tap/app/helpers/application_helper.rb

require 'digest/md5'
module ApplicationHelper

  def get_color(user)
    Digest::MD5.hexdigest(user.nickname)[0..5]
  end

  def get_color_style(user)
    "background-color: \#"+ get_color(user) +";"
  end

  def euro(f)
    "€#{number_with_precision f, precision: 2}"
  end

  # Form helpers
  def form_errors(object)
    render partial: "form_errors", locals: {object: object}
  end

  def form_text_field(f, tag)
    render partial: "form_text_field", locals: {f: f, tag: tag}
  end

  def form_password_field(f, tag)
    render partial: "form_password_field", locals: {f: f, tag: tag}
  end

  def form_text_area(f, tag)
    render partial: "form_text_area", locals: {f: f, tag: tag}
  end

  def form_fancy_text_area(f, tag)
    render partial: "form_fancy_text_area", locals: {f: f, tag: tag}
  end

  def form_email_field(f, tag)
    render partial: "form_email_field", locals: {f: f, tag: tag}
  end

  def form_date_field(f, tag, id, value)
    render partial: "form_date_field", locals: {f: f, tag: tag, id: id, value: value}
  end

  def form_number_field(f, tag)
    render partial: "form_number_field", locals: {f: f, tag: tag}
  end

  def form_collection_select(f, *args)
    # This line enable passing optional arguments such as include_blank to the
    # partial. If nothing is passed, an empty options hash is appended.
    args << {} if args.length < 5

    render partial: "form_collection_select", locals: {f: f, args: args}
  end

  def form_check_box(f, tag)
    render partial: "form_check_box", locals: {f: f, tag: tag}
  end

end