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Change #id generation rule 

* Use the current heading by default
* If duplicate, then use #[parent]-[current] as the id
This commit is contained in:
Prem Sichanugrist 2012-09-16 23:12:45 -04:00
parent 5e2866cc34
commit 05b4d59a8d
1 changed files with 37 additions and 10 deletions
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47
guides/rails_guides/markdown.rb
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@ -9,6 +9,7 @@ module RailsGuides
@layout = layout
@index_counter = Hash.new(0)
@raw_header = ''
@node_ids = {}
end
def render(body)
@ -25,7 +26,27 @@ module RailsGuides
private
def dom_id(nodes)
nodes.map{ |node| node[:id] ? node[:id] : node.text.downcase.gsub(/[^a-z0-9]+/, '-') }.join('-')
dom_id = dom_id_text(nodes.last.text)
# Fix duplicate node by prefix with its parent node
if @node_ids[dom_id]
if @node_ids[dom_id].size > 1
duplicate_nodes = @node_ids.delete(dom_id)
new_node_id = "#{duplicate_nodes[-2][:id]}-#{duplicate_nodes.last[:id]}"
duplicate_nodes.last[:id] = new_node_id
@node_ids[new_node_id] = duplicate_nodes
end
dom_id = "#{nodes[-2][:id]}-#{dom_id}"
end
@node_ids[dom_id] = nodes
dom_id
end
def dom_id_text(text)
text.downcase.gsub(/\?/, '-questionmark').gsub(/!/, '-bang').gsub(/[^a-z0-9]+/, ' ')
.strip.gsub(/\s+/, '-')
end
def engine
@ -54,7 +75,7 @@ module RailsGuides
end
def generate_structure
@raw_index = ''
@headings_for_index = []
if @body.present?
@body = Nokogiri::HTML(@body).tap do |doc|
hierarchy = []
@ -64,20 +85,17 @@ module RailsGuides
case node.name
when 'h3'
hierarchy = [node]
node[:id] = dom_id(hierarchy)
@raw_index += "1. [#{node.inner_html}](##{node[:id]})\n"
@headings_for_index << [1, node, node.inner_html]
when 'h4'
hierarchy = hierarchy[0, 1] + [node]
node[:id] = dom_id(hierarchy)
@raw_index += " * [#{node.inner_html}](##{node[:id]})\n"
@headings_for_index << [2, node, node.inner_html]
when 'h5'
hierarchy = hierarchy[0, 2] + [node]
node[:id] = dom_id(hierarchy)
when 'h6'
hierarchy = hierarchy[0, 3] + [node]
node[:id] = dom_id(hierarchy)
end
node[:id] = dom_id(hierarchy)
node.inner_html = "#{node_index(hierarchy)} #{node.inner_html}"
end
end
@ -86,8 +104,17 @@ module RailsGuides
end
def generate_index
if @raw_index.present?
@index = Nokogiri::HTML(engine.render(@raw_index)).tap do |doc|
if @headings_for_index.present?
raw_index = ''
@headings_for_index.each do |level, node, label|
if level == 1
raw_index += "1. [#{label}](##{node[:id]})\n"
elsif level == 2
raw_index += " * [#{label}](##{node[:id]})\n"
end
end
@index = Nokogiri::HTML(engine.render(raw_index)).tap do |doc|
doc.at('ol')[:class] = 'chapters'
end.to_html