I have a Rails 3 blog-style application, where I've got an admin namespace for backend purposes and a controllers/admin subfolder containing the respective posts_controller.rb.
So the page's root url is set to "admin/posts#index", and post creation works fine, except when I configure the routes file to redirect the user to root_url if he types "/admin/articles".
This is my routes file:
BlogDos::Application.routes.draw do
# Index
root to: "admin/posts#index"
# If I uncomment these two lines below, the post#create function doesn't work. When I
# submit the "new post" form, the controller just skips the function entirelly and
# redirects me to admin/posts#index without creating the new post.
# match "admin/posts" => redirect("/")
# match "admin/posts/" => redirect("/")
namespace :admin do
resources :cpanel
resources :posts do
resources :comments, :only => [:create, :destroy]
end
root to: "cpanel#index"
end
..
end
And this is my posts_controller.rb
def create
#usuario = current_user
#post = #usuario .posts.create(params[:post])
respond_to do |format|
if #post.save
format.html { redirect_to article_dir_path(#post.year, #post.month, #post.slug), notice: 'Article was successfully created.' }
format.json { render json: article_dir_path(#post.year, #post.month, #post.slug), status: :created, location: article_dir_path(#post.year, #post.month, #post.slug) }
else
format.html { render action: "new" }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
Strangely, this only happens with the Create action, If i edit an article and update it, everything works fine.
I have sorted out almost everything from looking at Rails tutorials and QA websites, except this little problem, I'm sure it is something rather simple, but i'm new to Rails and not very familiar with its routing mechanics yet.
The form that creates the post submits to
/admin/posts
If you redirect that route to the index page, the controller action is never called.
Related
In my Rails project, I ran:
rails generate scaffold car
which successfully created all of the necessary files and directories for the application. This includes the standard application.html.erb layout file, as well as the app/views/cars directory that includes more standard html.erb files (index, show, ETC.)
In addition, my cars route is in place in config/routes.rb.
My next command is rails server, which is also successful.
When I open my browser and go to localhost:3000, the welcome page for ruby on rails pops up as normal. I'm expecting that when I go to localhost:3000/cars, I'll see the html rendered from app/views/cars/index.html.erb. If not, I at least expect that it will default to application.html.erb.
Instead, I am repeatedly receiving the following:
>ActionController::UnknownFormat in CarsController#index
>CarsController#index is missing a template for this request format and variant. request.formats: ["text/html"] request.variant: []
My controller class looks like this:
class CarsController < ApplicationController
before_action :set_car, only: [:show, :edit, :update, :destroy]
# GET /cars
# GET /cars.json
def index
#cars = Car.all
end
# GET /cars/1
# GET /cars/1.json
def show
end
# GET /cars/new
def new
#car = Car.new
end
# GET /cars/1/edit
def edit
end
# POST /cars
# POST /cars.json
def create
#car = Car.new(car_params)
respond_to do |format|
if #car.save
format.html { redirect_to #car, notice: 'Car was successfully created.' }
format.json { render :show, status: :created, location: #car }
else
format.html { render :new }
format.json { render json: #car.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /cars/1
# PATCH/PUT /cars/1.json
def update
respond_to do |format|
if #car.update(car_params)
format.html { redirect_to #car, notice: 'Car was successfully updated.' }
format.json { render :show, status: :ok, location: #car }
else
format.html { render :edit }
format.json { render json: #car.errors, status: :unprocessable_entity }
end
end
end
# DELETE /cars/1
# DELETE /cars/1.json
def destroy
#car.destroy
respond_to do |format|
format.html { redirect_to cars_url, notice: 'Car was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_car
#car = Car.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def car_params
params.fetch(:car, {})
end
end
I'd greatly appreciate any insight into this issue. I've followed every bit of advice I've seen on the internet regarding layouts, controllers, and views, and I'm having no luck.
Thanks in advance!
Thanks to everyone who was trying to answer my question! It was a stumper, but I've discovered the problem:
After uninstalling and reinstalling rails a few times, I created a dummy rails project and generated a new scaffold "car." Upon running rails server and loading up localhost:3000/cars, the default layout was rendered as normal. Thinking that reinstalling rails had solved it, I then linked the dummy project to a remote github repository.
At this point, running rails server and loading localhost:3000/cars showed me the same error message as before. This made me believe that something about the remote repo was messing up my project, so I googled around for this error message and github.
I stumbled upon the following link which ultimately answered my question:
https://github.com/rails/rails/issues/18660
Turns out, one of the directories in my root path was capitalized, and that was throwing rails off right away. As soon as I renamed the capitalized directory to all lowercase, the app ran flawlessly.
I'm frustrated by ruby on rails' extremely opinionated conventions, and especially since this project is almost a week late due to such an esoteric mistake. But I'm over the moon to have it running smoothly now and I hope this may help someone else in the future.
Thanks again all!
