Ruby Error PagesController#main - ruby-on-rails

Question

Site link xxx.com/ru does not work
Error log:
Processing by PagesController#main as HTML
Parameters: {"locale"=>"ru"}
Rendered pages/main.html.erb within layouts/application (27.7ms)
Completed 500 Internal Server Error in 46ms
ActionView::Template::Error (undefined method `title' for nil:NilClass):
19:
20: <article class="hello">
21: <dl>
22: <dt><%= #page.title %></dt>
23: <dd><%=raw nl2br #page.content.html_safe %></dd>
24: </dl>
25: </article>
app/views/pages/main.html.erb:22:in `_app_views_pages_main_html_erb___1446230423625798988_17243439220'
If you go on the link "xxx.com/ru/pages#main", then it works
UPD: Now only works /ru, /en - does not work
Error:
Processing by PagesController#main as HTML
Parameters: {"locale"=>"en"}
Completed 404 Not Found in 1ms
ActiveRecord::RecordNotFound (Couldn't find Page with id=2):
app/controllers/pages_controller.rb:11:in `main'
What could be the problem? I beg you to help solve it, the site should be opened soon, and he is not all work, one programmer messed up code.
Controller file:
class PagesController < ApplicationController
before_filter :authenticate, :only => [:index, :show, :new, :edit, :create, :update, :destroy ]
caches_page :main, :about, :showreal, :projects, :contacts, :reject
caches_action :index, :show, :new
def main
#page = case I18n.locale.to_s
when 'ru'; Page.where("id =?", 4).first
when 'zh'; Page.where("id =?", 6).first
else Page.where("id =?", 6).first
end
base = 'app/assets/videos/'
#video = Dir.glob(File.join(base, 'main', 'video.*')).first.sub!(base,"")
#preview = Dir.glob(File.join(base, 'main', 'preview.*')).first.sub!(base,"")
end
def about
#body_class = 'leftbg'
#page = case I18n.locale.to_s
when 'ru'; Page.find(3)
when 'zh'; Page.find(5)
else Page.find(1)
end
end
def showreal
base = 'app/assets/videos/'
#video = Dir.glob(File.join(base, 'showreal', 'video.*')).first.sub!(base,"")
#preview = Dir.glob(File.join(base, 'showreal', 'preview.*')).first.sub!(base,"")
end
def projects
end
def contacts
#body_class = 'leftbg'
end
def sent
redirect_to :action => "reject" and return unless request.post?
#body_class = 'leftbg'
if request.POST.include? 'name'
#name = request.params['name']
end
if request.POST.include? 'email'
#email = request.params['email']
end
if request.POST.include? 'phone'
#phone = request.params['phone']
end
if request.POST.include? 'message'
#message = request.params['message']
end
if ['name','email','phone','message'].all? {|i| request.POST.include?(i)}
ContactMailer.contacts_email(#name,#email,#phone,#message).deliver
else
flash[:error] = 'You must complete all fields!'
return render :action => "contacts"
end
end
def reject
#body_class = 'leftbg'
end
# GET /pages
# GET /pages.json
def index
#pages = Page.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: #pages }
end
end
# GET /pages/1
# GET /pages/1.json
def show
#page = Page.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: #page }
end
end
# GET /pages/new
# GET /pages/new.json
def new
#page = Page.new
expire_page :action => [:main, :about]
expire_action :action => [:index, :show]
respond_to do |format|
format.html # new.html.erb
format.json { render json: #page }
end
end
# GET /pages/1/edit
def edit
#page = Page.find(params[:id])
end
# POST /pages
# POST /pages.json
def create
#page = Page.new(params[:page])
respond_to do |format|
if #page.save
format.html { redirect_to #page, notice: 'Page was successfully created.' }
format.json { render json: #page, status: :created, location: #page }
else
format.html { render action: "new" }
format.json { render json: #page.errors, status: :unprocessable_entity }
end
end
end
# PUT /pages/1
# PUT /pages/1.json
def update
#page = Page.find(params[:id])
expire_page :action => [:main, :about]
expire_action :action => [:index, :show]
respond_to do |format|
if #page.update_attributes(params[:page])
format.html { redirect_to #page, notice: 'Page was successfully updated.' }
format.json { head :ok }
else
format.html { render action: "edit" }
format.json { render json: #page.errors, status: :unprocessable_entity }
end
end
end
# DELETE /pages/1
# DELETE /pages/1.json
def destroy
#page = Page.find(params[:id])
#page.destroy
expire_page :action => [:main, :about]
expire_action :action => [:index, :show]
respond_to do |format|
format.html { redirect_to pages_url }
format.json { head :ok }
end
end
end

Answer 1

I believe #page is nil, so please try:
<%= #page.try(:title) %>
or:
<dt><%= #page.title if #page.present?%></dt>
<dt><%= raw nl2br #page.content.html_safe if #page.content.present? if #page.present? %></dt>
or, in the controller's action, you can write it like:
if #page.blank?
flash[:error] = 'Page not found.'
redirect_to root_path
end
As per the controller code, Please modify the case block.
def main
##page = case I18n.locale.to_s
# when 'ru'; Page.where("id =?", 4).first
# when 'zh'; Page.where("id =?", 6).first
# else Page.where("id =?", 6).first
#end
page_id = (I18n.locale.to_s == 'ru') ? 4 : 6
#page = Page.where(id: page_id).first
base = 'app/assets/videos/'
#video = Dir.glob(File.join(base, 'main', 'video.*')).first.sub!(base,"")
#preview = Dir.glob(File.join(base, 'main', 'preview.*')).first.sub!(base,"")
end