I'm trying to get an admin interface working in Rails, but I'm having trouble using link_to with the nested routes. I'm trying to get a link to /admin/cake_class/:id but it's sending me to admin/cake_class.:id instead.
config/routes.rb:
namespace :admin do
resources :cake_class
end
/app/views/admin/cake_class/index.html.erb
<h1>all classes</h1>
<% #classes.each do |c| %>
<%= c.date %>
<%= c.name %>
<%= link_to 'Show', admin_cake_class_path(c) %>
<% end %>
Any suggestions?
The :resources should be plural, :cake_classes, which could be tripping you up.
What does the output of rake routes show?
Related
I'm a real newbie at Ruby and Rails, and I've been looking for the solution for two days. I need to submit data from form_tag to action 'create' in my controller to add new entries to database, but looks like I'm doing something terribly wrong, because absolutely nothing happens, and it seems that form_tag doesn't even redirect to needed action.
Here's the page code:
<h1>Todos</h1>
<% #projects.each do |project| %>
<tr>
<h2><%= project.title %></h2>
<% project.todos.each do |todo| %>
<ul style="list-style-type:disc">
<li><%= todo.text %></li>
</ul>
<% end %>
</tr>
<% end %>
<%= form_tag({controller: "mega", action: "create"}, method: "get", remote: true) do %>
<h2>New todo</h2>
<p>
<%= text_field_tag 'text' %>
</p>
<p>
<%= select_tag 'title', options_from_collection_for_select(#projects, 'id', 'title') %>
</p>
<p>
<%= link_to 'CANCEL' %>
<%= link_to 'OK', "", :onclick => "$('#form_id').submit()" %>
</p>
<% end %>
And the controller:
class MegaController < ApplicationController
def index
#projects = Project.all
#todos = Todo.all
end
def update
end
def create
#newTodo = Todo.create(text: params[:text])
#newProject = Project.find_by(title: params[:title])
#newProject.todos << #todo
#newTodo.save
end
end
My routes file. I seriously don't know how it works:
Rails.application.routes.draw do
get 'mega/index'
root 'mega#index'
get 'mega/update'
post 'mega/create'
resources :todos
resources :projects
end
You create resources with a POST request. Never GET.
GET requests should be idempotent - they should not update or alter resources on the server. One very important reason is that they are stored in the browser's history, so pressing the back button will cause unintended consequences for the user.
In Rails flavor MVC instead of tacking the action name on the path of the route you use the HTTP verb to create routes to the correct action:
GET /things things#index
POST /things things#create
I'm not going to attempt to salvage your code (it's deeply flawed) and instead show you how you would solve this the rails way as it is much simpler:
<%= form_for(Todo.new) do |f| %>
<h2>New todo</h2>
<%= f.text_field :text %>
<%= f.collection_select(:project_id, #projects, :id, :title, prompt: true) %>
<%= f.submit %>
<% end %>
This would submit to todos#create - if you want to route it to an unconventional action you can use the url option:
<%= form_for(Todo.new, url: polymorphic_path(controller: 'foo', action: 'bar')) do |f| %>
It's best to learn the rules before you break them.
I have a little problem of link.
I have 2 models nested, one Faqcategoryand Faq.
The route is
resources :faqcategories, :path => 'faqs' do
resources :faqs, :path => 'question'
end
I can display all the "faqcategories" at http://localhost:3000/faqs/
and all the faqcategory as "questions" at http://localhost:3000/faqs/8
But when I want to go on the show of the question at http://localhost:3000/faqs/8/question/1 , it sends me at http://localhost:3000/faqs/1/question/8
I have set up the view like that:
<% #faqs.each do |question| %>
<%= link_to question.title, faqcategory_faq_path(question), class: "btn btn-rose btn-round" %>
<% end %>
In the FaqcateroriesController the "show" is set up like that:
def show
#faqs = #faqcategory.faqs
end
How do you think I can solve that?
I have found the solution.
<% #faqcategory.faqs.each do |question| %>
<%= link_to question.title, faqcategory_faq_path(question.faqcategory_id, question), class: "btn btn-rose btn-round" %>
<% end %>
It was missing "question.faqcategory_id"
In this Rails app, Users write Stories. A Story may be part of a Collection. Collections belong to the User who created it.
