class Pdfresource < ApplicationRecord
  has_many_attached :pdfs
  has_many_attached :thumbnails
  has_many_attached :pdf_snapshots
  belongs_to :resource_type
  validates :feature_slot,
            inclusion: { in: [ 1, 2, 3 ], message: "must be 1, 2, or 3" },
            uniqueness: { message: "is already taken by another featured resource" },
            allow_nil: true
  validate :validate_pdf_count
  validates :name, :thumbnails, :description, :card_description, :pdfs, :credits, presence: true


  def validate_pdf_count
    if pdfs.size > 10
      errors.add(:pdfs, "You can upload up to 10 PDFs per resource.")
    end
  end
end