partial form not creating new value RoR - ruby-on-rails

Question

I am new to Ruby on Rails. My Question might sound weird, but i am stuck. i have a form Create that is on html page. i used render partial, but this form is not creating any value. here is my controller code.
Controller.rb
before_filter :signed_in_user, only: [:create, :destroy]
def create
#suppliers = current_user.suppliers.build(params[:supplier_name])
if #suppliers.save
flash[:success] = "Supplier Saved!"
redirect_to 'suppliers/home'
else
render 'suppliers/home'
end
end
def destroy
end
def home
if signed_in?
#supplier = current_user.suppliers.build
#feed_items = current_user.feed.paginate(page: params[:page])
end
end
my home.html.erb
<div class="row">
<aside class="span4">
<section>
<%= render 'suppliers/suppliers_form' %>
</section>
</aside>
<div class="span8">
<h3>Micropost Feed</h3>
<%= render 'suppliers/feed_supplier' %>
</div>
</div>
My _supplier_form.html.erb is
<%= form_for(#supplier) do |f| %>
<div>
<%= f.text_field :supplier_name, placeholder: "Add new Supplier" %>
</div>
<%= f.submit "Add", class: "btn btn-large btn-primary" %>
<% end %>
My _feed_supplier.html.erb is
<% if #feed_items.any? %>
<ol class="microposts">
<%= render partial: 'suppliers/feed_item', collection: #feed_items %>
</ol>
<%= will_paginate #feed_items %>
<% end %>
my _feed_item.html.erb is
<li id="<%= feed_item.id %>">
<span class="user">
<%= link_to feed_item.user.name, feed_item.user %>
</span>
<span class="content"><%= feed_item.supplier_name %></span>
</li>
please guide me to right direction, and if anything else is required then do ask. Thanks in advance
Note: all the mentioned files are in same folder i.e. suppliers. except the controller file

Answer 1

form_for #supplier
will create a parameter hash like
{ :supplier => { :supplier_name => '[some value you put in your form]' }}
so the create action should use
#suppliers = current_user.suppliers.build(params[:supplier])
There is no params[:supplier_name].

Answer 2

I think for the partials, you don't need to write suppliers/*, for example:
<%= render 'suppliers/suppliers_form' %>
could just be
<%= render 'suppliers_form' %>
not sure why that would be causing your app to do what it's doing, but worth a try!