In the routes.rb I have this nested resource
# OBSERVATIVE SESSIONS
resources :observative_sessions do
# OBSERVATIONS
resources :observations
end
In observations_controller.rb
def new
#observative_session = ObservativeSession.find(params[:observative_session_id])
#observation = Observation.new
#observation.observative_session_id = #observative_session.id
end
def create
#observative_session = ObservativeSession.find(params[:observative_session_id])
#observation = #observative_session.observations.build(observation_params)
#observation.user_id = current_user.id
respond_to do |format|
if #observation.save
format.html { redirect_to [#observative_session, #observation], notice: 'Observation was successfully created.' }
format.json { render :show, status: :created, location: #observation }
else
format.html { render :new }
format.json { render json: #observation.errors, status: :unprocessable_entity }
end
end
end
And in observations_controller_test.rb I set up both observation and observative session. The test of new works just fine.
class ObservationsControllerTest < ActionDispatch::IntegrationTest
include Devise::Test::IntegrationHelpers
setup do
#observative_session = observative_sessions(:one)
#observation = observations(:two)
sign_in users(:admin_user)
end
test "should get new" do
get new_observative_session_observation_path(#observative_session)
assert_response :success
end
test "should create observation" do
assert_difference('Observation.count') do
post observative_session_observation_path(#observative_session, #observation), params: { observation: { start_time: #observation.start_time, description: #observation.description, rating: #observation.rating, notes: #observation.notes, celestial_body_name: #observation.celestial_body_name, telescope_name: #observation.telescope_name, binocular_name: #observation.binocular_name, eyepiece_name: #observation.eyepiece_name, filter_name: #observation.filter_name, user_id: #observation.user_id, observative_session_id: #observation.observative_session_id }}
end
But this is the error I get in the creation test
test_should_create_observation
ActionController::RoutingError: No route matches [POST] "/observative_sessions/980190962/observations/298486374"
I can't understand what I'm doing wrong.
Thanks for your help.
When you say POST observation_session_observation_path(#observation_session, #observation) you are telling it to post to a url the has both :observation_session_id and an :id in the params, where the id is that of #obseravtion. However, POST paths for create actions don’t take that last id param (ostensibly you are creating a new record with that action).
Try dropping #observation from your path helper (and make sure you are using the correct create path: observation_session_observations_path(#observation_session).
You can do rake routes to see your routes in your terminal, or localhost:3000/rails/info/routes to see it in the browser.
I also see in your new action you are assigning the observation_session_id manually. I recommend you either do what you do later and call #obervation_session.observations.build, or Observation.new(observation_session: #observation_session). You should avoid setting ids like that.
I have an issue with rails with naming convention.
I have a database where i can't rename table so names are not in plural with inflector.
Today i wanted create model and controller for the table "wishlist__c" and the issue is here. I tried 3 times first by duplicating product model, controller.... and changing name then creating files myself and i still got the issue and then with rails g scaffold wishlist__c
The first error when i try to go to url:8080/wishlist__c/index :
Routing Error
uninitialized constant WishlistCController
wishlist__c_controller.rb exist. I notice after many test that the double '__' is a problem in rails. I rename it to wishlist_c_controller and the same with the model. the error message change to
--Solution: I forget to rename folder wishlist__c to wishlist_c in views folder
Thanks you all ! --
ActiveRecord::RecordNotFound in WishlistCController#show
Couldn't find WishlistC with 'id'=index
the code display under this is from wishlist_c_controller.rb:
def set_wishlist__c
#wishlist__c = ::WishlistC.find(params[:id])
end
How to solve it. I need to link my app to this table
edit:
Model wishlist_c.rb:
class WishlistC < ApplicationRecord
self.table_name = "wishlist__c"
end
wishlist_c_controller:
class WishlistCController < ApplicationController
before_action :set_wishlist__c, only: [:show, :edit, :update, :destroy]
# GET /wishlist__c
# GET /wishlist__c.json
def index
#wishlist__c = WishlistC.all
end
# GET /wishlist__c/1
# GET /wishlist__c/1.json
def show
end
# GET /wishlist__c/new
def new
#wishlist__c = WishlistC.new
end
# GET /wishlist__c/1/edit
def edit
end
# POST /wishlist__c
# POST /wishlist__c.json
def create
#wishlist__c = WishlistC.new(wishlist__c_params)
respond_to do |format|
if #wishlist__c.save
format.html { redirect_to #wishlist__c, notice: 'Wishlist c was successfully created.' }
format.json { render :show, status: :created, location: #wishlist__c }
else
format.html { render :new }
format.json { render json: #wishlist__c.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /wishlist__c/1
# PATCH/PUT /wishlist__c/1.json
def update
respond_to do |format|
if #wishlist__c.update(wishlist__c_params)
format.html { redirect_to #wishlist__c, notice: 'Wishlist c was successfully updated.' }
format.json { render :show, status: :ok, location: #wishlist__c }
else
format.html { render :edit }
format.json { render json: #wishlist__c.errors, status: :unprocessable_entity }
end
end
end
# DELETE /wishlist__c/1
# DELETE /wishlist__c/1.json
def destroy
#wishlist__c.destroy
respond_to do |format|
format.html { redirect_to wishlist__c_index_url, notice: 'Wishlist c was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_wishlist__c
#wishlist__c = WishlistC.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def wishlist__c_params
params.fetch(:wishlist__c, {})
end
end
Rails create RESTful routes based on controller and model. One of the routes would be get wishlist__c/:id which gets mapped to action show of WishlistCController. so when you hit the URL wishlist__c/index it takes index as the id.
