module ActionText class TrixAttachment TAG_NAME = "figure" SELECTOR = "[data-trix-attachment]" ATTRIBUTES = %w( sgid contentType url href filename filesize width height previewable content caption ) ATTRIBUTE_TYPES = { "previewable" => ->(value) { value.to_s == "true" }, "filesize" => ->(value) { Integer(value.to_s) rescue value }, "width" => ->(value) { Integer(value.to_s) rescue nil }, "height" => ->(value) { Integer(value.to_s) rescue nil }, :default => ->(value) { value.to_s } } class << self def from_attributes(attributes) attributes = process_attributes(attributes) trix_attachment_attributes = attributes.except("caption") trix_attributes = attributes.slice("caption") node = ActionText::HtmlConversion.create_element(TAG_NAME) node["data-trix-attachment"] = JSON.generate(trix_attachment_attributes) node["data-trix-attributes"] = JSON.generate(trix_attributes) if trix_attributes.any? new(node) end private def process_attributes(attributes) typecast_attribute_values(transform_attribute_keys(attributes)) end def transform_attribute_keys(attributes) attributes.transform_keys { |key| key.to_s.underscore.camelize(:lower) } end def typecast_attribute_values(attributes) attributes.map do |key, value| typecast = ATTRIBUTE_TYPES[key] || ATTRIBUTE_TYPES[:default] [key, typecast.call(value)] end.to_h end end attr_reader :node def initialize(node) @node = node end def attributes @attributes ||= attachment_attributes.merge(composed_attributes).slice(*ATTRIBUTES) end def to_html ActionText::HtmlConversion.node_to_html(node) end def to_s to_html end private def attachment_attributes read_json_object_attribute("data-trix-attachment") end def composed_attributes read_json_object_attribute("data-trix-attributes") end def read_json_object_attribute(name) read_json_attribute(name) || {} end def read_json_attribute(name) if value = node[name] begin JSON.parse(value) rescue => e Rails.logger.error "[#{self.class.name}] Couldn't parse JSON #{value} from NODE #{node.inspect}" Rails.logger.error "[#{self.class.name}] Failed with #{e.class}: #{e.backtrace}" nil end end end end end