Class: ActionText::Content

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Instance Chain: self, `Rendering`, `Serialization`, ContentHelper
Inherits:	Object
Defined in:	actiontext/lib/action_text/content.rb

Overview

The 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 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!"

`Rendering` - Attributes & Methods

#render readonly

Class Method Summary

.fragment_by_canonicalizing_content(content)
.new(content = nil, options = {}) ⇒ Content constructor

Instance Attribute Summary

#deconstruct readonly
#fragment readonly
#html_safe readonly

Instance Method Summary

#==(other)
#append_attachables(attachables)
#as_json
#attachables

Extracts Attachables from the HTML fragment:
#attachment_galleries
#attachments

Extracts Attachments from the HTML fragment:
#blank? ⇒ Boolean
#empty? ⇒ Boolean
#gallery_attachments
#inspect
#links

Extracts links from the HTML fragment:
#present? ⇒ Boolean
#render_attachment_galleries(&block)
#render_attachments(**options, &block)
#to_html
#to_partial_path
#to_plain_text

Returns a plain-text version of the markup contained by the content, with tags removed but HTML entities encoded.
#to_rendered_html_with_layout
#to_s

Safely transforms Content into an HTML String.
#to_trix_html
#attachment_for_node(node, with_full_attributes: true) private
#attachment_gallery_for_node(node) private
#attachment_gallery_nodes private
#attachment_nodes private

`Serialization` - Included

#_dump

Constructor Details

.new(content = nil, options = {}) ⇒ `Content`

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 40


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

Class Method Details

.fragment_by_canonicalizing_content(content)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 33


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 Attribute Details

#deconstruct (readonly)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 29


delegate :deconstruct, to: :fragment

#fragment (readonly)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 27


attr_reader :fragment

#html_safe (readonly)

[ GitHub ]

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


delegate :blank?, :empty?, :html_safe, :present?, to: :to_html # Delegating to to_html to avoid including the layout

#render (readonly)

[ GitHub ]

# File 'actiontext/lib/action_text/rendering.rb', line 14


delegate :render, to: :class

Instance Method Details

#==(other)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 169


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)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 93


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

#as_json

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 161


def as_json(*)
  to_html
end

#attachables

Extracts 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]

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 87


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

#attachment_for_node(node, with_full_attributes: true) (private)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 186


def attachment_for_node(node, with_full_attributes: true)
  attachment = ActionText::Attachment.from_node(node)
  with_full_attributes ? attachment.with_full_attributes : attachment
end

#attachment_galleries

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 71


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

#attachment_gallery_for_node(node) (private)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 191


def attachment_gallery_for_node(node)
  ActionText::AttachmentGallery.from_node(node)
end

#attachment_gallery_nodes (private)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 182


def attachment_gallery_nodes
  @attachment_gallery_nodes ||= ActionText::AttachmentGallery.find_attachment_gallery_nodes(fragment)
end

#attachment_nodes (private)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 178


def attachment_nodes
  @attachment_nodes ||= fragment.find_all(ActionText::Attachment.tag_name)
end

#attachments

Extracts 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...

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 65


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

#blank? ⇒ `Boolean`

[ GitHub ]

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


delegate :blank?, :empty?, :html_safe, :present?, to: :to_html # Delegating to to_html to avoid including the layout

#empty? ⇒ `Boolean`

[ GitHub ]

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


delegate :blank?, :empty?, :html_safe, :present?, to: :to_html # Delegating to to_html to avoid including the layout

#gallery_attachments

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 77


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

#inspect

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 165


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

#links

Extracts links from the HTML fragment:

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

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 55


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

#present? ⇒ `Boolean`

[ GitHub ]

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


delegate :blank?, :empty?, :html_safe, :present?, to: :to_html # Delegating to to_html to avoid including the layout

#render_attachment_galleries(&block)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 109


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)

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 98


def render_attachments(**options, &block)
  content = fragment.replace(ActionText::Attachment.tag_name) do |node|
    if node.key?("content")
      sanitized_content = sanitize_content_attachment(node.remove_attribute("content").to_s)
      node["content"] = sanitized_content if sanitized_content.present?
    end
    block.call(attachment_for_node(node, **options))
  end
  self.class.new(content, canonicalize: false)
end

#to_html

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 138


def to_html
  fragment.to_html
end

#to_partial_path

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 146


def to_partial_path
  "action_text/contents/content"
end

#to_plain_text

Returns a plain-text version of the markup contained by the content, with tags removed but HTML entities encoded.

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

content = ActionText::Content.new("<div onclick='action()'>safe<script>unsafe</script></div>")
content.to_plain_text # => "safeunsafe"

NOTE: that the returned string is not HTML safe and should not be rendered in browsers.

content = ActionText::Content.new("&lt;script&gt;alert()&lt;/script&gt;")
content.to_plain_text # => "<script>alert()</script>"

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 130


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

#to_rendered_html_with_layout

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 142


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

#to_s

Safely transforms Content into an HTML String.

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

content = ActionText::Content.new("<div onclick='action()'>safe<script>unsafe</script></div>")
content.to_s # => "<div>safeunsafe</div>"

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 157


def to_s
  to_rendered_html_with_layout
end

#to_trix_html

[ GitHub ]

# File 'actiontext/lib/action_text/content.rb', line 134


def to_trix_html
  render_attachments(&:to_trix_attachment).to_html
end

Class: ActionText::Content

Overview

Rendering - Attributes & Methods

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Serialization - Included

Constructor Details

.new(content = nil, options = {}) ⇒ Content

Class Method Details

.fragment_by_canonicalizing_content(content)

Instance Attribute Details

#deconstruct (readonly)

#fragment (readonly)

#html_safe (readonly)

#render (readonly)

Instance Method Details

#==(other)

#append_attachables(attachables)

#as_json

#attachables

#attachment_for_node(node, with_full_attributes: true) (private)

#attachment_galleries

#attachment_gallery_for_node(node) (private)

#attachment_gallery_nodes (private)

#attachment_nodes (private)

#attachments

#blank? ⇒ Boolean

#empty? ⇒ Boolean

#gallery_attachments

#inspect

#links

#present? ⇒ Boolean

#render_attachment_galleries(&block)

#render_attachments(**options, &block)

#to_html

#to_partial_path

#to_plain_text

#to_rendered_html_with_layout

#to_s

#to_trix_html

`Rendering` - Attributes & Methods

`Serialization` - Included

.new(content = nil, options = {}) ⇒ `Content`

#blank? ⇒ `Boolean`

#empty? ⇒ `Boolean`

#present? ⇒ `Boolean`