print index table with 大虾 ruby on rails

Question

我在尝试在我的应用程序索引中打印搜索生成的数组时遇到问题。这是我的代码：

约会控制器（索引操作）：

def index
  @appointments = Appointment.search(params[:search])
  respond_to do |format|
    format.html
    format.pdf do
      pdf = AppointmentsPdf.new(@appointments)
      send_data pdf.render, filename: "citas_del_dia",
                                type: "application/pdf",
                         disposition: "inline"
    end
  end
end

索引视图：

<%= form_tag @appointments_path, :method => 'get', :id => "appointments_search" do %>
    <%= date_field_tag :search, params[:search] %>
    <%= submit_tag "search date", :name => nil %>
<% end %>

<div><%= render 'appointments' %></div>


<%= link_to "Print appointments of the day",appointments_path(@appointments, :format => 'pdf'), target: "_blank" %>

还有我的大虾pdfclass:

class AppointmentsPdf < Prawn::Document
    def initialize(appointments)
        super(top_margin: 30, :page_layout => :landscape)
        @appointments = appointments
        #some code to fill the pdf.

现在的问题是，当我搜索特定日期时，它可以很好地呈现索引，但是当我想将该页面打印为 pdf 时，它什么也不打印，就好像搜索为 null 而不是 null 一样。我想我必须将搜索像参数一样传递给大虾 class 但我不知道在哪里或如何。

Answer 1

我通过 link 将搜索参数传递给这样的方法来解决它：

<%= link_to "appointments of the day", citas_del_dia_appointments_path(@appointments, :format => 'pdf', :search => params[:search]), target: "_blank" %>

现在它就像一个魅力

print index table with 大虾 ruby on rails

Print index table with prawn ruby on rails

ruby

search

prawn

params

ruby-on-rails-4