Question

我为自己的应用创建了转推/回复功能。我该如何在视图中隐藏重复的“内容”？我在索引视图中进行了设置，以便显示表<%= render @letsgos %>中的所有条目。

我设置了转推/回复，以便用户B可以重新发布用户A发布的内容。在数据库中，它将从用户A复制原始发布，在“repost_from_user_id”列中，它将显示“内容”的原始ID。

控制器：

class LetsgosController < ApplicationController
  before_action :correct_user, only: :destroy

  def create
    @letsgo = current_user.letsgos.build(letsgo_params)
    if @letsgo.save
      flash[:success] = "Date posted!"
      redirect_to root_url
    else
      flash[:error] = "Date was not posted!"
      redirect_to root_url
    end
  end

  def destroy
    @letsgo.destroy
    redirect_to root_url
  end

  def index
    @letsgos = Letsgo.all 
    @eat = Letsgo.where(:tag => 'Eat')
  end

  def eatdrink
    @eatdrink = Letsgo.where(:tag => 'Eat/Drink')
  end

  def listenwatch
    @listenwatch = Letsgo.where(:tag => 'Listen/Watch')
  end

  def play
    @play = Letsgo.where(:tag => 'Play')
  end

  def explore
    @explore = Letsgo.where(:tag => 'Explore')
  end

  def other
    @other = Letsgo.where(:tag => 'Other')
  end

  def repost
    @letsgo = Letsgo.find(params[:id]).repost(current_user)
    redirect_to root_url
  end

private

  def letsgo_params
    params.require(:letsgo).permit(:content, :tag)
  end

  def correct_user
    @letsgo = current_user.letsgos.find_by(id: params[:id])
    redirect_to root_url if @letsgo.nil?
  end
end

模型：

class Letsgo < ActiveRecord::Base
  belongs_to :user
  default_scope -> { order('created_at DESC') }
  validates :content, presence: true, length: { maximum: 360 }
  validates :user_id, presence: true

  def repost(user_object)
    new_letsgo = self.dup #duplicates the entire object, except for the ID
    new_letsgo.user_id = user_object.id
    new_letsgo.repost_from_user_id = self.id #save the user id of original repost, to keep track of where it originally came from
    new_letsgo.save
  end

  def is_repost?
    repost_from_user_id.present?
  end

  def original_user
    User.find(repost_from_user_id) if is_repost?
  end
end

Answer 1

如果我理解正确，您不想显示转贴（或原件）。您应该在索引中使用范围或where方法所以而不是：

def index
  @letsgos = Letsgo.all 
  @eat = Letsgo.where(:tag => 'Eat')
end

尝试：

def index
  @letsgos = Letsgo.where("repost_from_user_id IS NULL").all 
  @eat = Letsgo.where(:tag => 'Eat')
end

这应该只显示原件。仅显示转贴是更难的，因为过滤它们并不容易。您可能需要在模型中添加一列，以便在重新发布时标记原始列。类似的东西：

self.reposted = true
self.save

在你的转发方法中。

在视图中隐藏数据库中的重复内容

1 个答案: