Question

当用户开始习惯时，他会在表单中选择date_started。

我们如何使用date_started作为起点来确定并在索引中显示用户所在的level？

在用户进入下一级别之前必须经过一定的天数（如下所示模型）。

目前，当用户查看索引时，他的所有习惯都会显示出来＆＃34; Mastered＆＃34;无论date_started是什么。提前感谢您的专业知识=]

形式

＆＃13;

      <label> Started: </label>
      <%= f.date_select :date_started, :order => [:month, :day, :year], class: 'date-select' %>

＆＃13;

class Habit < ActiveRecord::Base
	belongs_to :user
	validates :action, presence: true
	serialize :committed, Array

	scope :missed, -> { where(missed: 1) }
	scope :nonmissed, -> { where(missed: 0) }

	def levels
	  case committed
	  when 0..9
	    1
	  when 10..24
	    2
	  when 25..44
	    3
	  when 45..69
	    4
	  when 70..99
	    5
	  else
	    "Mastered"
		end
	end
end

＆＃13;

控制器

＆＃13;

class HabitsController < ApplicationController
  before_action :set_habit, only: [:show, :edit, :update, :destroy]
  before_action :correct_user, only: [:edit, :update, :destroy]
  before_action :authenticate_user!, except: [:index, :show]

  def index
   @habits = Habit.all.order("date_started DESC")
   @missed_habits = current_user.habits.missed
   @nonmissed_habits = current_user.habits.nonmissed
  end

  def show
  end

  def new
    @habit = current_user.habits.build
  end

  def edit
  end

  def create
    @habit = current_user.habits.build(habit_params)
    if @habit.save
      redirect_to @habit, notice: 'Habit was successfully created.'
    else
      render action: 'new'
    end
  end

  def update
    if @habit.update(habit_params)
      redirect_to @habit, notice: 'Habit was successfully updated.'
    else
      render action: 'edit'
    end
  end

  def destroy
    @habit.destroy
    redirect_to habits_url
  end

  private
    def set_habit
      @habit = Habit.find(params[:id])
    end

    def correct_user
      @habit = current_user.habits.find_by(id: params[:id])
      redirect_to habits_path, notice: "Not authorized to edit this habit" if @habit.nil?
    end

    def habit_params
      params.require(:habit).permit(:missed, :left, :levels, :date_started, :trigger, :action, :target, :positive, :negative, :committed => [])
    end
end

＆＃13;

Answer 1

尝试这样的事情：

def levels
  n_days = Integer(Date.today - date_started)

  case n_days
    when 0..9
      1
    when 10..24
      2
  ...
  end

如何使用：date_started来计算：水平？

1 个答案: