如何在Rails中使用Prawn生成pdf文件？

-1

Prawn::Document.generate("#{RAILS_ROOT}/public/pdf/generate.pdf") do              
    pdf.text "hello" 
end

但是当我去找/公/ PDF /文件夹中的文件，我不找任何文件。

那么我的这个控制器代码

def generate 
    respond_to do |format|                        
    format.pdf{ render :file => "#{RAILS_ROOT}/public/pdf/generate.pdf"} 
    end 
end

来源

2010-10-04 zealmurugan

这可能是别的东西，但提供的代码似乎并没有工作：

Prawn::Document.generate("x.pdf") do 
    pdf.text "Hello" 
end

给我

NameError: undefined local variable or method `pdf' for #<Prawn::Document:0x352b6e4> 
     from c:/ruby/lib/ruby/gems/1.8/gems/prawn-core-0.8.4/lib/prawn/graphics/color.rb:72:in `method_missing' 
     from (irb):3

你应该能够看到你的日志文件中是否有类似的东西。

我觉得不需要pdf.：

Prawn::Document.generate("x.pdf") do 
    text "Hello" 
end

来源

2010-10-04 12:14:37

如果您要使用pdf.text，那么应该是Prawn :: Document.generate（“x.pdf”）do | pdf | pdf.text“测试”结束 – verdure 2011-10-24 06:21:14

ruby - 1.9.3 
rails - 3.2 

way 1 

create new project in rails 

rails new prawn_sample 

you can find gem file inside project folder, add prawn gem. 

gem 'prawn' 
then bundle install 

now, install prawnto plugin 


rails plugin install [email protected]:forrest/prawnto.git 


For sample data to display, let’s create a Book model with title,author and description. 

rails generate scaffold book title:string author:string description:text 

then 

rake db:migrate 
now start the server and enter sample data's to test 
so, 
rails s 
localhost:3000/books 
here enter the required amount of data's 
next 

Let’s get started with something simple and add a pdf version of the show action. Open up the books controller and add format.pdf 

def show 
    @book = Book.find(params[:id]) 
    respond_to do |format| 
    format.html # show.html.erb 
    format.xml { render :xml => @book } 
    format.pdf { render :layout => false } 
    end 
end 

create the show.pdf.prawn file inside app/views/books. For now, lets have hello world 
pdf.text "Hello World!" 

visit 
http://localhost:3000/books/1 
http://localhost:3000/books/1.pdf 

you successfully generated PDF. 

Let’s make the view specific to the books. 
in show.pdf.prawn 

pdf.font "Helvetica" 
pdf.text "Book: #{@book.title}", :size => 16, :style => :bold, :spacing => 4 
pdf.text "Author: #{@book.author}", :spacing => 16 
pdf.text @book.description 

now you see some text with format specified above . Browse more for format you required. 

way 2 

Gemfile 

gem 'prawn' 

/config/initializers/mime_types.rb 

Mime::Type.register "application/pdf", :pdf 

AuditsController 

def show 
    @audit = Audit.find(params[:id]) 
    respond_to do |format| 
     format.html 
     format.pdf do 
      pdf = Prawn::Document.new 
      pdf.text "This is an audit." 
      send_data pdf.render, type: "application/pdf", disposition: "inline" 
     end 
     end 
end

来源

2013-12-24 13:45:04 praaveen

不知道你使用的是什么版本的虾，但这个工作对我来说：

pdf = Prawn::Document.new(background: img, :page_size => "LETTER", :page_layout => :landscape) 
    pdf.render_file File.join(Rails.root, "app/pdfs", "x.pdf")

我想你”重新丢失了实际创建该文件的pdf.render_file行。

来源

2014-09-28 00:25:30 andrewcockerham

如何在Rails中使用Prawn生成pdf文件？

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