将params传递给控制器​​不工作

Question

我对RoR很新，所以我想通过做一些项目来学习。我目前正在研究的是为客户提供健身教练的应用程序。当我尝试为客户端创建新的评估时，似乎client_id参数未被传递给assessment_controller。 这是一行：

<%= link_to 'New assessment', new_assessment_path(client_id: @client.id), class: "btn btn-xs btn-success" %> 

错误：找不到'id'=

的客户端

然而，在新的评估视图中，在调试区域中我看到了：

--- !ruby/hash-with-ivars:ActionController::Parameters
elements:
  client_id: '1'
  controller: assessments
  action: new
ivars:
  :@permitted: false

当我点击“创建”时，会发生错误

assessment_controller：

 def create
   @assessment = Assessment.new(assessment_params)
   @assessment.client = Client.find(params[:client_id])
  respond_to do |format|
  if @assessment.save
    format.html { redirect_to @assessment, notice: 'Assessment was successfully created.' }
    format.json { render :show, status: :created, location: @assessment }
  else
    format.html { render :new }
    format.json { render json: @assessment.errors, status: :unprocessable_entity }
  end
end

端

Answer 1

我很确定您将new_assessment_path(client_id: @client.id)分配给新页面，并且在提交表单时，客户端ID不会传递给创建操作。有许多不同的解决方案。

<强> 1。溶液

<%= link_to 'New assessment', new_assessment_path(client_id: @client.id), class: "btn btn-xs btn-success" %>

#assestment _form.html.erb file
<%= f.hidden_field_tag 'client_id', @client_id %>

#assessments_controller:
def new
   @assessment = Assessment.new
   @client_id = params[:client_id]
end

def create
   @assessment = Assessment.new(assessment_params)
  respond_to do |format|
  if @assessment.save
    format.html { redirect_to @assessment, notice: 'Assessment was successfully created.' }
    format.json { render :show, status: :created, location: @assessment }
  else
    format.html { render :new }
    format.json { render json: @assessment.errors, status: :unprocessable_entity }
  end
end

#add :client_id
def assessment_params
   params.require(:registration).permit(..., :client_id)
end