gitlab-org--gitlab-foss/app/models/wiki_page.rb

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class WikiPage
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PageChangedError = Class.new(StandardError)
include ActiveModel::Validations
include ActiveModel::Conversion
include StaticModel
extend ActiveModel::Naming
def self.primary_key
'slug'
end
def self.model_name
ActiveModel::Name.new(self, nil, 'wiki')
end
# Sorts and groups pages by directory.
#
# pages - an array of WikiPage objects.
#
# Returns an array of WikiPage and WikiDirectory objects. The entries are
# sorted by alphabetical order (directories and pages inside each directory).
# Pages at the root level come before everything.
def self.group_by_directory(pages)
return [] if pages.blank?
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pages.sort_by { |page| [page.directory, page.slug] }
.group_by(&:directory)
.map do |dir, pages|
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if dir.present?
WikiDirectory.new(dir, pages)
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else
pages
end
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end
.flatten
end
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def self.unhyphenize(name)
name.gsub(/-+/, ' ')
end
def to_key
[:slug]
end
validates :title, presence: true
validates :content, presence: true
# The Gitlab ProjectWiki instance.
attr_reader :wiki
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# The raw Gitlab::Git::WikiPage instance.
attr_reader :page
# The attributes Hash used for storing and validating
# new Page values before writing to the Gollum repository.
attr_accessor :attributes
def hook_attrs
attributes
end
def initialize(wiki, page = nil, persisted = false)
@wiki = wiki
@page = page
@persisted = persisted
@attributes = {}.with_indifferent_access
set_attributes if persisted?
end
# The escaped URL path of this page.
def slug
if @attributes[:slug].present?
@attributes[:slug]
else
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wiki.wiki.preview_slug(title, format)
end
end
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alias_method :to_param, :slug
# The formatted title of this page.
def title
if @attributes[:title]
CGI.unescape_html(self.class.unhyphenize(@attributes[:title]))
else
""
end
end
# Sets the title of this page.
def title=(new_title)
@attributes[:title] = new_title
end
# The raw content of this page.
def content
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@attributes[:content] ||= @page&.text_data
end
# The hierarchy of the directory this page is contained in.
def directory
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wiki.page_title_and_dir(slug).last
end
# The processed/formatted content of this page.
def formatted_content
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@attributes[:formatted_content] ||= @page&.formatted_data
end
# The markup format for the page.
def format
@attributes[:format] || :markdown
end
# The commit message for this page version.
def message
version.try(:message)
end
# The Gitlab Commit instance for this page.
def version
return nil unless persisted?
@version ||= @page.version
end
# Returns an array of Gitlab Commit instances.
def versions
return [] unless persisted?
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wiki.wiki.page_versions(@page.path)
end
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def commit
versions.first
end
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def last_commit_sha
commit&.sha
end
# Returns the Date that this latest version was
# created on.
def created_at
@page.version.date
end
# Returns boolean True or False if this instance
# is an old version of the page.
def historical?
@page.historical? && versions.first.sha != version.sha
end
# Returns boolean True or False if this instance
# is the latest commit version of the page.
def latest?
!historical?
end
# Returns boolean True or False if this instance
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# has been fully created on disk or not.
def persisted?
@persisted == true
end
# Creates a new Wiki Page.
#
# attr - Hash of attributes to set on the new page.
# :title - The title for the new page.
# :content - The raw markup content.
# :format - Optional symbol representing the
# content format. Can be any type
# listed in the ProjectWiki::MARKUPS
# Hash.
# :message - Optional commit message to set on
# the new page.
#
# Returns the String SHA1 of the newly created page
# or False if the save was unsuccessful.
def create(attrs = {})
@attributes.merge!(attrs)
save(page_details: title) do
wiki.create_page(title, content, format, message)
end
end
# Updates an existing Wiki Page, creating a new version.
#
# attrs - Hash of attributes to be updated on the page.
# :content - The raw markup content to replace the existing.
# :format - Optional symbol representing the content format.
# See ProjectWiki::MARKUPS Hash for available formats.
# :message - Optional commit message to set on the new version.
# :last_commit_sha - Optional last commit sha to validate the page unchanged.
# :title - The Title to replace existing title
#
# Returns the String SHA1 of the newly created page
# or False if the save was unsuccessful.
def update(attrs = {})
last_commit_sha = attrs.delete(:last_commit_sha)
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if last_commit_sha && last_commit_sha != self.last_commit_sha
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raise PageChangedError.new("You are attempting to update a page that has changed since you started editing it.")
end
attrs.slice!(:content, :format, :message, :title)
@attributes.merge!(attrs)
page_details =
if title.present? && @page.title != title
title
else
@page.url_path
end
save(page_details: page_details) do
wiki.update_page(
@page,
content: content,
format: format,
message: attrs[:message],
title: title
)
end
end
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# Destroys the Wiki Page.
#
# Returns boolean True or False.
def delete
if wiki.delete_page(@page)
true
else
false
end
end
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# Relative path to the partial to be used when rendering collections
# of this object.
def to_partial_path
'projects/wikis/wiki_page'
end
def id
page.version.to_s
end
private
def set_attributes
attributes[:slug] = @page.url_path
attributes[:title] = @page.title
attributes[:format] = @page.format
end
def save(page_details:)
return unless valid?
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unless yield
errors.add(:base, wiki.error_message)
return false
end
page_title, page_dir = wiki.page_title_and_dir(page_details)
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gitlab_git_wiki = wiki.wiki
@page = gitlab_git_wiki.page(title: page_title, dir: page_dir)
set_attributes
@persisted = errors.blank?
end
end