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ruby-on-rails - Rails 无法从表单向控制器传递/访问参数

问题描述

我正在关注本教程，并设置了我需要的内容，但是即使我的网络标头在发布时获得了参数，我似乎也无法获得参数。

我基本上是在尝试使用 axlsx gem 制作下载的 xlsx。在我的控制器中，这一行，我需要传递参数：

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

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

谁能告诉我我错过了什么？

这是我的代码片段： Report.rb (Model)

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"

路线.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

标签： ruby-on-railsrubyruby-on-rails-4

解决方案

你打电话Report.get_producer_clients(params[:producer_id])，但没有params[:producer_id]。您的表单发送到控制器params[:report][:producer_id]。params作为散列工作，而不是在孩子的散列中搜索键。

PS 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。您不需要return在每个方法的最后一行写入，ruby 总是返回该行作为结果。更喜欢使用长度低于 10 行的方法，其他方法重写为两个或更多方法。试试 Rubocop 或类似的宝石。因此，您的模型方法可能如下所示：

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

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