Module: PagesHelper

Defined in:
app/helpers/pages_helper.rb

Instance Method Summary collapse

Instance Method Details

Takes an array of pages which constitute the ancestors of the current page (page) and displays them in the requested format Options:

  • seperator: The text or character that will seperate the breadcrumbs. Defaults to “ » ”

  • format: choices are “ul” or “inline”. “ul” displays the breadcrumb links in an unordered list whilst “inline” displays them inline in a containing div. Defaults to “ul”



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# File 'app/helpers/pages_helper.rb', line 144

def breadcrumbs(options={})
  options = {
    :breadcrumbs => @breadcrumbs,
    :page => @page,
    :seperator => ' » ',
    :format => :ul
  }.with_indifferent_access.merge(options)

  case options[:format]
    when :inline
      content_tag :div, :class => :breadcrumbs do
        links = options[:breadcrumbs].collect.with_index { |breadcrumb, i| link_to_page(breadcrumb, :class => "crumb_#{i}") + options[:seperator].html_safe }.join().html_safe
        links += content_tag(:span, replace_title_for(options[:page]), :class => 'current_page') if options[:page]
      end
      
    when :ul
      content_tag :ul, :class => :breadcrumbs do
        links = options[:breadcrumbs].collect.with_index { |breadcrumb, i| content_tag(:li, link_to_page(breadcrumb, :class => "crumb_#{i}")) }.join().html_safe
        links += content_tag(:li, replace_title_for(options[:page]), :class => 'current_page') if options[:page]
      end
      
    else
      'Please choose one of :inline or :ul as a format'
  end
end

#link_to_add_fields(name, f, association) ⇒ Object

Add extra fields for an object in a form, in this case page parts



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# File 'app/helpers/pages_helper.rb', line 89

def link_to_add_fields(name, f, association)
  new_object = f.object.class.reflect_on_association(association).klass.new
  fields = simple_fields_for(association, new_object, :child_index => "new_#{association}") do |builder|
    safe_concat(render(association.to_s.singularize + "_fields", :f => builder))
  end
  
  link_to('Add', '#', :onclick => "add_fields(this, \"#{association}\", \"#{escape_javascript(fields)}\")", :class => 'icon add')
end

#link_to_page(page, options = {}) ⇒ Object 



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# File 'app/helpers/pages_helper.rb', line 127

def link_to_page(page, options={})
  # Arbitrarily chosen url to take precedence over controller and action
  if page.url.blank?
    if page.controller.blank? && page.action.blank?
      link_to replace_title_for(page), "/#{page.permalink}", options
    else
      link_to replace_title_for(page), url_for(:controller => '/' + page.controller, :action => page.action), options
    end
  else
    link_to replace_title_for(page), page.url, options
  end
end

#navigation(options = {}) ⇒ Object

Options:

  • root: The root of the navigation structure

  • current: The current_page if not @page

  • depth: The number of levels in the tree to traverse. Defaults to 2

  • class: The class of the containing ul. Defaults to “”

  • id: The id of the containing id. Defaults to “”

  • link_current: Set to true if the current page should have a link. Defaults to false



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# File 'app/helpers/pages_helper.rb', line 177

def navigation(options={})
  options = {
    :root => nil,
    :current => @page,
    :class => 'nav', 
    :id => '',
    :include_root => false,
    :link_current => false,
    :depth => 2
  }.with_indifferent_access.merge(options)

  current_user = nil unless defined?(current_user)
  
  if options[:root].is_a?(NilClass)
    root_page = Page.published_or_hidden.viewable_by(current_user).root_only.first
  elsif options[:root].is_a?(Page)
    root_page = options[:root]
  elsif options[:root].is_a?(String)
    root_page = Page.published_or_hidden.viewable_by(current_user).where('pages.url = :root or pages.permalink = :root', :root => options[:root]).first
  elsif options[:root].is_a?(Hash)
    options[:root].stringify_keys!
    root_page = Page.published_or_hidden.viewable_by(current_user).where(:controller => options[:root][:controller], :action => options[:root][:action]).first
  else
    return "<p><em>Error:</em> Root must be a page, a permalink, a url or a hash containing the controller and action, got: #{root.class.to_s}.</p>".html_safe
  end
  
  return "<p><em>Error:</em> Root page not found: #{options[:root]}</p>".html_safe unless root_page

  grouped_pages = root_page.self_and_descendants.viewable_by(current_user).shown_in_menu.published.for_nav.group_by(&:parent_id)

  render 'pages/navigation', :options => options, :root_page => root_page, :grouped_pages => grouped_pages, :level => 1
end

#page_content(options = {}) ⇒ Object

Return the specified page part content



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# File 'app/helpers/pages_helper.rb', line 99

def page_content(options={})
  options = {
    :page => @page,
    :part => 'body'
  }.with_indifferent_access.merge(options)
  
  options[:page].page_parts.detect { |p| p.title == options[:part].to_s } if options[:page]
end

#page_css(options = {}) ⇒ Object 



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# File 'app/helpers/pages_helper.rb', line 28

def page_css(options={})
  options = {
    :with_tags => true
  }.with_indifferent_access.merge(options)

  if options[:with_tags]
    if @page && !@page.css.blank?
      content_tag :style do
        @page.css
      end
    end
  else
    @page.css
  end
end

#page_js(options = {}) ⇒ Object 



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# File 'app/helpers/pages_helper.rb', line 12

def page_js(options={})
  options = {
    :with_tags => true
  }.with_indifferent_access.merge(options)
  
  if options[:with_tags]
    if @page && !@page.js.blank?
      javascript_tag do 
        @page.js
      end
    end
  else
    @page.js
  end
end

#page_meta_description ⇒ Object 



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# File 'app/helpers/pages_helper.rb', line 52

def page_meta_description
  if @page && !@page.meta_description.blank?
    content_tag :meta, :name => 'description' do 
      @page.meta_description
    end
  end
end

#page_meta_keywords ⇒ Object 



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# File 'app/helpers/pages_helper.rb', line 44

def page_meta_keywords
  if @page && !@page.meta_keywords.blank?
    content_tag :meta, :name => 'keywords' do 
      @page.meta_keywords
    end
  end
end

#page_snippet(name, options = {}) ⇒ Object 



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# File 'app/helpers/pages_helper.rb', line 108

def page_snippet(name, options={})
  options = {
    :default_text => 'Page snippet not found',
    :tag => nil,
    :class => ['page_snippet'],
    :id => nil
  }.with_indifferent_access.merge(options)

  page_snippet = PageSnippet.find_by_name(name.to_s)
  
  if options[:tag]
    content_tag options[:tag], :class => options[:class], :id => options[:id] do 
      page_snippet ? page_snippet : options[:default_text]
    end
  else
    page_snippet ? page_snippet : options[:default_text]
  end
end

#page_title(default_text) ⇒ Object

Set the page title



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# File 'app/helpers/pages_helper.rb', line 4

def page_title(default_text)
  if @page
    replace_title_for(@page)
  else
    default_text
  end
end

#replace_title_for(page) ⇒ Object

Usage: You can use the attributes of any instance variables and insert them in the title For example:

This is a page for {{my_object:my_object_attribute}}

Requires that any object that will be used have a public whitelist method which returns an array of legal attributes (as this can be set by a user certain attributes should not be exposed)



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# File 'app/helpers/pages_helper.rb', line 66

def replace_title_for(page)
  return nil unless page
  page.title.scan(/\{\{(\w+):(\w+)\}\}/).uniq.flatten.in_groups_of(2).each do |klass, attribute|
    if self.instance_variable_defined? "@#{klass}"
      obj = self.instance_variable_get "@#{klass}"
      if obj.class.public_methods.include?(:whitelist) && obj.class.whitelist.is_a?(Array)
        if obj.class.whitelist.include?(attribute)
          page.title.gsub!("{{#{klass}:#{attribute}}}", obj.send(attribute).to_s)  
        else
          page.title.gsub!("{{#{klass}:#{attribute}}}", "'#{attribute}' not in whitelist for #{obj.class}")
        end 
      else
        page.title.gsub!("{{#{klass}:#{attribute}}}", "Whitelist not defined for #{obj.class}")
      end   
    else
      page.title.gsub!("{{#{klass}:#{attribute}}}", "Not found")     
    end 
  end
  
  page.title
end