NoMethodError undefined method 'each' fir nil:NilClass - ruby-on-rails

Question

I'm facing NoMethodError in NewFormsController#create, undefined method `each' for nil:NilClass !
Here is my code :
Controller : new_forms_controller.rb
class NewFormsController < ApplicationController
def new
#form = NewForm.new
end
def create
#form = NewForm.new(params[:form])
if #form.valid?
flash[:notice] = "Successfully created recommendation."
redirect_to 'new_forms/new'
else
render :action => 'new'
end
end
end
Model : new_form.rb
class NewForm
include ActiveModel::Validations
include ActiveModel::Conversion
include ActiveModel::Naming
attr_accessor :titleID, :articleID, :content, :author
validates :titleID, :articleID, :content, :author, :presence => true
validates :titleID, :articleID => {:minimum => 5 }
def initialize(attributes = {})
attributes.each do |name, value|
send("#{name}=", value)
end
end
def persisted?
false
end
end
New View : new.html.erb
<%= content_for :title, "New Article Form" %>
<%= form_for #form do |f| %>
<% #form.errors.full_messages.each do |msg| %>
<p><%= msg %></p>
<% end %>
<p>
<%= f.label :titleID %> <br/>
<%= f.text_field :titleID %><br/>
</p>
<p>
<%= f.label :articleID %><br/>
<%= f.text_field :articleID %><br/>
</p>
<p>
<%= f.label :content %><br/>
<%= f.text_field :content %><br/>
</p>
<p>
<%= f.label :author %><br/>
<%= f.text_field :author %><br/>
</p>
<p><%= f.submit "Submit" %></p>
<% end %>
Routes : routes.rb
TestBranch::Application.routes.draw do
resources :new_forms
root :to => "new_forms#new"
end
I'm trying to implement ActiveModel because I don't want my form object to be backed up by database, I will have different service for database interactions.

Answer 1

You can do like this:
<% if #forms.errors.any? %>
<% #form.errors.full_messages.each do |msg| %>
<p><%= msg %></p>
<% end %>
<% end %>

Answer 2

Try the below code
<% if #form.errors.any? %>
<% #form.errors.full_messages.each do |msg| %>
<p><%= msg %></p>
<% end %>
<% end %>

Answer 3

it seems your model is correct and doens't include errors, so #form.errors contains []
you could check for errors
<% #form.errors.full_messages.each do |msg| %>
<p><%= msg %></p>
<% end unless #form.errors.blank? %>
update from my comments:
please try params[:new_form] instead of params[:form]. your identifier :form is wrong. your model called NewForm so your param name is new_form