Question

我目前正在制作一个租赁系统，我需要在这个系统中创建租借时间以及何时使用RoR返回租用物品。我已经将代码保存在数据库中，然后使用错误value required 2, got nil回滚。

以下是我的代码：

AcquiretimesController < ApplicationController

def create

    @item = Item.find(params[:item_id])

    @acquiretime = @item.acquiretimes.create(time_params)

    if @acquiretime.valid?
        flash[:success] = "You have successfully rented the item"
        redirect_to root_path
    else
        flash[:alert] = "Woops! Looks like there has been error. Please enter valid data."
        redirect_to root_path
    end
end

private

def time_params
    params.require(:acquiretime).permit(:required_time, :return_time)
end

我认为，我使用了以下内容：

<%= simple_form_for [current_item, @acquiretime] do |f| %>
    <div class = "add_item_form">            
        <%= f.input :required_time, as: :date, html5: true %>
        <%= f.input :return_time, as: :date, html5: true  %>
    </div>
    <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <%= f.submit 'Add Item', class: 'btn btn-primary' %>
    </div>
<% end %>

我的Acquiretime模型是：

class Acquiretime < ApplicationRecord belongs_to :item belongs_to :users validates :required_time, :return_time, presence: true end

对于物品，

class Item < ApplicationRecord belongs_to :user has_many :acquiretimes end

和用户，

class User < ApplicationRecord has_many :items has_one :acquiretime end

以下是我在控制台中的错误消息：

开始POST＆＃34; / items / 3 / acquiretimes＆＃34;对于127.0.0.1在2018-01-07 18:28:04 +0545   由AcquiretimesController处理#create as HTML     参数：{＆＃34; utf8＆＃34; =＆gt;＆＃34;✓＆＃34;，＆＃34; authenticity_token＆＃34; =＆gt;＆＃34; Zo9qj1VsLlMwgwSozATh2C // tMQHbFOaMvZ1IddeVdQxG7enNDmPWe64RO / 1CmmpBlevmSfJ7 / w9Fzey5NxP8A ==＆＃34;，＆＃34; acquiretime＆＃34; =＆gt; {＆＃34; required_time＆＃34; =＆gt;＆＃34; 2018-01-07＆＃34;，＆＃34; return_time＆＃34; =＆gt; ;＆＃34; 2018-01-22＆＃34;}，＆＃34;提交＆＃34; =＆gt;＆＃34;添加项目＆＃34;，＆＃34; item_id＆＃34; =＆gt;＆＃34 ; 3＆＃34;}     项目负载（0.3ms）SELECT＆＃34; items＆＃34;。* FROM＆＃34; items＆＃34;在哪里＆＃34;项目＆＃34;。＆＃34; id＆＃34; = $ 1 LIMIT $ 2 [[＆＃34; id＆＃34;，3]，[＆＃34; LIMIT＆＃34;，1]]      （0.2ms）BEGIN      （0.2ms）COMMIT      （0.1ms）BEGIN      （0.1ms）ROLLBACK   在117ms内完成500内部服务器错误（ActiveRecord：1.0ms）

ArgumentError（参数数量错误（给定0，预期2））：   app / controllers / acquiretimes_controller.rb：18：在`create＆＃39;     在救援中渲染/home/skj/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.6/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb /布局     渲染/home/skj/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.6/lib/action_dispatch/middleware/templates/rescues/_source.html.erb     已呈现/home/skj/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.6/lib/action_dispatch/middleware/templates/rescues/_source.html.erb(5.7女士）     渲染/home/skj/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.6/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb     呈现/home/skj/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.6/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb(2.7女士）     渲染/home/skj/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.6/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb     呈现/home/skj/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.6/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb(2.7女士）     在救援中呈现/home/skj/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.6/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb / layout（107.9ms）

Answer 1

在上面的回复部分的@TheMouseMan的帮助下，问题已经解决。我遇到的问题是Acquiretime.rb中的拼写错误，我写了belongs_to :users但应该是belongs_to :user。接下来是使用hidden_field从表单传递user.id： <%= f.hiddent_field :user_id, value: current_user.id%>

如何在RoR

1 个答案: