Rails 4.2: Unable to add search functionality. - ruby-on-rails

Question

Trying to add simple search functionality to my app so anyone can search articles. After adding the code ,it does not display the search results on the index. But the url shows http://localhost:3000/articles?utf8=%E2%9C%93&search=hello&commit=Search
index.html.erb
<p>This is the articles placeholder</p>
<%= form_tag articles_path, :method => 'get' do %>
<%= text_field_tag :search, params[:search] %>
<%= submit_tag "Search" %>
<% end %>
<% #articles.each do |article| %>
<h2><%= link_to article.title, article %></h2>
<p>Published at
<%= article.created_at.strftime('%b %d, %Y') %>
</p>
<p>
<%= truncate(article.content, length: 200) %>
</p>
<% end %>
articles controller
class ArticlesController < ApplicationController
before_action :find_article, only: [:show, :edit, :update, :destroy]
before_action :authenticate_user!, except: [:index, :show]
def index
#articles = Article.search(params[:search])
#articles = Article.all.order("created_at DESC")
end
def new
#article = current_user.articles.build
end
def show
end
def create
#article = current_user.articles.build(article_params)
if #article.save
redirect_to #article
else
render 'new'
end
end
def edit
end
def update
if #article.update(article_params)
redirect_to #article
else
render 'edit'
end
end
def destroy
#article.destroy
redirect_to root_path
end
private
def article_params
params.require(:article).permit(:title, :content)
end
def find_article
#article = Article.find(params[:id])
end
end
article.rb
class Article < ActiveRecord::Base
belongs_to :user
def self.search(search)
if search
where(["name LIKE ?", "%#{search}%"])
else
all
end
end
end
rake routes
new_user_session GET /users/sign_in(.:format) devise/sessions#new
user_session POST /users/sign_in(.:format) devise/sessions#create
destroy_user_session DELETE /users/sign_out(.:format) devise/sessions#destroy
user_password POST /users/password(.:format) devise/passwords#create
new_user_password GET /users/password/new(.:format) devise/passwords#new
edit_user_password GET /users/password/edit(.:format) devise/passwords#edit
PATCH /users/password(.:format) devise/passwords#update
PUT /users/password(.:format) devise/passwords#update
cancel_user_registration GET /users/cancel(.:format) devise/registrations#cancel
user_registration POST /users(.:format) devise/registrations#create
new_user_registration GET /users/sign_up(.:format) devise/registrations#new
edit_user_registration GET /users/edit(.:format) devise/registrations#edit
PATCH /users(.:format) devise/registrations#update
PUT /users(.:format) devise/registrations#update
DELETE /users(.:format) devise/registrations#destroy
articles GET /articles(.:format) articles#index
POST /articles(.:format) articles#create
new_article GET /articles/new(.:format) articles#new
edit_article GET /articles/:id/edit(.:format) articles#edit
article GET /articles/:id(.:format) articles#show
PATCH /articles/:id(.:format) articles#update
PUT /articles/:id(.:format) articles#update
DELETE /articles/:id(.:format) articles#destroy
root GET / articles#index

Answer 1

You're overwrite the search by then calling Article.all.order("created_at DESC") and assigning that to the #articles variable
#articles = Article.search(params[:search])
#articles = Article.all.order("created_at DESC")
So you want
#articles = Article.search(params[:search]).order("created_at DESC")
because your search method will return all if the parameters aren't present anyway.