提交表单后，Rails 5 Wicked-pdf在新窗口中打开pdf

如何解决提交表单后，Rails 5 Wicked-pdf在新窗口中打开pdf

我创建了一种表单，可以通过单击按钮将数据保存在两个不同的表中，现在可以将数据保存到两个不同的表中。

使用邪恶的PDF创建pdf。

现在我想要当用户单击preview按钮时，然后我想渲染我在create动作中渲染的模板。当用户单击预览按钮时，我无法打开预览pdf。

index.html.erb

<%= form_with(model: @invoice,:html => {:id => 'invoice-form-validation'},url: [@payment_milestone,@invoice],local: true) do |form| %>
  <div>
    <%= form.submit ' Preview Invoice',name: 'preview_invoice_submit',:class=>"button secondary button-margin-top fa fa-eye" %>
    <%= form.submit :class=>"button primary button-margin-top fa fa-files-o",name: 'invoice_submit'%>
  </div>
<% end %>

invoices_controller.rb

  def index
    @invoices = @payment_milestone.invoices
    @invoice = Invoice.new
  end

  def show
    respond_to do |format|
      format.html
      format.json
      format.pdf {render template: 'invoices/services_report',pdf: "services_invoice"}
    end
  end

  def create

    invoice_model = params[:invoice_submit] ? Invoice : TempInvoice
    @invoice = invoice_model.new(invoice_params)

    respond_to do |format|
      if @invoice.save
        format.html { redirect_to project_financial_payment_milestone_invoices_path,notice: 'Invoice was successfully created.' } 
      else
        format.html { redirect_to project_financial_payment_milestone_invoices_path}
      end
    end
  end

解决方法

提交或表单使用提交按钮的名称设置参数。
因此，您可以测试点击的“提交”按钮并可以在预览时重定向：

def create
  invoice_model = params[:invoice_submit] ? Invoice : TempInvoice
  @invoice = invoice_model.new(invoice_params)
  
  if @invoice.save
    if params.has_key?(:preview_invoice_submit)
      redirect_to project_financial_payment_milestone_invoice_path(@invoice,format: :pdf)
    else
     redirect_to project_financial_payment_milestone_invoices_path,notice: 'Invoice was successfully created.'
    end
  else
    redirect_to project_financial_payment_milestone_invoices_path
  end
end

（猜测路径名）