rails render action with anchor - ruby-on-rails-4

Question

i have a form with simple_form gem. if i digit the url in the browser with the anchor tag it works:
localhost:3000/contacts/#new_contact #show me the correct form in the page
this is my controller:
class ContactsController < ApplicationController
def index
#message = Contact.new()
end
def create
#message = Contact.new(msg_params)
#message.request = request
if #message.deliver
redirect_to contacts_path , flash: { success: 'Ok' }
else
render action: :index #how can i render the new_contact anchor??
end
rescue ScriptError
redirect_to contacts_path , flash: { error: 'spam' }
end
private
def msg_params
params.require(:contact).permit(:name,:email,:message,:spam)
end
end
this is my form:
<%= simple_form_for #message, defaults: { label: false} do |f| %>
<%= f.input :name %>
<%= f.input :email %>
<%= f.input :message, :as => :text,input_html: { rows: 7 } %>
<div class="hidden">
<%= f.input :spam, :hint => 'Leave this field blank!' %>
</div>
<%= f.button :submit, 'Send', class: 'btn-block btn-success btn-lg' %>
<% end %>
how can i show the new_contact anchor with the render method?

Answer 1

You can't use render to modify the anchor tag. In fact, render has nothing at all to do with the URI.
You can use existing links to link to "/url#anchor", redirect there, or use javascript to achieve the same effect.
You might also need to add :id => 'anchor' if the anchor itself isn't setup on the form.