really lazy and dont want to create mess in VIEW, so i used splat to passing dynamic parameters

_form.html.erb

<%= simple_form_for @job, html: { class: "form-horizontal" } do |f| %>
  <% new_and_edit_form_fields.each do |column| %>
    <%= f.input *column %>
  <% end %>
<% end %>

job.rb

class Job < ActiveRecord::Base
  belongs_to :user
  def self.public_attributes
    column_names.map(&:to_sym).reject{ |x| [:id, :updated_at, :created_at, :user_id].include?(x) }
  end
  attr_accessible *public_attributes
end

jobs_helper.rb

module JobsHelper
  def new_and_edit_form_fields
    Job.public_attributes.keep_if{ |x| ![:user_id, :status, :published].include?(x) }.map do |jp|
      send("#{jp.to_s}_helper") rescue jp
    end
  end
  def subject_helper
    [:subject, {wrapper_html: { class: "form-holder" }, input_html: { cols: 5, rows: 3} }]
  end
  def grade_helper
    [:grade, { collection: ["elemantry"],  wrapper_html: { class: "form-holder" }}]
  end
  def covered_teacher_contact_information_helper
    [:covered_teacher_contact_information, {  wraper_html: { class: "form-holder" }}]
  end
end

ye thanks @muaazrafi its seems enhanced version, ill try.

Good Work..
Nice innovation would give it a try..
Thanks for sharing Experience..

pretty handy, good job.