ActionController::UrlGenerationError routing error - ruby-on-rails

Question

I set up a Rails toy to play with Twitter API, but already having challenges right from the start. My files look like this:
routes.rb
Rails.application.routes.draw do
devise_for :users
root to: 'accounts#index'
resources :accounts do
resources :posts
end
end
account.rb
class Account < ActiveRecord::Base
belongs_to :user
has_many :posts
accepts_nested_attributes_for :posts
validates :name, :description, presence: :true
end
post.rb
class Post < ActiveRecord::Base
belongs_to :account
validates :tweet, presence: true
end
accounts_controller.rb
class AccountsController < ApplicationController
before_action :authenticate_user!
def index
#accounts = Account.all
#user = current_user
end
def new
#account = Account.new
end
def create
#account = Account.new(account_params)
#account.user = current_user
if #account.save
flash[:notice] = "Account succesfully created."
redirect_to #account
else
flash.now[:alert] = "Oops, something went wrong!"
render 'new'
end
end
def show
#account = Account.find(params[:id])
end
def update
end
def destroy
end
private
def account_params
params.require(:account).permit(:name, :description, posts_attributes: [:tweet])
end
end
post_controller.rb
class PostsController < ApplicationController
before_action :set_account
def index
#posts = Post.all
end
def new
#post = Post.new
end
def create
#post = #account.posts.build(post_params)
if #post.save
flash[:notice] = "Tweet created successfully."
redirect_to [#account, #post]
else
flash.now[:alert] = "Something went wrong."
render 'new'
end
end
def edit
#post = Post.find(params[:id])
end
def update
if #post.update
flash[:notice] = "Tweet updated."
redirect_to [#account, #post]
else
flash.now[:alert] = "Something is not right!"
render 'edit'
end
end
def destroy
end
def show
#post = Post.find(params[:id])
end
private
def post_params
params.require(:post).permit(:tweet)
end
def set_account
#account = Account.find(params[:account_id])
end
end
The tricky part is here:
What I am trying to do here is on the accounts page, when a user clicks on the account name, he should be redirects to the new action of the Posts controller that will allow him to create a new post for the account in question. Somehow, I am not sure how to pass the :account_id parameter.
views/accounts/index.html.erb
<table>
<tr>
<th>Account Name</th>
<th>Description</th>
<th>Tweets</th>
</tr>
<% #user.accounts.each do |account| %>
<tr>
<td><%= link_to account.name, new_account_post_path(#account) %></td>
<td><%= account.description %></td>
<td><%= account.posts.count %></td>
</tr>
<% end %>
</table>
<%= link_to "Sign out", destroy_user_session_path, :method => :delete %>
<%= link_to "Create new account", new_account_path %>
Error in browser:

Answer 1

You need to change
<%= link_to account.name, new_account_post_path(#account) %>
to
<%= link_to account.name, new_account_post_path(account) %>

Answer 2

Use this code:
<% #user.accounts.each do |account| %>
<tr>
<td><%= link_to account.name, new_account_post_path(account) %></td>
<td><%= account.description %></td>
<td><%= account.posts.count %></td>
</tr>
<% end %>