字段無效時不顯示共享的錯誤消息

Question

我是Ruby on Rails的新手，並且遇到了在窗體上不顯示錯誤消息的問題。我一直堅持這幾天，我已經嘗試了幾乎所有的解決方案/建議，我已經看到這個錯誤，但我一直無法使它工作。我必須形成一個爲用戶和一個爲綠色。它們都使用部分相同的共享消息，並且當輸入無效時，用戶窗體顯示錯誤消息，但綠色窗體不顯示錯誤消息。

綠色形式（在greenmetrics顯示查看）：

<%=form_for(@green) do |f| %> 
    <%= render partial: 'shared/error_messages', object: f.object %> 
     <div class="form-group"> 
      <div class="col-xs-2"><legend> Add new metrics:</legend></div> 

      <div class="col-xs-2 "> 
     <%= f.number_field :number, class: 'form-control', placeholder: "Green number" %> 
      </div> 
     </div> 
     <div class="form-group"> 
      <div class="col-xs-2 "> 
     <%= f.number_field :speed, class: 'form-control', placeholder: "Green speed", :step => 'any' %> 
     </div> 
     </div> 
     <div class="form-group"> 
      <div class="col-xs-2 "> 
     <%= f.number_field :firmness, class: 'form-control', placeholder: "Green firmness", :step => 'any' %> 
     </div> 
     </div> 
     <div class="form-group"> 
      <div class="col-xs-2 "> 
     <%= f.date_field :measure_date, class: 'form-control', placeholder: "Date of measurement" %> 
     </div> 
     </div 
     <div class="form-group"> 
     <div class="col-xs-1 "> 
     <%= f.submit "Submit", class: "btn btn-primary" %> 
     </div> 
     </div 

    </div> 

<% end %> 

用戶形成：

<% provide(:title, 'Register') %> 
<h1>Sign up</h1> 

<div class="row"> 
    <div class="col-md-6 col-md-offset-3"> 
    <%= form_for(@user) do |f| %> 
     <%= render 'shared/error_messages', object: f.object %> 

     <%= f.label :first_name %> 
     <%= f.text_field :firstname, class: 'form-control' %> 

     <%= f.label :last_name %> 
     <%= f.text_field :lastname, class: 'form-control' %> 

     <%= f.label :golf_course %> 
     <%= f.text_field :golf_course, class: 'form-control' %> 

     <%= f.label :email %> 
     <%= f.email_field :email, class: 'form-control' %> 

     <%= f.label :username %> 
     <%= f.text_field :username, class: 'form-control' %> 

     <%= f.label :password %> 
     <%= f.password_field :password, class: 'form-control' %> 

     <%= f.label :password_confirmation, "Password Confirmation" %> 
     <%= f.password_field :password_confirmation, class: 'form-control' %> 

     <%= f.submit "Create my account", class: "btn btn-primary" %> 
     <% end %> 
     </div> 
    </div> 

共用消息偏

​​

綠色模型

class Green < ActiveRecord::Base 
    belongs_to :user 
    default_scope -> { order(measure_date: :desc, number: :asc) } 
    validates :user_id, presence: true 
    validates :number, presence: true 
    validates :speed, presence: true 
    validates :firmness, presence: true 
    validates :measure_date, presence: true 

end 

用戶模型：

class User < ActiveRecord::Base 
    has_many :greens, dependent: :destroy 

    before_save { self.username = username.downcase} 
    before_save { self.email = email.downcase} 
    validates :firstname, presence: true, length: { maximum: 50 } 
    validates :lastname, presence: true, length: { maximum: 50 } 
    VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i 
    validates :email, presence: true, length: { maximum: 255 }, 
        format: { with: VALID_EMAIL_REGEX } 
        #,uniqueness: { case_sensitive: false} 
    validates :golf_course, presence: true, length: { maximum: 50 } 
    validates :username, presence: true, length: { maximum: 25 }, 
        uniqueness: { case_sensitive: false} 
    has_secure_password 
    validates :password, length: {minimum: 6} 

    # Returns the hash digest of the given string. 
    def User.digest(string) 
    cost = ActiveModel::SecurePassword.min_cost ? BCrypt::Engine::MIN_COST : 
                BCrypt::Engine.cost 
    BCrypt::Password.create(string, cost: cost) 
    end 

Controller 

class UsersController < ApplicationController 

    def show 
    @user = User.find(params[:id])  
    @greens = @user.greens 
    end 



    def greenmetrics 
     @user = current_user 
     @greens = @user.greens 
     @green = current_user.greens.build if logged_in? 
end 

綠黨控制器：

def create 
    @user = current_user 
    @green = current_user.greens.build(green_params) 
     if @green.save 
     flash[:success] = "Green metrics saved!" 
     @greens = @user.greens 
     redirect_to (:back) 
     else 
     flash[:danger] = "Please verify that all data is valid" 
     redirect_to (:back) 
     end 
    end 

我因爲沒有得到從顯示驗證錯誤消息添加閃光危險......

在此先感謝您的幫助。

安德烈

Answer 1

一個新的綠色將永遠不會有任何錯誤，因爲它並沒有被證實。

Answer 2

我想通了什麼是錯的，我錯過了每個領域的定義爲類：'form-control'。一旦我將其添加到表單並重新呈現，如果保存不成功，就會顯示錯誤消息。

更新形式：

<%=form_for(@green, :url => greenmetrics_path, :html => {:method => :post}) do |f| %> 
    <%= render 'shared/error_messages', object: f.object %> 
     <section> 
     <div class ="col-xs-2"><legend> Metrics for: </legend> </div> 
     <div class ="col-xs-2"><%= f.date_field :measure_date, value: @date %></div> 
     </section> 
    <section> 
     <div class="form-group"> 
      <div class="col-xs-2"><legend> Add metrics:</legend></div> 
      <div class="col-xs-2 "> <%= f.number_field :number, placeholder: "Green number", class: 'form-control' %> </div> 
      <div class="col-xs-2 "> <%= f.number_field :speed, placeholder: "Green speed", class: 'form-control', :step => 'any' %> </div> 
      <div class="col-xs-2 "> <%= f.number_field :firmness, placeholder: "Green firmness", class: 'form-control', :step => 'any' %> </div> 
      <div class="col-xs-2 "> <%= f.number_field :moisture, placeholder: "Green moisture", class: 'form-control', :step => 'any' %> </div> 
      <div class= "col-xs-1"> <%= f.submit "Add", class: "btn btn-primary" %> </div> 
     </div> 
    </section> 

<% end %> 

更新控制器：

def create 
    @user = current_user 
    @green = current_user.greens.build(green_params) 
     if @green.save 
     flash[:success] = "Green metrics saved!" 
     @greens = @user.greens 
     @measure_date = green_params[:measure_date] 
     redirect_to greenmetrics_path(:date => @measure_date) 
     else 
     render 'greenmetrics' 
     #flash[:danger] = "Please verify that all data is valid" 
     #redirect_to (:back) 
     end 

    end