ensl.org/app/helpers/application_helper.rb

module ApplicationHelper
  def namelink model, length = nil
    return if model.nil?
    model = case model.class.to_s
            when "DataFile"
              model.movie ? model.movie : model
            when "Comment"
              model.commentable
            when "Post"
              model.topic
            else
              model
            end
    str = model.to_s
    if length and str.length > length
      link_to raw(str.to_s[0, length] + "..."), model
    else
      link_to raw(str), model
    end
  end

  def shorten str, length
    if length and str and str.to_s.length > length
      str = str.to_s[0, length] + "..."
    end
    str
  end

  def longtime time
    printtime time, "%d %B %y %H:%M"
  end

  def shorttime time
    printtime time, "%d/%b/%y %H:%M"
  end

  def shortdate time
    printtime time, "%d %b %y"
  end

  def longdate time
    printtime time, "%d %B %Y"
  end

  def printtime time, format
    return unless time
    out = ""
    out << '<span style="font-style: italic; ">'
    out <<  time.strftime(format)
    out << '</span>'
    raw out
  end

  def cascade model, list
    out = ""

    list.each do |element|
      name = key = element
      result = ""

      if element.instance_of?(Array)
        name = element[0]
        key = element[1]
      end

      if m = key.to_s.match(/^(.*)_b$/)
        name = m[1]
        key = m[1]
      end

      str = eval("model.#{key}")
        next if str == "" or str.nil?

      if model[key].instance_of?(Time)
        result << shorttime(str)
      elsif element.instance_of?(Symbol)
        result << namelink(str)
      elsif key.to_s.match(/^(.*)_b$/)
        result << str.bbcode_to_html
      else
        result << h(str)
      end

      out << "<p>"
      out << "<b>#{name.to_s.capitalize.gsub(/_s/, '').gsub(/_/, ' ')}</b>: "
      out << result
      out << "</p>"
    end
    raw out
  end

  def abslink text, url
    raw link_to text, url
  end

  def flag country
    if country and country.to_s.length > 0
      image_tag "/images/flags/" + country.downcase + ".gif", :width => 18, :height => 12
    else
      image_tag "/images/flags/eu.gif"
    end
  end

  def add_comments object
    @comment = Comment.new :commentable => object
    @comments = object.comments.ordered.with_userteam
    return_here
    render :partial => "comments/index"
  end

  def bbcode
    link_to "(BBCode)", article_url(:id => 536)
  end

  def sortable(column, title = nil)
    title ||= column.titleize
    css_class = (column == sort_column) ? "current #{sort_direction}" : nil
    direction = (column == sort_column && sort_direction == "asc") ? "desc" : "asc"
    link_to title, {:sort => column, :direction => direction}, {:class => css_class}
  end

  def link_to_remove_fields(name, f)
    f.hidden_field(:_destroy) + link_to_function(name, "remove_fields(this)")
  end

  def link_to_add_fields(name, f, association)
    new_object = f.object.class.reflect_on_association(association).klass.new
    fields = f.fields_for(association, new_object, :child_index => "new_#{association}") do |builder|
      render(association.to_s.singularize, :f => builder)
    end
    link_to_function(name, ("add_fields(this, '#{association}', '#{escape_javascript(fields)}')"))
  end
end