将两个“类别”分解为两个索引表的范围？答案

【问题标题】：Scope to Break Two "Categories" Into Two Index Tables?将两个“类别”分解为两个索引表的范围？
【发布时间】：2015-01-05 22:21:32
【问题描述】：

当用户量化自己时，_form 为他们提供了两种分类结果的方法，可以是每月平均或一次性实例。我希望每个类别都有自己的表格，如下所示：

我如何使用范围来执行此操作，因为现在我从第一个代码 sn-p 中得到一个未定义的方法错误：@average_quantifieds = current_user.quantifieds.average & @instance_quantifieds = current_user.quantifieds.instance

quantifieds_controller.rb

class QuantifiedsController < ApplicationController
  before_action :set_quantified, only: [:show, :edit, :update, :destroy]
  before_action :authenticate_user!, except: [:index, :show]

  def index
   @quantifieds = Quantified.all.order("date")
   @average_quantifieds = current_user.quantifieds.average
   @instance_quantifieds = current_user.quantifieds.instance
  end

  def show
  end

  def new
    @quantified = current_user.quantifieds.build
  end

  def edit
  end

  def create
    @quantified = current_user.quantifieds.build(quantified_params)
    if @quantified.save
      redirect_to quantifieds_url, notice: 'Goal was successfully created'
    else
      render action: 'new'
  end
end

  def update
    if @quantified.update(quantified_params)
      redirect_to quantifieds_url, notice: 'Goal was successfully updated'
    else
      render action: 'edit'
  end
end

  def destroy
    @quantified.destroy
    redirect_to quantifieds_url
  end

  private
    def set_quantified
      @quantified = Quantified.find(params[:id])
    end

    def correct_user
      @quantified = current_user.quantifieds.find_by(id: params[:id])
      redirect_to quantifieds_path, notice: "Not authorized to edit this goal" if @quantified.nil?
    end

    def quantified_params
      params.require(:quantified).permit(:categories, :name, :metric, :result, :date)
    end
end

quantified.rb

class Quantified < ActiveRecord::Base
    belongs_to :user

    CATEGORIES = ['Monthly Average', 'One-Time Instance']
end

索引

<table>
    <% @average_quantifieds.each do |average| %>
      ....
    <% end %>
</table>

<table>
    <% @instance_quantifieds.each do |instance| %>
        ....
    <% end %>
</table>

user.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

    has_many :goals
    has_many :values
    has_many :quantifieds
end

【问题讨论】：

您能发布您的user.rb 文件吗？尤其是联想部分……
我按要求将其添加到底部。感谢您为我调查此问题！
所有人都发表长评论作为答案。基本上，这就是答案。

标签： ruby-on-rails scope html-table

【解决方案1】：

在 rb 文件中：

class Quantified < ActiveRecord::Base
	belongs_to :user
 	scope :averaged,  -> { where(categories: 'Monthly Average') }
  scope :instance, -> { where(categories: 'One-Time Instance') }

	CATEGORIES = ['Monthly Average', 'One-Time Instance']
end

我将所有内容从“平均”更改为“平均”，否则我会收到错误消息。

【讨论】：