I'm using form_for to create a chatroom and when I view the page I get the following error:
NoMethodError in Chatrooms#new
undefined method `chatrooms_path' for #<#<Class:0xa862b94>:0xa5307f0>
Here's the code for the view, located in app/views/chatrooms/new.html.erb:
<div class="center">
<%= form_for(#chatroom) do |f| %>
<%=f.text_field :topic%>
<br>
<%=f.submit "Start a discussion", class: "btn btn-large btn-primary"%>
<% end %>
</div>
Here's the relevant controller:
class ChatroomsController < ApplicationController
def new
#chatroom = Chatroom.new
end
def show
#chatroom = Chatroom.find(params[:id])
end
end
If I change the line
<%= form_for(#chatroom) do |f| %>
to
<%= form_for(:chatroom) do |f| %>
it works fine.
I've searched around for similar questions but none of the solutions have worked for me. Help?
It is because you didn't create route/action for ChatroomsController. When you render new form it is pointing to create action by default, if you want to change handler action, use
form_for #chatroom, :url => some_other_path
Related
I am trying to make a contact me form in Rials 5 with the built in Mail features.
I put it together a lot like a regular controller and views with a Mailer as the model. But when I have it all written out I get the error:
undefined method `model_name' for #ContactMailer
Contact is the name of the Mailer.
The error comes up when I try to view the new.html.erb page with rails server running. It looks like this:
Screen Shot
Here is the code I am working with:
contacts_controller.rb
class ContactsController < ApplicationController
def new
#contact = ContactMailer.new
end
def create
#contact = ContactMailer.new(params[:name, :email, :message])
if #contact.deliver
flash[:success] = "Your message has been sent."
else
flash[:error] = "There was a problem sending your message."
render 'new'
end
end
And
new.html.erb
<%= form_for #contact do |f| %>
<div class="form-group">
<%= f.label :name %>
<%= f.text_field :name, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :email %>
<%= f.email_field :email, class: 'form-control', required: true %></div>
<div class="form-group">
<%= f.label :message %>
<%= f.text_area :message, class: 'form-control' %>
</div>
<%= f.submit "Send", class: 'btn btn-default' %>
<% end %>
There is also the generated Mailer and views, but I have not changed anything with those.
From what I have been able to research the error could be that I have not initialized the #contact variable, but I believe that I have. And now I am lost. Any help would be appreciated.
As additional information:
My plan is for this contact form to send an email using send grid on Heroku.
You are trying to build a mailer.Thats not how they are used. They are not models.
Instead you would do something like:
ContactMailer.some_method_you_added_to_your_mailer(params[:name, :email, :message]).deliver_now
You don't use new on them.
Suggest you read over http://guides.rubyonrails.org/action_mailer_basics.html .
I'm still learning RoR and have followed various tutorials online. In that process I believe I have messed up the nice flash notifications that Bootstrap 2 showed when validating Simple_Form submissions. I have tried to update my code, but without success. Here is what I have so far...
Running:
Rails 3.2.13
Ruby 2.0.0
I just upgraded to Bootstrap 3 using this gem in my gemfile:
gem 'bootstrap-sass-rails'
In my application.html.erb I have:
<%= render 'layouts/messages' %>
In my _messages partial I have:
<% flash.each do |type, message| %>
<div class="alert <%= bootstrap_class_for(type) %> fade in">
<button class="close" data-dismiss="alert">×</button>
<%= message %>
</div>
<% end %>
In my application_helper.rb I have:
def bootstrap_class_for flash_type
case flash_type
when :success
"alert-success"
when :error
"alert-error"
when :alert
"alert-block"
when :notice
"alert-info"
else
flash_type.to_s
end
end
In my users_controller.rb I have:
def update
respond_to do |format|
if #user.update_attributes(params[:user])
format.html { redirect_to #user, notice: 'Account successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: #user.errors, status: :unprocessable_entity }
end
end
end
And in my edit.html.erb view I have:
<%= simple_form_for(#user) do |f| %>
<%= f.input :firstname %>
<%= f.input :lastname %>
<%= f.input :email %>
<%= f.input :password %>
<%= f.input :password_confirmation %>
<%= f.submit "Save changes", class: "btn btn-lg btn-primary" %>
<% end %>
The validation works, but when returned to the edit view, no formatting (red for errors) or flash message appears. Only a very hard to spot message outside each field is displayed. I must be missing some link between Simple_Form and Bootstrap 3, just don't know what.
I found another post where poster suggested to add:
config.input_class = "form-control"
to my simple_form initializer, but that gave me an error (think I might not have the latest version?):
undefined method `input_class=' for SimpleForm:Module (NoMethodError)
I wish I knew what was going on but I really hope someone can help me get the formatting and flash messages back. Apologies if this is a total newbie question, but I feel a little lost and possibly regretting that I upgraded too soon to Bootstrap 3 maybe.
