How to convert html table to PDF using Rails 3 - ruby

Question

I am trying to generate one PDF file using Rails 3. I have a table with some values and i want to display these data in PDF. I have written some code which are explained below.
index.html.erb:
<h1>Choose the option</h1>
<p>
<%= link_to "new input",products_new_path %>
</p>
<table>
<tr>
<th>Product name</th>
<th>Product Catagory</th>
</tr>
<% #product.each do |p| %>
<tr>
<td><%= p.p_name %></td>
<td><%= p.p_catagory %></td>
</tr>
<% end %>
</table>
products_controller.rb:
class ProductsController < ApplicationController
def index
#product=Product.all
respond_to do |format|
format.html
format.pdf do
pdf = Prawn::Document.new
send_data pdf.render, filename: 'report.pdf', type: 'application/pdf'
end
end
end
def new
#product=Product.new
end
def create
#product=Product.new(params[:product])
if #product.save
flash[:notice]="Data submitted"
flash[:color]="valid"
redirect_to :action => "index"
else
flash[:alert]="Data could not finish"
flash[:color]="invalid"
render 'new'
end
end
end
Gemfile:
source 'https://rubygems.org'
gem 'rails', '3.2.19'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
gem 'sqlite3'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', :platforms => :ruby
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'
# To use Jbuilder templates for JSON
# gem 'jbuilder'
# Use unicorn as the app server
# gem 'unicorn'
# Deploy with Capistrano
# gem 'capistrano'
# To use debugger
# gem 'debugger'
gem 'prawn'
config/initializer/mime_type.rb
Mime::Type.register "application/pdf", :pdf
Please help me to resolve this issue and also let me to know how can i run app(e.g-localhost:3000/products.pdf) for getting this pdf file.

Answer 1

What I would do is to add this line to your Gemfile to generate a table with prawn :
gem 'prawn-table'
Make sure you are using these version :
bundle show
# * prawn (2.0.1)
# * prawn-table (0.2.1)
In your controller, if you want to generate the PDF file when index action is called you can add this into it :
def index
#products = Product.all
require "prawn/table"
require "prawn"
Prawn::Document.generate("test.pdf") do |pdf|
table_data = Array.new
table_data << ["Product name", "Product category"]
#products.each do |p|
table_data << [p.name, p.category]
end
pdf.table(table_data, :width => 500, :cell_style => { :inline_format => true })
end
end
You can add some html syntax if you want to it :
["<b>#{p.name}</b>", "<i>#{p.category}</i>"]
Here is the result :

Answer 2

#satya, I'll suggest you to use 'prawn' and 'prawn-table' gem.
Steps to create pdf is -
1: #create pdf object
pdf = Prawn::Document.new()
2: #assign the value in pdf object
pdf.text "To Date - #{extra_data[:to_date]}"
For more info you can watch this vedio -
http://railscasts.com/episodes/153-pdfs-with-prawn

Answer 3

#satya, use this- - > return send_data Product.get_product_report_runtime_pdf(input_data), type: :pdf, filename: "Units_report_#{Time.now.strftime("%Y%m%d%H%M%S")}.pdf" will return the run time created pdf and if you want html page as well then dont use return before send data.
Under Product model -> here I am returning the blank pdf, so use the required code whatever you want in your pdf.
def get_product_report_runtime_pdf
pdf = Prawn::Document.new
return pdf.render
end