Question

I saw similar examples here. But it just doesn’t work for me.
I want to create/submit an activity for post. There are several days under a post. And an activity is under a specific date. See models below.

Models:

class Post < ActiveRecord::Base
  has_many :dayinposts
  has_many :activitys, :through => :dayinposts
end

class Dayinpost < ActiveRecord::Base
  belongs_to :post
  has_many :activitys
end

class Activity < ActiveRecord::Base
  belongs_to :dayinpost
end

Routes:

resources :posts do
  resources :dayinposts  do
resources :activitys
  end 
end

rake routes

post_dayinpost_activitys GET /posts/:post_id/dayinposts/:dayinpost_id/activitys(.:format)          activitys#index
                         POST /posts/:post_id/dayinposts/:dayinpost_id/activitys(.:format)          activitys#create

show.html.erb

<% @post.dayinposts.each do |dayinpost| %>

<% dayinpost.activitys.each do |activity| %>
  <p>
  <b>Action:</b>
  <%= activity.action %>
  </p>
<% end %>

<%= form_for([@post, dayinpost, dayinpost.activitys.build]) do |f| %>
  <div class="field">
  <%= f.label :action %><br />
  <%= f.text_field :action %>
  </div>

<div class="actions">
<%= f.submit %>
</div>
<% end %>

<% end %>

error

undefined method `post_dayinpost_activities_path' for #<#<Class:0x40cb6d8>:0x40c9890>

But I have saw it in the rake routes…
thanks in advance!

Answer 1

The correct pluralization for “activity” is “activities”.

In your config/routes.rb you have “activitys”, which is wrong.