A thousand thanks in advance to anyone reading all this :)
I got the following mix of code from railscasts.com and other websites.
<% flash.each do |name, msg| %>
<div class="alert alert-<%= name == :notice ? "success" : "error" %>">
<a class="close" data-dismiss="alert">×</a>
<%= msg %>
</div>
<% end %>
Add this to the top of your controller:
respond_to :html, :json
Put this in each controller action:
def create
...
flash[:notice] = 'User was successfully created.'
respond_with(#user)
end
works with rails 3.2+ and 4.0 and twitter bootstrap rails 2, untested in tbsr 3 but will probably work fine.
This worked for me far much better than others as it;s shorter and includes all alert cases -> error, success, alert & notice provided by Bootstrap.
N.B: I renamed your _messages partial to _flash_messages because that is what most people use.
And for those who may be wondering where to generate the _flash_messages partial, it's pretty easy, just right-click your layouts folder in views and 'add new file'. You can call it _flash_messages as I've done, and ensure you have that first underscore (_) before 'flash...'. Tap 'Save'
Now in your _flash_messages.html.erb partial, use this
<% unless flash.blank? %>
<% flash.each do |type, message| %>
<div class="alert <%= flash_class(type.to_s) %>">
<button class="close" data-dismiss="alert">x</button>
<%= message %>
</div>
<% end %>
<% end %>
And in your application_helper.rb use this
def flash_class (type)
case type
when 'error'
"alert-error"
when 'notice'
"alert-info"
when 'alert'
"alert-block"
when 'success'
"alert-success
else
type.to_s
end
end
Then in your application.html.erb, add this as your first line in your first div
<%= render partial: 'layouts/flash_messages', flash: flash %>
Notice that we render the partial (any partial that is), without the 'starter' underscore(_), i.e before the word 'flash..'
You can check out this answer from teamtreehouse on displaying different alert cases.
Hope this helps!
I have the following routes:
routes.rb:
namespace :admin do
#...
resources :carousel_images
end
controller:
def new
#admin_carousel_image = CarouselImages.new
#...
In view, I render 'form' :
<%= form_for [:admin, #admin_carousel_image] do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
</div>
<div class="form-actions">
<%= f.button :submit %>
</div>
<% end %>
The model:
class Admin::CarouselImage < ActiveRecord::Base
attr_accessible :image
mount_uploader :image, CarouselUploader
end
When I visit /admin/carousel_images/new, I get
NoMethodError in Admin/carousel_images#new
Showing
/home/pinouchon/code/sharewizz/webapp/app/views/admin/carousel_images/_form.html.erb
where line #1 raised:
undefined method `admin_carousel_images_index_path' for
#<#:0xdfe45a4>
I tought that "_index" in the path wasn't appended when the resource is plural. Why is it appended in my case ?
Rails occasionally cannot figure out how to pluralize or detect a plural. Have you tried inflectors? I had a similar case and worked for me.
ActiveSupport::Inflector.inflections(:en) do |inflect|
inflect.irregular 'carousel_image', 'carousel_images'
end
BTW, I am using Rails 5.1.
Change the following and try:
def new
#admin_carousel_image = Admin::CarouselImage.new #CarouselImage is your model name here. It should be singular.
#...
end
In the View, if you are rendering your form from the index.html.erb,
you should have the following:
<%= render 'form' %>
The index file should be in the order of app/view/admin/carousel_images/index
Here the route file find the index.html.erb in carousel_images folder and render the form.
This is likely an error due to my minimal understanding of Rails and how to use variables across models, so if there is more code needed to answer it or if my terminology is incorrect, let me know and I will gladly update the question.
I have a feed of posts that I want a user to be able to "like." While the following code allows likes to work on an individual post's page - site.com:3000/posts/*post.id* - with the form data being passed of like[liked_post_id]:*post.id*, when I try to submit a like on a profile - site.com:3000/users/*user.id* - which contains a feed of posts, the form data being passed is like[liked_post_id]: (blank value)
How can I pass the post's ID within a feed of posts to the liked_post_id variable in _like.html.erb?
I have noticed that the action of the like form is /likes across the board. Would this will only work when you are on the page site.com:3000/posts/*post.id*? I'm curious if I need to modify the it so that the action of the form is /posts/*post.id*/likes when you are on the page site.com:3000/users/*user.id*
From my post view:
#views/posts/_post.html.erb:
...
<%= render 'posts/like_form' if signed_in? %>
...
