通过验证从另一个控制器视图创建

Question

我正在尝试从我的帐单显示中创建代理。我无法在表单上显示验证错误，我只能刷新它们。 我试图只用<button onclick="onClick ()">Click Me</button> ... onClick () { const kleuren = document.querySelector ( [mySelectorByIDorClass, etc.] ); console.log ( kleuren.checked ); } 来做表格，以渲染而不是重定向，以表格形式传递帐单ID ...但是我不明白。 如何创建代理并返回带有表单中验证错误的票据显示视图？

控制器

bills_Controler.rb

@agent

agents_controller.rb

def show
    @bill = Bill.find(params[:id])
    @agent = @bill.agent || Agent.new
    respond_to do |format|
      format.html 
      format.pdf do
        render pdf: @bill.to_filename
              end
      format.zip { send_zip }
    end
end

观看次数

_bill.html.erb

def create
    @agent = Agent.new
    @bill=Bill.find(params[:bill_id])

    if build_agent(agent_params).save
        flash[:notice] = t('agent.saved')
            redirect_to bill_path (params[:billid])
    else
        #flash[:error] = @agent.errors
        #render 'bills/show'
        redirect_to bill_path(@bill), :flash => { :error => @agent.errors.full_messages.join(', ') }
    end
end

_agents.html.erb

<%= render 'bills/show/agents'%>

模型

bill.rb

<%= simple_form_for [@bill, @agent] do |f| %>
    <%= f.input :name, wrapper_html: { class: 'medium' } %>
    <%= f.input :surname, wrapper_html: { class: 'medium' } %>
    <%= f.input :phone_number, wrapper_html: { class: 'medium' }  %>
    <%= f.button :submit, class: 'button btn-main btn btn-primary'%>
<%end%>

agent.rb

belongs_to :agent, inverse_of: :bills

路线

has_many :bills, inverse_of: :agents, dependent: :restrict_with_error
validates :name ,presence: true ....

Answer 1

为了在字段中显示错误，您需要对包含错误的同一对象进行render show操作：

def show
  # show action code goes here
end

def create
  @agent = Agent.new(agent_params)
  @bill = Bill.find(params[:bill_id])

  if @agent.save 
    # validation fails and  
    # the @agent object contains errors
    @bill.agent = @agent
    flash[:notice] = t('agent.saved')
    redirect_to bill_path(params[:bill_id])
  else
    render :new
    # because the new action contains a form
  end
end