NoMethodError on a form create method - ruby-on-rails

Question

I am getting a weird error after adding <%= f.input :schedule, as: :datetime, input_html: {id: 'schedule'} %> inorder to add a datetime selector.
I am wondering, what could the problem be?
NoMethodError in Messages#new
and
undefined method ``schedule' for #<Message:0x000000066fa1e8>
my create controller is
def create
#lists = current_user.lists.all
#message = Message.new(params[:message])
lists = params[:message][:lists]
schedule = params[:message][:schedule]
if #message.save
if schedule == [""]
MessageWorker.perform_async(#message.id, lists, current_user.id)
else
Schedule.create(execution_time: schedule, lists: lists, message_id: #message_id, user_id: current_user.id)
end
else
render action: "new"
flash[:notice] = "Messages Not Sent"
end
end
and the view is;
<%= simple_form_for(#message, :html => {:multipart => true}) do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
<%= f.input :from, placeholder: "Max 11 characters" , input_html: {id: 'sms_from'} %>
<%= f.input :to, :input_html => {:value => params[:to], :class => "to"}, placeholder: "Separate Numbers with Comma", hint: "Include atleast one number in this section. Separate the numbers with commas." %>
<div id="add_lists"> <span class="button"> Add List </span></div>
<div id="all_lists"> <%= f.collection_check_boxes :lists, #lists, :id, :name, as: :select %></div>
<%= f.input :message, :as => :text, :input_html => {:cols => 60, :rows => 7, id: "compose_message", placeholder: 'Type your message here!'} %>
<div>
<p>
<span id="char_count">160 characters left</span>
<span id="number_of_messages">1 message(s)</span>
</p>
</div>
<%= f.input :schedule, as: :datetime, input_html: {id: 'schedule'} %>
<%= f.input :user_id, :as => :hidden, :input_html => {:value => #current_user.id} %>
<%= f.input :status, :as => :hidden, :input_html => {:value => "Queued"} %>
<%= f.button :submit, "Send Message" %>
<% end %>
and the model top looks like this;
class Message < ActiveRecord::Base
attr_accessible :message, :phone, :status, :to, :from, :user_id, :schedule
validates :message, :presence => true
validates :from, :presence => true
validates :to, :presence => true
validates :status, :presence => true
validates_length_of :message, :maximum => 1600, :allow_blank => true
validates_length_of :from, :maximum => 11, :allow_blank => false
belongs_to :user
Everything was working well until i added;
<%= f.input :schedule, as: :datetime, input_html: {id: 'schedule'} %>

Answer 1

Did you migrate the database to add the schedule column?
Or if you are not storing :schedule in the database, then you need to add:
attr_accessor :schedule
to your Message model.

Answer 2

You don't have to use f.input, you can use f.date_field of f.datetime_field as outlined in the API: http://api.rubyonrails.org/classes/ActionView/Helpers/FormHelper.html#method-i-date_field
Also, you don't have to use the form helper in this way as you can use datetimefield_tag instead of f.datetime_field as outlined here http://rubydoc.info/docs/rails/ActionView/Helpers/FormTagHelper:datetime_field_tag