Question

我有一个rails应用程序，用户提交表单来创建项目，然后重定向到他们刚刚创建的项目。

我遇到的问题是，如果所有字段都留空，或者甚至其中一个必填字段为空，那么数据仍然会被传递并创建一个新项目。

我已经使用required: true属性认为这将确保输入数据，然后没有输入数据，将发生错误。虽然这不起作用。

在config/initializaers/simple_form.rb文件中，config.browser_validations = true设置为true。

有人知道输入仍在传递的原因吗？

简单形式：

  <%= simple_form_for @item do |f| %>

  <%= f.collection_select :category_id, Category.all, :id, :name, {promt: "Choose a category" }, input_html: { class: " dropdown-toggle" } %>

  <%= f.input :name, label: "Your Name", required: true, error: 'Your name is required', input_html: { class: "form-control", maxlength: 30} %>

  <%= f.input :title, label: "Item Title", required: true, error: 'Item title is required', input_html: { class: "form-control", maxlength: 50 } %>

  <%= f.input :used?, as: :check_boxes, required: true, label: "Is Your Item Used?" %>

  <%= f.input :price, label: "Item Price", required: true, error: 'Price is required', input_html: { class: "form-control", :placeholder => "$" }  %>

  <%= f.input :description, label: "Item Description", input_html: { class: "form-control" } %>

  <%= f.input :email, label: "Email", required: true, error: 'Email is required', input_html: { class: "form-control", :placeholder => "user@email.com" } %>

  <%= f.input :phone, label: "Phone Number", input_html: { class: "form-control", :placeholder => "+61 --- --- ---", :value => "+61 " } %>

  <%= f.input :suburb, label: "Suburb", required: true, error: 'Suburb is required', input_html: { class: "form-control" } %>

  <%= f.input :image, label: "Upload An Image (Must be less than 2mb)" %>

  <%= f.button :submit %>

<% end %>

物品型号：

class Item < ActiveRecord::Base
belongs_to :category
belongs_to :user
end

物品管制员：

class ItemsController < ApplicationController
before_action :find_item, only: [:show, :edit, :update, :destroy]
before_filter :authenticate_user!, except: [:index, :show]

def show
end

def new
    @item = current_user.items.build
end

def create
    @item = current_user.items.build(items_params)

        if @item.save
            redirect_to @item
        else
            render "New"
        end
end

def edit
end

private

def items_params
    params.require(:item).permit(:name, :title, :price, :description, :used?, :email, :phone, :suburb, :category_id, :image, :search)
end

def find_item
    @item = Item.find(params[:id])
end
end

Answer 1

来自simple_form文档：

默认情况下，所有输入都是必需的。当表单对象存在时附加到其字段的验证，简单表单告诉必需和可选字段分开。出于性能原因，这种检测是跳过使用条件选项的验证，例如：if和：除非。

您可以为商品模型中的状态添加验证，例如validates :name, presence: true您不需要以这种方式为每个输入手动包含消息。

Answer 2

对于那些正在寻找简单的浏览器验证的人，如果未填写必填字段，则阻止用户提交。默认情况下，simple_form 关闭浏览器验证。

可以在配置文件中开启，如果没有配置文件，可以使用以下命令生成：

rails generate simple_form:install

config > 初始值设定项 > simple_form

# Tell browsers whether to use the native HTML5 validations (novalidate form option).
# These validations are enabled in SimpleForm's internal config but disabled by default
# in this configuration, which is recommended due to some quirks from different browsers.
# To stop SimpleForm from generating the novalidate option, enabling the HTML5 validations,
# change this configuration to true.

  config.browser_validations = true

Simple_form不验证输入

2 个答案: