Module: Rostra::Base::ApplicationHelper

Included in:
ApplicationHelper
Defined in:
app/helpers/rostra/base/application_helper.rb

Instance Method Summary collapse

Instance Method Details

#class_name(resource) ⇒ Object

Returns a rostra object’s base class name. For example, @question is an instance of Rostra::Question and so:

class_name(@question)  # => 'question'



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# File 'app/helpers/rostra/base/application_helper.rb', line 123

def class_name(resource)
  resource.class.name.split('::').last.downcase
end

#current_rostra_page?(controller_and_action) ⇒ Boolean

Checks for the current page using rails 3 route-style syntax:

current_rostra_page?('questions#new')

Returns:

  • (Boolean) 


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# File 'app/helpers/rostra/base/application_helper.rb', line 131

def current_rostra_page?(controller_and_action)
  controller_and_action == "#{controller_name}##{action_name}"
end

#facebook_sharing_link(question) ⇒ Object

Snippet used to share a question on Facebook.



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# File 'app/helpers/rostra/base/application_helper.rb', line 16

def facebook_sharing_link(question)
  raw %{
    <div class="fb-like" data-href="#{question_url(question)}" data-send="true" data-layout="button_count" data-width="450" data-show-faces="true" data-font="arial"></div>
  }
end

#include_facebook_sharing_link_javascript ⇒ Object

Javascript snippet required by facebook to support share links.



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# File 'app/helpers/rostra/base/application_helper.rb', line 24

def include_facebook_sharing_link_javascript
  raw %{
    <div id="fb-root"></div>
    <script>(function(d, s, id) {
      var js, fjs = d.getElementsByTagName(s)[0];
      if (d.getElementById(id)) return;
      js = d.createElement(s); js.id = id;
      js.src = "//connect.facebook.net/en_US/all.js#xfbml=1";
      fjs.parentNode.insertBefore(js, fjs);
    }(document, 'script', 'facebook-jssdk'));</script>
  }
end

#include_meta_description ⇒ Object

Used to add meta description tags to rostra pages



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# File 'app/helpers/rostra/base/application_helper.rb', line 46

def include_meta_description
  description = case "#{controller_name}##{action_name}"
  when "questions#show" then @question.title
  when "questions#index" then "Recently asked questions"
  end
  tag(:meta, { :name => "description", :content => description })
end

#include_meta_keywords ⇒ Object

Used to add meta keyword tags to rostra pages



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# File 'app/helpers/rostra/base/application_helper.rb', line 56

def include_meta_keywords
  keywords = case "#{controller_name}##{action_name}"
  when "questions#show" then @question.tag_list.join(', ')
  when "questions#index" then "add, some, default, keywords"
  end
  tag(:meta, { :name => "keywords", :content => keywords })
end

#link_to_profile(user) ⇒ Object

Method used to render to user names (e.g. where it says: “John Does says:”). You can, for example, use this method to turn “John Doe” into a link to his profile page.



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# File 'app/helpers/rostra/base/application_helper.rb', line 40

def link_to_profile(user)
  link_to user.rostra_user_name, main_app.user_url(user)
end

#link_to_vote(direction, resource) ⇒ Object

Method to build links for ajax-y voting arrows.



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# File 'app/helpers/rostra/base/application_helper.rb', line 108

def link_to_vote(direction, resource)
  if can_participate_in_rostra? && ( (direction == :up && rostra_user.voted_for?(resource)) || (direction == :down && rostra_user.voted_against?(resource)) )
    selected = 'selected'
  else
    selected = ''
  end
  entity_arrow = direction == :up ? '&#x25B2;' : '&#x25BC;'
  link_to entity_arrow.html_safe, vote_path(resource, direction), method: :put, remote: true, title: "vote #{direction}", class: "vote #{direction} #{selected}"
end

#page_title_helper ⇒ Object

Used to populate both the title and h1 elements for each page.



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# File 'app/helpers/rostra/base/application_helper.rb', line 66

def page_title_helper
  case "#{controller_name}##{action_name}"
  when "questions#show" then @question.title
  when "questions#index" then
    if params[:tag_search].present?
      "Recent Questions for tag #{params[:tag_search]}"
    else
      "Recent Questions"
    end
  when "questions#new" then "Post a new question"
  when "questions#edit" then "Editing question"
  when "answers#edit" then "Editing answer"
  else "Recent Questions"
  end
end

#rostra_user_avatar(user) ⇒ Object

Finds the url to the user’s avatar following this logic:

1. Calls +avatar+ on the user object
2. Uses the users email address to look for a gravatar
3. Renders +app/assets/images/rostra/anonymous_avatar.png+



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# File 'app/helpers/rostra/base/application_helper.rb', line 95

def rostra_user_avatar(user)
  if user.respond_to?(:avatar)
    url = user.avatar
  else
    default_url = "#{main_app.root_url}assets/rostra/anonymous_avatar.png"
    gravatar_id = Digest::MD5.hexdigest(user.rostra_user_email.downcase)
    url = "http://gravatar.com/avatar/#{gravatar_id}.png?s=48&d=#{CGI.escape(default_url)}"
  end
  image_tag(url, class: 'avatar')
end

#tag_list(question) ⇒ Object

Creates a list of tags linking to the index showing only questions with that tag



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# File 'app/helpers/rostra/base/application_helper.rb', line 84

def tag_list(question)
  tags = question.tags.map { |tag| link_to tag, questions_path(:tag_search => "#{tag}")}.join(', ')
  content_tag :div, "Tags: #{tags}".html_safe, class: 'tags'
end

#twitter_sharing_link ⇒ Object

Snippet used to share a question on Twitter.



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# File 'app/helpers/rostra/base/application_helper.rb', line 7

def twitter_sharing_link
  raw %{
    <a href="https://twitter.com/share" class="twitter-share-button" data-count="none">Tweet</a>
    <script type="text/javascript" src="//platform.twitter.com/widgets.js"></script>
  }
end