我想通过使用不同的ids Rails 3来访问DB中的数组，但是出现了以下错误。
错误：
NoMethodError in Payments#download_pdf
Showing C:/Site/swargadwara_puri1/app/views/payments/download_pdf.html.erb where line #110 raised:
undefined method `each' for #<PaymentVendor:0x329e9f8>
Extracted source (around line #110):
107: <td style="width:50%; border-right: 1px solid black;">Item</td>
108: <td style="width:20%; text-align:right; border-right: 1px solid black;">Amount</td>
109: </tr>
110: <% @pdf_vendor_details.each do |details| %>
111: <% @count=@count+1 %>
112: <tr style="border: 1px solid black;">
113: <td style="border-right: 1px solid black;"><%= @count %></td>
我的其他代码文件如下所示。
payments_controller.rb：
class PaymentsController < ApplicationController
require "prawn/table"
require "prawn"
def payment
@payment=Vendor.new
@add_payment=AddPayment.new
respond_to do |format|
format.html
format.js
end
end
def check_type
if params[:commit]=="submit"
@vendor_type = PaymentVendor.where(:v_name => params[:v_name]).map{|v|[v.v_catagory ,v.Receipt_No]}
#@vendor_type = PaymentVendor.where(:v_name => params[:v_name]).pluck(:v_catagory)
@output=[]
#@result=[]
@r_no=[]
@vendor_type.each do |i|
if i.first == params[:payment][:s_catagory]
@output << i[1]
end
end
@output.each do |o|
@r_no << o
@result = PaymentVendor.where(:Receipt_No => @r_no,:v_catagory => params[:payment][:s_catagory],:v_name => params[:v_name],:v_status => "No" )
end
#puts "#{val} => #{index}"
#puts output1[index]
#@result = PaymentVendor.where(:Receipt_No => @output[index],:v_catagory => params[:payment][:s_catagory],:v_name => params[:v_name] )
else
@v_name=Vendor.where(:s_catagory => params[:payment][:s_catagory] ).pluck(:v_name)
end
end
def add_payment
if params[:commit]
#params[:details] == '1' ? remember : forget
@userid=params[:deatils].collect{|id| id.to_i} if params[:deatils]
#@userid=[]
puts "id is #{@userid}"
@info=0
params[:infos].each do |info|
@info=@info+info.to_i
end
@total_amount=params[:deatils]
@total=0
@count=0
@delet_id=[]
params[:deatils].each do |id|
@delet_id << id
@amount=PaymentVendor.find(id)
@total=@total+@amount.v_amount.to_i
@count=@count+1
end
if @total
@outstanding= @info-@total
if params[:add_payment][:p_catagory]=="Cash"
@add_payment=AddPayment.create(:p_catagory => params[:add_payment][:p_catagory],:paid_amount => @total,:total_claim => @count,:outstanding => @outstanding )
if @add_payment
@userid << @add_payment.id
@delet_id.each do |i|
@del_id=PaymentVendor.find(i)
@del_id.update_attributes(:v_status => "Yes")
end
@abc=true
end
end
if params[:add_payment][:p_catagory]=="Cheque"
@add_payment=AddPayment.create(:p_catagory => params[:add_payment][:p_catagory],:paid_amount => @total,:total_claim => @count,:chk_details => params[:chk_details],:chk_no => params[:chk_no],:outstanding => @outstanding )
@userid << @add_payment.id
if @add_payment
@delet_id.each do |i|
@del_id=PaymentVendor.find(i)
@del_id.update_attributes(:v_status => "Yes")
end
@abc=true
end
end
end
else
if params[:add_payment][:p_catagory]=="Cheque"
@chk=true
else
@Cash=true
end
end
end
def download_pdf
@all_userid=params[:all_id]
#puts "all ids are #{@all_userid}"
#puts "rest ids are #{@all_userid-[@all_userid.last]}"
@rest_ids=@all_userid-[@all_userid.last]
@pdf_payment_result=AddPayment.find(@all_userid.last)
@rest_ids.each do |ids|
@count=0
@pdf_vendor_details = PaymentVendor.find(ids)
end
puts "pdf vendor details #{@pdf_vendor_details}"
@pdf_address=Vendor.where(:v_name => @pdf_vendor_details.v_name , :s_catagory => @pdf_vendor_details.v_catagory ).pluck(:v_address)
@pdf_name=" #{Time.now.strftime("%d%m%Y%H%M%S") + '_' + @pdf_vendor_details.v_name + '_' + @pdf_vendor_details.v_catagory}.pdf "
pdf = render_to_string(pdf: "test.pdf", template: "payments/download_pdf.html.erb", encoding: "UTF-8", layout: 'application')
send_data pdf ,:disposition => 'inline', filename: 'something.pdf', :type => 'application/pdf',:page_height => 'A2'
save_path = Rails.root.join('pdfs', @pdf_name)
File.open(save_path, 'wb') do |file|
file << pdf
end
end
end
download_pdf.html.erb：
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="myModalLabel">Payment Advice</h4>
</div>
<div class="modal-body">
<div class="bgcolorwhite">
<table class="table">
<tr>
<th style="width: 50%; text-align:left;">
