Ajax form submition not working - ruby-on-rails

Question

I'm attempting to create a "Save Changes" button for a form that would send data via ajax to the update method in the controller. The aim is to allow form users to save their work without the form reloading or redirecting. However I'm running into a bit of a problem; I'm getting the following error
undefined method `update_incorporation_path'
To be clear, incorporation is the controller that we're working with. Below is the code I added to accomplish this.
To my view, I added:
<%= button_to "", update_incorporation_path(#incorporation), :remote => true, :method => :post %>
To my routes, I added:
resources :incorporations do
member do
post 'update'
end
end
The update method looks like this:
def update
if #incorporation.update(incorporation_params)
if admin_signed_in?
#incorporations = Incorporation.all.order("created_at DESC")
else
#incorporations = current_user.incorporations("created_at DESC")
end
render action: "index"
else
render 'edit'
end
end
The complete view is below:
edit.html.erb
<%= render 'form' %>
<br/>
<%= link_to "Back", root_path, class: "btn btn-default" %>
_form.html.erb (the buttons are at the bottom)
<div id="wrapper" class="active main-content">
<%= simple_form_for #incorporation do |f| %>
<!-- Sidebar -->
<!-- Sidebar -->
<div id="sidebar-wrapper">
<ul id="sidebar_menu" class="sidebar-nav">
<li class="sidebar-brand"><a id="menu-toggle" href="#">Menu<span id="main_icon" class="glyphicon glyphicon-align-justify"></span></a></li>
</ul>
<% #sections=[["basic_info", "Basic Info"],["address", "Address"],["equity", "Equity"],["officers","Officers"],["directors", "Directors"],["contractor","Contractors"],["ip","IP"],["shareholders", "Shareholders"]] %>
<ul class="sidebar-nav" id="sidebar">
<% #sections.each do |section| %>
<li><span class="sub_icon glyphicon glyphicon-link"></span><%= section[1] %></li>
<% end %>
</ul>
<div id="save">Save</div>
</div>
<div class="panel-body">
<div id="basic_info" class="form_section">
<div class="form-left"><h2>Basic Info</h2></div>
<div class="form-right">
<%= f.simple_fields_for :company do |company| %>
<div class="padded-fields">
<%= render 'basic_fields', company:company %>
</div>
<% end =%>
<div class="padded-fields">
<div class="form_subsection">
<%= f.input :trademark_search, as: :radio_buttons, label: 'Would you like us to do a trademark search and provide advice regarding any issues we identify in relation to the name you have selected?', input_html: { class: 'form-control' } %>
</div>
</div>
</div>
</div>
<%= f.simple_fields_for :company do |company| %>
<div id="address" class="form_section">
<%= render 'address_fields' , company:company %>
</div>
<div id="equity" class="form_section">
<%= render 'equity_fields' , company:company %>
</div>
<div id="officers" class="form_section">
<div class="form-left"><h2>Officers</h2><br/><p>Please list the officers of the company.</p></div>
<div class="form-right">
<div>
<%= company.simple_fields_for :officers do |officer|%>
<%= render 'officer_fields', f: officer %>
<% end =%>
<%= link_to_add_association 'Add Officer', company, :officers, class: "btn btn-default add-button" %>
</div>
</div>
</div>
<div id="directors" class="form_section">
<div class="form-left"><h2>Directors</h2><br/><p>Please list the initial directors of the company. We recommend an odd number to avoid a deadlocked board.</p></div>
<div class="form-right">
<div>
<%= company.simple_fields_for :people do |person|%>
<%= render 'person_fields', f: person %>
<% end =%>
<%= link_to_add_association 'Add Director', company, :people, class: "btn btn-default add-button" %>
</div>
</div>
</div>
<div id="contractor" class="form_section">
<div class="form-left"><h2>Employees Contractors</h2></br><p>Please list all employees, independent contractors and any other individual or entity who will be providing services to the company at the time of incorporation. Each of these persons should have written agreements with the company. Please check the box next to each name for whom you would like us to prepare agreements</p></div>
<div class="form-right">
<div>
<%= company.simple_fields_for :contractor_people do |contractor| %>
<%= render 'contractor_person_fields', f:contractor %>
<% end =%>
<%= link_to_add_association 'Add Person', company, :contractor_people, class: "btn btn-default add-button" %>
</div>
<div class="form_subsection">
<div>
<%= company.simple_fields_for :contractor_orgs do |contractor| %>
<%= render 'contractor_org_fields', f:contractor %>
<% end =%>
<%= link_to_add_association 'Add Company', company, :contractor_orgs, class: "btn btn-default add-button" %>
</div>
</div>
</div>
</div>
<div id="ip" class="form_section">
<div class="form-left">
<h2>Intellectual Property</h2><br/><p>Please list existing intellectual property (including business plans, software, artwork, inventions, trade secrets and the like) that has been created for use in the company and the name of the person or people who created it.</p>
</div>
<div class="form-right">
<div>
<%= company.simple_fields_for :ips do |ip| %>
<%= render 'ip_fields', f: ip %>
<% end =%>
<div class="add-field"><%= link_to_add_association 'Add IP', company, :ips, class: "btn btn-default add-button" %></div>
</div>
</div>
</div>
<div id="shareholders" class="form_section">
<div class="form-left"><h2>Shareholders</h2><br/><p>Please list all individuals to hold equity in this company.</p></div>
<div class="form-right">
<div>
<%= company.simple_fields_for :shareholders do |shareholder|%>
<%= render 'shareholder_fields', f: shareholder %>
<% end =%>
<%= link_to_add_association 'Add Shareholder', company, :shareholders, class: "btn btn-default add-button" %>
</div>
</div>
</div>
<% end =%>
</div>
<%= f.button :submit, id:"incorporation_submit", class: "btn btn-primary" %>
<%= button_to "Update", incorporation_path(#incorporation), method: :post, remote: true %>
<% end =%>
</div>
I figure I must be forgetting something. Any thoughts are much appreciated.

Answer 1

Routes for update method was by default added when you wrote resources :incorporations, so change your routes to
resources :incorporations
And your path should be incorporation_path, also method in button_to is by default post, you don't need to write it,
change your button_to to
<%= button_to "Update", incorporation_path(#incorporation), :remote => true %>
But, if you are submitting a form, it should have a submit button instead of button_to, your form should look like this
<%= form_for #incorporation, remote: true do |f| %>
# form content
<%= f.submit "Submit" %>
<% end %>
Hope this helps!

Answer 2

Instead of :
<%= button_to "", update_incorporation_path(#incorporation),
:remote => true, :method => :post %>
Try :
<%= button_to "Update", incorporation_path(#incorporation),
method: :post, remote: true %>
In your route:
resources :incorporations
The resources ships with default actions index,new, create,edit, update, destroy. You don't need to declare it manually.
You can verify the routes from your console.
rake routes | grep 'incorporations'
You will get output like :
From here you can construct your path for the update action.
Hope it helps :)