I am trying to show a single Story with links to the Collections it is part of. The collection.name part works but I can't get the collection_path right. Thanks for your help.
stories/show.html.erb
<% #story.collections.each do |collection| %>
<%= link_to collection.name, collection_path %>
<% end %>
rake routes for collections
user_collections GET /users/:user_id/collections(.:format) collections#index
POST /users/:user_id/collections(.:format) collections#create
new_user_collection GET /users/:user_id/collections/new(.:format) collections#new
edit_user_collection GET /users/:user_id/collections/:id/edit(.:format) collections#edit
user_collection GET /users/:user_id/collections/:id(.:format) collections#show
routes.rb
resources :users do
resources :collections
Solved it by using the following with the help of Sebastián Palma who answered this earlier.
<% #story.collections.each do |collection| %>
<%= link_to collection.name, user_collection_path(collection.user, collection), class: 'btn btn-lake' %>
<% end %>
I'm building a Rails app that is a podcast directory. I have Podcasts and Episodes. Episode belongs to Podcast and Podcast has many Episodes. On the home page I want to show the last 5 episodes that have been created and link to them.
I have it working with this, though this is obviously not the way to do it:
<% #episodes.each do |episode| %>
<%# link_to episode do %>
<%= episode.title %>
<%# end %>
<% end %>
The link_to is commented out because that's part of my problem.
Here is the index controller:
def index
#podcasts = Podcast.where.not(thumbnail_file_name: nil).reverse.last(5)
#episodes = Episode.where.not(episode_thumbnail_file_name: nil).reverse.last(5)
end
Here is the routes file:
Rails.application.routes.draw do
devise_for :podcasts
resources :podcasts, only: [:index, :show] do
resources :episodes
end
authenticated :podcast do
root 'podcasts#dashboard', as: "authenticated_root"
end
root 'welcome#index'
end
Results of rake routes | grep episode:
podcast_episodes GET /podcasts/:podcast_id/episodes(.:format) episodes#index
POST /podcasts/:podcast_id/episodes(.:format) episodes#create
new_podcast_episode GET /podcasts/:podcast_id/episodes/new(.:format) episodes#new
edit_podcast_episode GET /podcasts/:podcast_id/episodes/:id/edit(.:format) episodes#edit
podcast_episode GET /podcasts/:podcast_id/episodes/:id(.:format) episodes#show
PATCH /podcasts/:podcast_id/episodes/:id(.:format) episodes#update
PUT /podcasts/:podcast_id/episodes/:id(.:format) episodes#update
DELETE /podcasts/:podcast_id/episodes/:id(.:format) episodes#destroy
How can I correctly create a text link of the title using a link_to that links directly to the episode? Thanks!
When you're using link_to with a block, the only thing you need to pass into the block is the text of the link, so you should be able to do this (assuming your routes are setup properly):
<% #episodes.each do |episode| %>
<%= link_to episode, class="tt-case-title c-h5" do %>
<%= episode.title %>
<% end %>
<% end %>
UPDATE
You really don't even need to use a block here. This should work fine for you and be a little more succinct.
<% #episodes.each do |episode| %>
<%= link_to episode.title, episode, class="tt-case-title c-h5" %>
<% end %>
UPDATE #2
Thanks for including your route info. Try this:
<% #episodes.each do |episode| %>
<%= link_to episode.title, podcast_episode_path(episode.podcast, episode), class="tt-case-title c-h5" %>
<% end %>
I have the following routing:
resources :pages do
resources :logos do
member do
post 'vote'
end
end
end
Then I have a view that is rendered in /pages/:page_id/logos, that looks like this:
<ul>
<% #logos.each do |logo| %>
<li>
<%= image_tag(logo.url) %>
<%= form_for([logo.page, logo], url: {action: "vote"}, :method => :post) do |f| %>
<% end %>
</li>
<% end %>
</ul>
And I keep getting this error:
No route matches {:action=>"vote", :page_id=>"95", :controller=>"logos"}
What am I missing here?
try
form_for [logos.page, logo, :vote], method: :post
or, it may be that the action comes first in the array
[:vote, logo.page, logo]
Pardon that I don't have to look it up again.