undefined method `memo' for nil:NilClass error using best_in_place - ruby

Question

I've created a simple memo feature for my app, and have successfully implemented in-place editing using the best_in_place gem.
The problem I am having is creating new memos using in-place editing, the following code returns undefined methodmemo' for nil:NilClass`
#partial for logged in users on homepage
<% provide(:title, current_user.name) %>
<h1>Hey
<%= current_user.name %>
</h1>
<div class="row-fluid">
<div class="span12">
<div class="row-fluid">
<div class="span6">
<h2>Memos</h2>
<ul id="memos" data-update-url="<%= sort_memos_url %>">
<%# render #memos %>
<% #memos.each do |memo| %>
<%= content_tag_for :li, memo do %>
<%= best_in_place memo, :memo %>
<% end %>
<% end %>
</ul>
<p><%# link_to "Add a memo", new_memo_path %></p>
<p><%= best_in_place #memo, :memo, :path => new_memo_path, :nil => "Add a memo" %></p>
</div>
<div class="span6"><h2>Coming up...</h2></div>
</div>
</div>
</div>
#memos controller
def index
#memos = Memo.order("position")
end
def show
#memo = Memo.find(params[:id])
end
def new
#memo = Memo.new
end
def create
#memo = Memo.new(params[:memo])
if #memo.save
redirect_to #memo, notice: "Successfully created memo."
else
render :new
end
end
def edit
#memo = Memo.find(params[:id])
end
def update
#memo = Memo.find(params[:id])
#memo.update_attributes(params[:memo])
respond_with #memo
end
def sort
params[:memo].each_with_index do |id, index|
Memo.update_all({position: index+1}, {id: id})
end
render nothing: true
end
#home page controller
respond_to :html, :json
def home
if signed_in?
#memos = Memo.order("position")
end
end
def sort
params[:memo].each_with_index do |id, index|
Memo.update_all({position: index+1}, {id: id})
end
render nothing: true
end
def help
end
end
I am new to rails and programming in general so I am sure it is a simple fix, none-the-less it's one that I cannot seem to remedy.

Answer 1

Have a look at (see 3.3.4):
http://guides.rubyonrails.org/layouts_and_rendering.html#using-partials
Using partials and variables, means you need to stick to a certain naming convention. If your not doing that, then you need to send the variable (from the calling view) with it.
<%= render :partial => "form", :locals => { :zone => #zone } %>