Route to proper form:
#views/posts/_like_form.html.erb:
<div id="like_form">
<% if current_user.likes_this?(#post) %>
<%= render "posts/unlike" %>
<% else %>
<%= render "posts/like" %>
<% end %>
</div>
Like from:
#views/posts/_like.html.erb
<%= form_for Like.new, :remote => true do |f| %>
<%= f.hidden_field :liked_post_id, :value => #post.id %>
<%= f.submit "Like" %>
<% end %>
From profile (feed of posts):
#views/users/show.html.erb
...
<%= render #posts %>
...
Likes controller:
#controllers/likes_controller.rb
class LikesController < ApplicationController
before_filter :signed_in_user
def create
#post = Post.find(params[:like][:liked_post_id])
current_user.like!(#post)
respond_to do |format|
format.html { redirect_to root_url }
format.js
end
end
...
User model:
#models/user.rb
...
def like!(post)
likes.create!(liked_post_id: post.id)
end
...
#frank-blizzard has pointed out that my form markup is an issue. On a post's page the generated markup is:
<input id="like_liked_post_id" name="like[liked_post_id]" type="hidden" value="73" />
While on the feed page:
<input id="like_liked_post_id" name="like[liked_post_id]" type="hidden" />
You can do something like this:
<% form_for Like.new, :remote => true do |f| %>
<%= f.hidden_field :post_id, :value => #post.id %>
<%= f.submit %>
<% end %>
The current_user.likes.build(...) part should get out of your view and inside your controller. You are using a current_user.like! method so I guess you have implemented already some method in user model to accomplish this. If not build your like in the create action of LikesController where you can access params[:like].
def create
#post = Post.find(params[:like][:post_id])
current_user.likes.build(#post)
# ...
end
EDiT
You might need to pass your #post variable correctly into your _like_form partials, like so:
#views/posts/_post.html.erb:
...
<% if signed_in? %>
<%= render 'posts/like_form', :post => #post %>
<% end %>
...
This will give you acceess to a post variable inside the partial so you can prepopulate your forms value with its id. See this questions as well Pass a variable into a partial, rails 3? and make sure to read up on how to pass variables correctly to partials. you can debug your views using <%= debug <variablename> %>
In Rails 3.0 I have the standard 'new' form that creates a new record, in this case a patient. It works fine and the validations / error showing also work fine.
The client now wants the form in Spanish.
So, I did this:
Created a new html doc called "newspanish" (Cut / paste code from "patients/new")
Created a new partial called "_form_newspanish" and referenced it where the "form" partial is in "newspanish" (Cut / paste code from view "patients/_form")
Created a controller action in "patients" called "newspanish" and cut/pasted exact code from the "new" action.
I left the "create" action untouched.
Added match "patients/newspanish" to routes.
Translated the english parts to spanish in views/newspanish and views/_form_newspanish. Just the stuff that users read on the page, of course...not the rails code.
And, it works, for perfect submissions.
For submissions that fail validation (like putting 3 digits in as a phone number), the page reverts to the view "patients/new" and shows the errors above the form... in English, of course, because patients/new is in English.
Of course, I want it to revert to "views/newspanish" and also show custom verbage in the validations errors (spanish).
Any thoughts on how I can get the patients/newspanish view to load when error validation it tripped?
Here's my code for "_form_newspanish"
<%= form_for(#patient) do |f| %>
<% if #patient.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#patient.errors.count, "error") %> prohibited this subscriber from being saved:</h2>
<ul>
<% #patient.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<p><label for="mobile">Número de teléfono celular o móvil*</label>: <%= f.text_field :mobile %></p>
<br />
<%= f.submit "Inscribirme" %>
</div>
<% end %>
And controller... patients/newspanish
def newspanish
#patient = Patient.new
respond_to do |format|
format.html # new.html.erb
format.xml { render :xml => #patient }
end
end
<%= form_for(#patient) do |f| %>
is creating a form whose url is submits to is "/patients" which matches to patients_controller, create action.
That create action probably has a line that says (in my pseudo code)
if #patient.save
redirect to somewhere
else
render :new
end
That line "render :new" is showing the "patients/new" view.
So what you have to figure out is to either
1) detect in patients_controller # create how to tell if its spanish, and render "newspanish"
OR
2) change <%= form_for(#patient) do |f| %> to submit to a new url that just handles the spanish version, and make a new controller or action that just handles the spanish form (and renders "newspanish" if the #patient doesn't save
For #2, you could manually change where the form submits to with
<%= form_for(#patient), :url => spanish_patients_path do |f| %>
and in your routes create
post "patients/spanish" => "patients#create_in_spanish"
and add def create_in_spanish to your patients controller