模型驗證消息Rails 4表單錯誤沒有顯示

我有一個表單，允許用戶通過在逗號分隔的列表中添加電子郵件來邀請多個人。在我的「參與者」模型中，我打電話來驗證輸入電子郵件的唯一性（範圍由「project_id」）。在模型驗證中，它給出瞭解釋錯誤（消息）的地方，但是如果驗證失敗，我不能在我的表單上顯示該錯誤。

如果用戶輸入已經添加的人員的電子郵件，如何獲取錯誤消息進行呈現？模型驗證消息Rails 4表單錯誤沒有顯示

participant.rb

class Participant < ActiveRecord::Base 
    validates :email, uniqueness: {case_sensitive: false, scope: :project_id, message: "Looks like you\'ve already added this person."} 
end

participant_controller.rb

def new_participant 
    @new_participants = Participant.new 
    @participants = Participant.where(project_id: @project.id).includes(:user) 
    @template = Template.find(@project.template_id) 
    @address = Address.where(project_id: @project.id).first 
    @food = ProjectRestriction.where(project_id: @project.id) 
end 

def add_participant 
@added_by = User.find(current_user.id) 
@new_participants = params[:new_participants][:email].split(/,\s*/) 
@new_participants.each do |t| 
    newpart = Participant.new(:email => t, :project_id => @project.id, :level => 4, 
      :participant_cat_id => 2, :last_updated_by => current_user.id, :added_by => current_user.id, :status => 'unseen') 
     respond_to do |format| 
       if newpart.save 
       ProjectMailer.notify_recipient(newpart, @project, @added_by, @participant_invite).deliver_later 
       self.response_body = nil 
       redirect_to participants_path(p: @project.id, w: 'recipient') 
       else 
       format.html { redirect_to new_participant_path(p: @project.id)} 
       format.json { render json: @new_participants.errors, status: :unprocessable_entity } 
       end 
     end 
    end 
end

形式

<%= form_for :new_participants, url: add_participant_path(:p => @project.id), html: { :multipart => true, :class=> "form-horizontal", id: "basicForm" } do |f| %> 

    <% if @new_participants.errors.any? %> 

    <h2>OOPS!</h2> 
     <ul> 

     <% @new_participants.errors.full_messages.each do |msg| %> 
     <li><%= msg %></li> 
     <% end %> 
     </ul></div> 
<% end %> 

<div class="form-group "> 
<label class="form-label dk-aqua"> Email: <span class="asterisk">*</span></label> 
<%= f.text_field :email, :autofocus => true, :required => true, :maxlength => 55, :placeholder => 'Email(s)', :class => 'form-control' %> 
</div> 

<%= f.submit 'INVITE', :class => 'btn btn-aqua btn-lg btn-block', 
      :style => 'margin-bottom:-5px' %> 
<% end %>

來源

2015-05-12 NothingToSeeHere

你的主要問題是：

您正在爲請求中的每封電子郵件創建響應塊。 1個請求= 1個響應。
保存在@new_participants內存中的對象實際上並未保存。
在您的看法中，您正在對待@new_participants，就好像它在哪裏一個資源。

在命名路線，變量和操作時要注意多元化。

def add_participants 
    @added_by = User.find(current_user.id) 
    @new_participants = params[:new_participants][:email].split(/,\s*/) 

    @new_participants.map do |email| 
     newpart = Participant.new(
        :email => email, 
        :project_id => @project.id, 
        :level => 4, 
        :participant_cat_id => 2, 
        :last_updated_by => current_user.id, 
        :added_by => current_user.id, 
        :status => 'unseen' 
     ) 
     if newpart.save 
      ProjectMailer.notify_recipient(newpart, @project, @added_by, @participant_invite).deliver_later 
     end 
     new_part 
    end 

    @invalid = @new_participants.reject(&:valid?) 

    if @invalid.any? 
     respond_to do |format| 
      format.html { redirect_to new_participant_path(p: @project.id)} 
      format.json { render json: @new_participants.map(&:errors), status: :unprocessable_entity } 
     end 
    else 
     respond_to do |format| 
      redirect_to participants_path(p: @project.id, w: 'recipient') 
     end 
    end 
end

<ul> 
<% @new_participants.each |p| %> 
    <% p.errors.messages.each do |msg| %> 
     <li><%= msg %></li> 
    <% end if p.errors.any? %> 
<% end %> 
</ul>

來源

2015-05-13 01:42:29 max

模型驗證消息Rails 4表單錯誤沒有顯示

回答

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