Ruby on Rails: New post not saving on the blog - ruby-on-rails

Question

I'm working on an exercise, creating a blog with ruby on rails. I have the form ready to post an article, but once I click on the submit button, I am redirected to the homepage but the article doesn't save. Here is the following code
class ArticlesController < ApplicationController
def index
#articles = Article.paginate(:page => params[:page], per_page: 5).order('created_at DESC')
end
def show
#article = Article.find(params[:id])
end
def new
#article = Article.new
end
def create
#article = Article.new(title: params.permit[:title], body: params.permit[:body])
if #article.save
redirect_to articles, :notice => "Your post has been saved"
else
render :create
end
end
end
Here is the view create.html.haml
.container
.row
.col-xs-9-
.panel-title
%h2 Ecrivez votre article
= form_for #article do |f|
= f.text_field :title
= f.text_area :body, size: "60x12"
= f.submit "Publier"
Then the route.rb, I don't know if it can help
TP2::Application.routes.draw do
resources :articles, only: [:index]
get 'articles' => 'articles#index'
get 'articles/:id' => 'articles#show'
get 'articles/new'
get 'post' => 'articles#create'
post 'articles' => 'articles#index'
And to finish here is what the console show when I try to post an article
Started GET "/post" for 127.0.0.1 at 2016-04-10 14:24:56 +0200
Processing by ArticlesController#create as HTML
(0.2ms) BEGIN
(0.2ms) ROLLBACK
Rendered articles/create.html.haml within layouts/application (1.4ms)
Completed 200 OK in 9ms (Views: 4.9ms | ActiveRecord: 0.4ms)
Started POST "/articles" for 127.0.0.1 at 2016-04-10 14:25:10 +0200
Processing by ArticlesController#index as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"FMQmKvZ1t98ZE21VaiBQhm0jKJ9x9BwkXFbh4obfi3Qea0Zax5dgGirfpgcAiQA464GMD2+Qv/eGYrmvEoTZBQ==", "article"=>{"title"=>"Post", "body"=>"New Article test"}, "commit"=>"Publier"}
Article Load (0.6ms) SELECT "articles".* FROM "articles" ORDER BY created_at DESC LIMIT 5 OFFSET 0
(0.4ms) SELECT COUNT(*) FROM "articles"
Rendered articles/index.html.haml within layouts/application (3.4ms)
Completed 200 OK in 7ms (Views: 5.3ms | ActiveRecord: 1.0ms)
I don't understand why the new article won't save. Does anyone understand why ?

Answer 1

I would simplify the routes:
Rails.application.routes.draw do
root to: 'articles#index' # or where you want for the first page
resources :articles #will give you the correct path and verbs
end
And the articles_controller.rb
class ArticlesController < ApplicationController
...
def create
#article = Article.new(article_params)
respond_to do |format|
if #article.save
format.html { redirect_to #article, notice: "Article created!" }
else
format.html { render action: 'new' }
end
end
end
private
def article_params
params.require(:article).permit(:title, :body)
end
end

Answer 2

Because you are learning new stuff, this is a way you should use to debug your code:
put a binding.pry (a breakpoint) on the line before #article.save (or use another debugger, you can find it on Github)
reload your page, input the fields and click Save
go to the rails console, issue #article.save on the console (or #article.valid?), it should return false
puts #article.errors, so you can what are the validation issues
Good luck :)