Question

I have a problem with simple form for, I get this error url(http://localhost:3000/konkurrencer/new):
Showing C:/Rails/konkurranceportalen/app/views/konkurrancers/_form.html.erb where line #1 raised:

undefined method `konkurrancers_path' for #<#<Class:0x382ea08>:0x382d4a8>

Extracted source (around line #1):

1: <%= simple_form_for(@konkurrancer) do |f| %>
2:     <%= f.error_messages %>
3:     <%= f.input :name %>
4:     <%= f.input :banner1 %>

My model konkurrancer.rb

class Konkurrancer < ActiveRecord::Base
has_many :ratings
belongs_to :kategori
validates_presence_of :name, :tracking, :banner1, :banner2, :kategori_id, :udtraekkes, :arrangeor
has_friendly_id :name, :use_slug => true
end

My form:

<%= simple_form_for(@konkurrancer) do |f| %>
    <%= f.error_messages %>
    <%= f.input :name %>
    <%= f.input :banner1 %>
    <%= f.input :banner2 %>
    <%= f.input :tracking %>
    <%= f.input :arrangeor %>
    <%= f.input :vaerdi %>
    <%= f.input :udtraekkes %>
    <%= f.association :kategori %>
    <%= f.input :note %>
    <%= f.button :submit %>
<% end %>

My controller:

  def new
    @konkurrancer = Konkurrancer.new

    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @konkurrancer }
    end
  end

My route.rb

resources :konkurrencer, :controller => 'konkurrancers'

Answer 1

You may not have defined koncurrancer as a resource in config/routes.rb. Only if you define it as a resource, you will get koncurrancers_path helper method defined. You should add

map.resources :koncurrancers

to your routes.rb file