If you want to render index page, create a route get wishlist__c/index and map it to index method of your controller. For the above to work you must hit the URL url:8080/wishlist__c/1 where 1 is your WishList ID. Replace it with values of id column of wishlist__c table.
Looking at your controller, you already have a route get wishlist__c/ mapped to the index method of your controller. So url:8080/wishlist__c/ should render index page for your model.
How do I add a route to a custom controller methods in Rails?
I have the following methods and want to call them via AJAX.
def w_destroy
render json: RHoliday.where(holiday_id: params[:holiday_id].to_s, group_id: params[:group_id].to_s).destroy
end
def w_create
#r_holiday = RHoliday.new(r_holiday_params)
respond_to do |format|
if #r_holiday.save
format.html { redirect_to #r_holiday, notice: 'RHoliday was successfully created.' }
format.json { render action: 'show', status: :created, location: #r_holiday }
else
format.html { render action: 'new' } format.json { render json: #r_holiday.errors, status: :unprocessable_entity }
end
end
end
The question is:
How do I do this? I think I need to edit my routes.rb but I don't know what to add there. I just used resources :r_holidays, but this just creates the default routes.
You can add extra routes out of resources scope in many different ways:
#config/routes.rb
resources :r_holidays do
post :w_create
delete :w_delete
end
Specifically, the resources call basically gives you Rails' standard 7 RESTful routes - you can use a code block to define extra routes as required. You should read the documentation to get some more ideas
I am creating a basic product landing page with Rails in which users can enter their email address to be notified when the product launches. (Yes, there are services/gems etc that could do this for me, but I am new to programming and want to build it myself to learn rails.)
On successful submit of the form, I would like to redirect to a custom '/thanks' page in which I thank users for their interest in the product (and also encourage them to complete a short survey.)
Currently, successful submits are displayed at "/invites/:id/" eg "invites/3" which I do not want since it exposes the number of invites that have been submitted. I would like to instead redirect all successful submits to a "/thanks" page.
I have attempted to research "rails custom URLs" but have not been able to find anything that works. The closest I was able to find was this Stackoverflow post on how to redirect with custom routes but did not fully understand the solution being recommended. I have also tried reading the Rails Guide on Routes but am new to this and did not see anything that I understood to allow for creating a custom URL.
I have placed my thanks message which I would like displayed on successful form submit in "views/invites/show.html.haml"
My Routes file
resources :invites
root :to => 'invites#new'
I tried inserting in routes.rb:
post "/:thanks" => "invites#show", :as => :thanks
But I don't know if this would work or how I would tell the controller to redirect to :thanks
My controller (basically vanilla rails, only relevant actions included here):
def show
#invite = Invite.find(params[:id])
show_path = "/thanks"
respond_to do |format|
format.html # show.html.erb
format.json { render json: #invite }
end
end
# GET /invites/new
# GET /invites/new.json
def new
#invite = Invite.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: #invite }
end
end
# POST /invites
# POST /invites.json
def create
#invite = Invite.new(params[:invite])
respond_to do |format|
if #invite.save
format.html { redirect_to #invite }
#format.js { render :action => 'create_success' }
format.json { render json: #invite, status: :created, location: #invite }
else
format.html { render action: "new" }
#format.js { render :action => 'create_fail' }
format.json { render json: #invite.errors, status: :unprocessable_entity }
end
end
end
It would seem as if creating a standard URL for displaying a confirmation would be relatively straightforward. Any advice on how to achieve this would be appreciated.
I guess you want to redirect after your create action, which is executed when the form is submitted.
Just add redirect_to in the following way:
def create
#invite = Invite.new(params[:invite])
if #invite.save
...
redirect_to '/thanks'
else
...
redirect_to new_invite_path # if you want to return to the form submission page on error
end
end
I omitted some of the code for brevity.
In your routes add:
get '/thanks', to: "invites#thanks"
Add the thanks action to your invites controller:
def thanks
# something here if needed
end
And create a thanks.html.erb page in app/views/invites.
I would do get "/thanks" => "invites#thanks" in routes.rb and then add this in your controller:
def thanks
end
Then add a file app/views/invites/thanks.html.erb with your thank-you content.
You could create a route like this:
resources :invites do
collection do
get 'thanks'
end
end
This will also create a path helper called thanks_invites_path.
It will be at the invites/thanks path, but if you want it to be on/thanks, you could just do as Jason mentioned:
get "/thanks" => "invites#thanks", :as => :thanks
The as part will generate a helper to access that page: thanks_path.
You would need a extra action in the controller called thanks, and put whatever info you need inside, and also you will need a additional view called thanks.html.erb
Since you want everybody to go to that page after a successful submit, in your create action you would have:
format.html { redirect_to thanks_invites_path} (or thanks_path), what ever you choose, when you name the route you can check it with rake routes if it's okay, and whatever rake routes says, just add _path at the end.