Rails 应用程序中 gem package 的覆盖方法

Question

I am using the package and initialise it in my rails application in config/initializers/prawn_rails.rb with include PrawnRailsForms

I am trying to override a method to increase the font size of field.upcase with the code below

include PrawnRailsForms

DocumentExtensions.module_eval do
  def make_field_box(field)
    stroke_bounds
    bounds.add_left_padding 2
    move_down 2
    text field.upcase, size: 18
  end
end

But the font doesn't get affected in the pdf views even I restarted the server.

Answer 1

You need to do the monkey pathing here.

1. Create a prawn-rails-forms directory in lib directory.

2. Create a document_extensions.rb file inside prawn-rails-forms directory.

3. Add below code to the document_extensions.rb

    module PrawnRailsForms module DocumentExtensions private def make_field_box(field) stroke_bounds bounds.add_left_padding 2 move_down 2 text field.upcase, size: 8 end end end

4. Restart the server.

Extended

If you find still not working after restarting the server then

• Add config.autoload_paths += %W(#{config.root}/lib) to the config/application.rb OR
• Move prawn-rails-forms directory to the config/initializers

Please let me know if it works for you.