  validates :content, presence: true, allow_blank: false
  validates :experimental, inclusion: {in: [true, false]}

  scope :campaigner_friendly, -> { where(experimental: false) }
  scope :with_default_layouts, -> { where.not(default_follow_up_layout: nil) }
  scope :primary_layouts, -> {where(primary_layout: true)}
  scope :post_action_layouts, -> { where(post_action_layout: true)}

  def plugin_refs
    # pass depth of -1 to allow layouts one more level of nesting than partials
    super(depth: -1)
  end
end

```
assistant