ActionRecord Not Found. Couldn't find with id= - ruby-on-rails

Question

I'm using Caracal Gem to export a Docx file, the gem is generating the document normally. But when I try to print the contract data I get the error. It's probably some routing problem, I'm stuck in this two weeks and I'm almost giving up.
The error is Action Record Not Found Couldn't fid contrato with id=
Here is my code I highlighted the parts in the code.
Routes.rb
Rails.application.routes.draw do
get 'grayscale/index'
get 'contratos/page' HERE IS THE ROUTING
devise_for :users, path: '', path_names: {sign_in: 'login', sign_out: 'logout', sign_up: 'registrar'}
resources :contratos
root 'contratos#index'
get '/contrato_export' => 'contratos#export'
resources :contratos do
member do
# /contratos/:id/export
get 'export'
end
end
end
contratos_controller.rb
before_action :authenticate_user!
before_action :set_contrato, only: [:show, :edit, :update, :destroy, :export]
access all: [:show, :index], user: {except: [:destroy, :new, :create, :update, :edit]}, site_admin: :all
require './lib/generate_pdf'
def page
contrato = Contrato.find(params[:id])<---HERE IS THE PROBLEM!!!!!
Caracal::Document.save(Rails.root.join("public", "example.docx")) do |docx|
docx.style do
id 'Body'
name 'body'
font 'Times New Roman'
size 24
end
docx.h2 'Contrato'
docx.p do
style 'Body'
text 'Lorem ipsun dolor sit amet'
text contrato.day <--- HERE IS THE DATA THAT I WANT TO PRINT IN THE DOCX. (IN THE CONTRATO SHOW is #contrato.day, I WANT THAT DATE TO BE PRINTED.
end
end
path = File.join(Rails.root, "public")
send_file(File.join(path, "example.docx"))
end

Answer 1

You have a missing params
get 'contratos/:id/page', to: 'contratos#page'
#or
resources :contratos do
member do
get 'export' # /contratos/:id/export
get 'page' # add this!
end
end

Answer 2

That tutorial is just utter garbage. You can do the exact same thing (or at least what I think your trying to do) RESTfully without adding any additional routes just by using ActionController::MimeResponds:
class ContratosController < ApplicationController
# GET /contratos/1
# GET /contratos/1.pdf
# GET /contratos/1.docx
def show
respond_to do |format|
format.html {}
format.pdf { send_file Contratos::PdfConverter.call(#contrato) }
format.docx { send_file Contratos::XMLConverter.call(#contrato) }
end
end
end
The key here is keep your controller skinny. Controllers are notoriously hard to test.
We haven't actually declared Contratos::PdfConverter yet but this is one place where you could just use the service object pattern:
# app/services/base_service.rb
class BaseService
def self.call(*args, **kwargs, &block)
new(*args, kwargs, &block)
end
end
# app/services/contratos/docx_converter.rb
module Contratos
class DocxConverter < BaseService
# #return [Pathname]
def call(contrato)
path = Rails.root.join("public", "example.docx")
Caracal::Document.save(path) do |docx|
docx.style do
id 'Body'
name 'body'
font 'Times New Roman'
size 24
end
docx.h2 'Contrato'
docx.p do
style 'Body'
text 'Lorem ipsun dolor sit amet'
text contrato.day # ...
end
end
path
end
end
end
# app/services/contratos/pdf_converter.rb
module Contratos
class PdfConverter < BaseService
def call(contrato)
# generate PDF here
end
end
end
This lets you test the conversion separately and avoids turning your controller into a flaming garbage pile.