Question

我正在遵循此tutorial，并设置了所需的内容，但是即使我的网络标头在发布时得到了参数，我似乎也无法获得参数。

我基本上是在尝试使用axlsx gem来下载xlsx。在控制器的这一行中，我需要传递参数：

@records = Report.get_producer_clients(params[:producer_id])

下载excel文件效果很好，但是我尝试在第一行打印@records，但没有显示任何内容。

谁能告诉我我错过了什么？

以下是我的代码段： Report.rb（模型）

def self.generate_client(id)
  client = Array.new
  client << get_cinfo(id) << get_caddress(id) << get_cpolicies(id) << get_ccontactinfo(id)
  return client 
end

def self.get_producer_clients(id)
   clients = Array.new
   Request.records(id).each do |client|
     clients << generate_client(client)
   end
  return clients
end

Reports_Controller.rb

def generate_clients
@report = Report.new(report_params)
@id =  params[:producer_id]
@report.queue_status = "Completed"
@report.created_by = current_user.id

respond_to do |format|
  if @report.save 
    if @report.report_type == "Producer Clients"
      @records = Report.get_producer_clients(params[:producer_id])
    end

    format.html {
      if @report.batch_generate
        outstrio = StringIO.new
        @report.update_attribute(:date_start, DateTime.now)
        p = render_to_string handlers: [:axlsx], formats: [:xlsx], template: "reports/create_clients"
        outstrio.write(p)
        @report.update_attribute(:date_end, DateTime.now)
        send_data outstrio.string, filename: "#{DateTime.now.to_date} #{@report.report_name}.xlsx"
      end
    }
    format.json { render :show, status: :created, location: @report }
  else
    @report.errors.each do |err|
    puts err.full_message
  end
    format.html { redirect_to :back, alert: 'Both dates must be filled up.' }
    format.json { render json: @report.errors, status: :unprocessable_entity }
  end
end

def report_params
  params.require(:report).permit(:from_due_date, :to_due_date, :team_id, :report_type, :report_for, :survey_id, :individual_id, :team_id, :group_id, :user_id, :producer_id, :batch_generate, :queue_status)
end

_clients_form.html.haml

= simple_form_for @report , url:generate_clients_reports_path do |f|
  = f.error_notification
  .form-inputs

.form-group.col-md-12
  = f.input :producer_selected, :url => autocomplete_producer_search_string_requests_path, :as => :autocomplete, :wrapper => :field_multi8, :label_html => { :class => "col-md-2 text-right" }, :input_html => { :class => "form-control" }, :id_element => "#report_producer_id", :label => "Producer :", :placeholder => "Find Producer", :update_elements => {}, :autofocus => true
  = f.input_field :producer_id, :as => :hidden
.form-actions
.form-group.col-sm-12{style: "margin-top:20px"}
  .col-sm-9
  .col-sm-2
    = f.submit "Generate", class: "btn btn-new btn-block"

routes.rb

resources :reports do
collection do
  post :generate_clients
  get :clients_list
  get :clients_new
end
member do 
  get :download
  patch :on_hold
  patch :activate
  patch :cancel
end
end

Answer 1

您致电Report.get_producer_clients(params[:producer_id])，但没有致电params[:producer_id]。您的表单发送到控制器params[:report][:producer_id]。 params用作哈希，而不是在儿童哈希中搜索密钥。

P.S。另外，不要给带有前缀“ get_”的方法命名。这在社区中是不被接受的。您无需在每个方法的最后一行写return，因此ruby总是返回该行。首选使用长度小于10行的方法，其他方法重写为两个或多个方法。尝试Rubocop或类似的宝石。因此，您的模型方法如下所示：

def self.generate_client(id)
  [cinfo(id), caddress(id), cpolicies(id), ccontactinfo(id)] #use Hash instead Array
end

def self.producer_clients(id)
  Request.records(id).each_with_object([]) do |client, clients|
    clients << generate_client(client)
  end
end

Answer 2

在您的控制器中，您不应该执行Report.get_producer_clients(report_params[:producer_id])吗？

编辑：
请参阅有关强参数的文档：
http://edgeguides.rubyonrails.org/action_controller_overview.html#strong-parameters

Rails无法将参数从表单传递/访问控制器

2 个答案: