Class: ActionText::Content

Inherits:
Object
  • Object
show all
Includes:
Rendering, Serialization
Defined in:
lib/action_text/content.rb

Overview

Action Text Content

The ActionText::Content class wraps an HTML fragment to add support for parsing, rendering and serialization. It can be used to extract links and attachments, convert the fragment to plain text, or serialize the fragment to the database.

The ActionText::RichText record serializes the ‘body` attribute as ActionText::Content.

class Message < ActiveRecord::Base
  has_rich_text :content
end

message = Message.create!(content: "<h1>Funny times!</h1>")
body = message.content.body # => #<ActionText::Content "<div class=\"trix-conte...">
body.to_s # => "<h1>Funny times!</h1>"
body.to_plain_text # => "Funny times!"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Serialization

#_dump

Constructor Details

#initialize(content = nil, options = {}) ⇒ Content

Returns a new instance of Content.



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# File 'lib/action_text/content.rb', line 37

def initialize(content = nil, options = {})
  options.with_defaults! canonicalize: true

  if options[:canonicalize]
    @fragment = self.class.fragment_by_canonicalizing_content(content)
  else
    @fragment = ActionText::Fragment.wrap(content)
  end
end

Instance Attribute Details

#fragment ⇒ Object (readonly)

Returns the value of attribute fragment.



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# File 'lib/action_text/content.rb', line 25

def fragment
  @fragment
end

Class Method Details

.fragment_by_canonicalizing_content(content) ⇒ Object 



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# File 'lib/action_text/content.rb', line 30

def fragment_by_canonicalizing_content(content)
  fragment = ActionText::Attachment.fragment_by_canonicalizing_attachments(content)
  fragment = ActionText::AttachmentGallery.fragment_by_canonicalizing_attachment_galleries(fragment)
  fragment
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/action_text/content.rb', line 145

def ==(other)
  if self.class == other.class
    to_html == other.to_html
  elsif other.is_a?(self.class)
    to_s == other.to_s
  end
end

#append_attachables(attachables) ⇒ Object 



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# File 'lib/action_text/content.rb', line 90

def append_attachables(attachables)
  attachments = ActionText::Attachment.from_attachables(attachables)
  self.class.new([self.to_s.presence, *attachments].compact.join("\n"))
end

#as_json ⇒ Object 



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# File 'lib/action_text/content.rb', line 137

def as_json(*)
  to_html
end

#attachables ⇒ Object

Extracts ActionText::Attachables from the HTML fragment:

attachable = ActiveStorage::Blob.first
html = %Q(<action-text-attachment sgid="#{attachable.attachable_sgid}" caption="Captioned"></action-text-attachment>)
content = ActionText::Content.new(html)
content.attachables # => [attachable]



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# File 'lib/action_text/content.rb', line 84

def attachables
  @attachables ||= attachment_nodes.map do |node|
    ActionText::Attachable.from_node(node)
  end
end

#attachment_galleries ⇒ Object 



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# File 'lib/action_text/content.rb', line 68

def attachment_galleries
  @attachment_galleries ||= attachment_gallery_nodes.map do |node|
    attachment_gallery_for_node(node)
  end
end

#attachments ⇒ Object

Extracts ActionText::Attachments from the HTML fragment:

attachable = ActiveStorage::Blob.first
html = %Q(<action-text-attachment sgid="#{attachable.attachable_sgid}" caption="Captioned"></action-text-attachment>)
content = ActionText::Content.new(html)
content.attachments # => [#<ActionText::Attachment attachable=#<ActiveStorage::Blob...



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# File 'lib/action_text/content.rb', line 62

def attachments
  @attachments ||= attachment_nodes.map do |node|
    attachment_for_node(node)
  end
end

#gallery_attachments ⇒ Object 



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# File 'lib/action_text/content.rb', line 74

def gallery_attachments
  @gallery_attachments ||= attachment_galleries.flat_map(&:attachments)
end

#inspect ⇒ Object 



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# File 'lib/action_text/content.rb', line 141

def inspect
  "#<#{self.class.name} #{to_html.truncate(25).inspect}>"
end

#links ⇒ Object

Extracts links from the HTML fragment:

html = '<a href="http://example.com/">Example</a>'
content = ActionText::Content.new(html)
content.links # => ["http://example.com/"]



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# File 'lib/action_text/content.rb', line 52

def links
  @links ||= fragment.find_all("a[href]").map { |a| a["href"] }.uniq
end

#render_attachment_galleries(&block) ⇒ Object 



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# File 'lib/action_text/content.rb', line 102

def render_attachment_galleries(&block)
  content = ActionText::AttachmentGallery.fragment_by_replacing_attachment_gallery_nodes(fragment) do |node|
    block.call(attachment_gallery_for_node(node))
  end
  self.class.new(content, canonicalize: false)
end

#render_attachments(**options, &block) ⇒ Object 



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# File 'lib/action_text/content.rb', line 95

def render_attachments(**options, &block)
  content = fragment.replace(ActionText::Attachment.tag_name) do |node|
    block.call(attachment_for_node(node, **options))
  end
  self.class.new(content, canonicalize: false)
end

#to_html ⇒ Object 



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# File 'lib/action_text/content.rb', line 121

def to_html
  fragment.to_html
end

#to_partial_path ⇒ Object 



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# File 'lib/action_text/content.rb', line 129

def to_partial_path
  "action_text/contents/content"
end

#to_plain_text ⇒ Object

Returns the content as plain text with all HTML tags removed.

content = ActionText::Content.new("<h1>Funny times!</h1>")
content.to_plain_text # => "Funny times!"



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# File 'lib/action_text/content.rb', line 113

def to_plain_text
  render_attachments(with_full_attributes: false, &:to_plain_text).fragment.to_plain_text
end

#to_rendered_html_with_layout ⇒ Object 



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# File 'lib/action_text/content.rb', line 125

def to_rendered_html_with_layout
  render layout: "action_text/contents/content", partial: to_partial_path, formats: :html, locals: { content: self }
end

#to_s ⇒ Object 



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# File 'lib/action_text/content.rb', line 133

def to_s
  to_rendered_html_with_layout
end

#to_trix_html ⇒ Object 



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# File 'lib/action_text/content.rb', line 117

def to_trix_html
  render_attachments(&:to_trix_attachment).to_html
end