<div class="pull-left"><%= wicked_pdf_image_tag 'odishalogo.png',:border => "0",:name => "odishagovtlogo",:style => "width:60px; height:60px;" %></div>
<div class="pull-left" style="padding:14px 0px 0px 10px;">Swargadwar, Puri Municipality <br />
Government of Odisha</div>
<div class="clearfix"></div>
</th>
<th style="width:20%;"></th>
<th style="width: 30%; text-align:left; vertical-align: top;">Date : <%= Date.today.to_s %><br />
Bill No.: <%= rand(10000) %> </th>
</tr>
<tr>
<td colspan="3">
<strong>Vendor Name</strong> :<%= @pdf_vendor_details.v_name %><br>
<strong>Address</strong> : <%= @pdf_address %>
</td>
</tr>
<tr>
<td colspan="3">
<table style="border: 1px solid #000000; width:100%;">
<tr style="border: 1px solid #000000; background-color:#7878C3; color:#FFF;">
<td style="width:10%; border-right: 1px solid #000000;">Sl. No</td>
<td style="width:20%; border-right: 1px solid black;">Receipt No</td>
<td style="width:50%; border-right: 1px solid black;">Item</td>
<td style="width:20%; text-align:right; border-right: 1px solid black;">Amount</td>
</tr>
<% @pdf_vendor_details.each do |details| %>
<% @count=@count+1 %>
<tr style="border: 1px solid black;">
<td style="border-right: 1px solid black;"><%= @count %></td>
<td style="border-right: 1px solid black;"><%= details.Receipt_No %></td>
<td style="border-right: 1px solid black;"><%= details.v_catagory %></td>
<td style="text-align:right; border-right: 1px solid black;"><i class="fa fa-rupee"></i><%= details.v_amount %></td>
</tr>
<% end %>
<tr>
<td colspan="2" style="vertical-align: top;"><strong>Note :</strong>Thanks for your business<br />
<% if @pdf_payment_result.p_catagory== 'Cash' %>
<strong>Payment Mode :</strong><%= @pdf_payment_result.p_catagory %><br />
<% end %>
<% if @pdf_payment_result.p_catagory== 'Cheque' %>
<strong>Payment Mode :</strong><%= @pdf_payment_result.p_catagory %><br />
<strong>Cheque No :</strong> <%= @pdf_payment_result.chk_no %>, <%= @pdf_payment_result.chk_details %>
<% end %>
</td>
<td style="text-align: right;">Total :<br /> Paid :<br /> Outstanding :<br /> Due Payment :<br /> Gross Total : </td>
<td style="text-align: right;"><i class="fa fa-rupee"></i> <%= @pdf_payment_result.paid_amount.to_s.to_d + @pdf_payment_result.outstanding.to_s.to_d %><br /><i class="fa fa-rupee"></i><%= @pdf_payment_result.paid_amount %><br /><i class="fa fa-rupee"></i> <%= @pdf_payment_result.outstanding %><br /><i class="fa fa-rupee"></i> 120<br /><i class="fa fa-rupee"></i> 920</td>
</tr>
</table>
</td>
</tr>
<tr>
<td style="text-align:center;">
<div style="height:70px;"> </div><br />
<span style="border-top:1px solid #000;">Puri Municipality</span>
</td>
<td></td>
<td style="text-align:center;">
<div style="height:70px;"> </div><br />
<span style="border-top:1px solid #000;">Paid By</span>
</td>
</tr>
</table>
</div>
</div>
</div>
total_paymentdetails.html.erb：
<table class="table table-bordered">
<colgroup>
<col class="col-md-1 col-sm-1">
<col class="col-md-3 col-sm-3">
<col class="col-md-2 col-sm-2">
<col class="col-md-2 col-sm-2">
<col class="col-md-2 col-sm-2">
<col class="col-md-2 col-sm-2">
</colgroup>
<thead>
<tr>
<th class="text-center">Sl. No</th>
<th class="text-center">Date</th>
<th class="text-center">Total Claim</th>
<th class="text-center">Paid</th>
<th class="text-center">Outstanding</th>
<th class="text-center">Payment Advice</th>
</tr>
</thead>
<tbody>
<tr>
<td class="text-center">1</td>
<td class="text-center"><%= @add_payment.created_at %></td>
<td class="text-center"><%= @add_payment.total_claim %></td>
<td class="text-center"><i class="fa fa-rupee"></i><%= @add_payment.paid_amount %></td>
<td class="text-center"><i class="fa fa-rupee"></i><%= @outstanding %></td>
<td class="text-center">
<div class="btn-group">
<%= link_to "Download Pdf",payments_path(:format => "pdf",all_id: @userid ),:target => "_blank",method: :put %>
</div>
<div class="btn-group">
<a href="javascript:void(0)" title="" class="btn btn-xs btn-danger">
<i class="fa fa-download"></i>
</a>
</div>
</td>
</tr>
</tbody>
</table>
请检查download_pdf方法，此处@pdf_vendor_details变量应包含使用不同ID的记录数组。但不会发生这种情况。请帮我解决此错误。
答案 0 :(得分：0)
试试这个：
<%= link_to "Download Pdf",payments_path(:format => "pdf",:all_id => @userid.to_s),:target => "_blank",method: :put %>