As part of a school project I need to set up an items collection which
has categories and subcategories. I have used scaffolding to create
these but when i edited the subcategory controller file by inserting
this into the edit function: @category = Category.find_by_id(:all) and
edited the model sub_category.rb to have the following line in it:
Now my problem is that when I now click the edit button it comes up with
TypeError in Sub_categories#edit
Showing ItemCollection/app/views/sub_categories/_form.html.erb where
line #1 raised:
nil is not a symbol
Extracted source (around line #1):
1: <%= form_for(@sub_category) do |f| %>
2: <% if @sub_category.errors.any? %>
3: <div id="error_explanation">
4: <h2><%= pluralize(@sub_category.errors.count, "error") %>
prohibited this sub_category from being saved:</h2>
I even removed my changes to those files and the error still appears.
Anyone have any ideas what might be causing this?
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