使用范围

Question

我想隐藏声明的一些记录，而不是完全删除它们，以便在临时隐藏后检索相应的余额。

请参阅屏幕截图以获得更好的理解，如下所示;

我将如何进行？

index.html.erb

<div class="row">

    <div class="col-md-10 col-md-offset-1">

        <div class="table-responsive myTable">

            <table id = "kola" class="table listing text-center">
                <tr class="tr-head">
                    <td>Date</td>
                    <td>Description</td>
                    <td>Amount</td>
                    <td>Discount</td>
                    <td>Paid</td>
                    <td>Balance</td>
                </tr>

                <tr>
                    <td></td>
                </tr>


                <a href="#" class="toggle-formed" style="float: right;" >Search</a>

                <div id="sample">

                    <%= form_tag xvaziris_path, remote: true, method: :get, class: "form-group", role: "search" do %>
                    <p>
                        <center><%= text_field_tag :search, params[:search], placeholder: "Search for.....", autofocus: true, class: "form-control-search" %>
                            <%= submit_tag "Search", name: nil, class: "btn btn-md btn-primary" %></center>
                        </p>
                        <% end %><br>
                    </div>



                    <%= render @xvaziris %>

                </table>
            </div>
        </div>
    </div>

_xvaziri.html.erb

<tr   class="tr-<%= cycle('odd', 'even') %>">

    <td class="col-1"><%= xvaziri.date.strftime('%d/%m/%Y') %></td>
    <td class="col-3"><%= span_with_possibly_red_color xvaziri.description %></td>


    <td class="col-1"><%= number_with_precision(xvaziri.amount, :delimiter => ",", :precision => 2) %></td>

    <td class="col-1 neg"><%= number_with_precision(xvaziri.discount, :delimiter => ",", :precision => 2) %></td>

    <td class="col-1 neg"><%= number_with_precision(xvaziri.paid, :delimiter => ",", :precision => 2) %></td>


    <% @balance += xvaziri.amount.to_f - xvaziri.discount.to_f - xvaziri.paid.to_f %>

    <% color = @balance >= 0 ? "pos" : "neg" %>

    <td class="col-1 <%= color %>"><%= number_with_precision(@balance.abs, :delimiter => ",", :precision => 2) %></td>

</tr>

xvaziri.rb

class Xvaziri < ActiveRecord::Base

    def to_s
        description
    end

    def self.import(file)
        CSV.foreach(file.path, headers: true) do |row|
            Xvaziri.create! row.to_hash
        end
    end


    def self.search(search)

        where (["description LIKE ? OR amount LIKE ? OR paid LIKE ?", "%#{search}%","%#{search}%","%#{search}%"]) 

    end

end

20151128091020_create_xvaziris.rb

class CreateXvaziris < ActiveRecord::Migration
    def change
        create_table :xvaziris do |t|
            t.date :date
            t.text :description
            t.decimal :amount
            t.decimal :discount
            t.decimal :paid
            t.decimal :balance
            t.timestamps null: false
        end
    end
end

xvaziris_controller.rb

class XvazirisController < ApplicationController

    before_action :set_xvaziri, only: [:show, :edit, :update, :destroy]

     layout "fedena"


    def index
        @xvaziris = Xvaziri.search(params[:search])


        respond_to do |format|
            format.js
            format.html 
        end 
    end

    def import
        Xvaziri.import(params[:file])
        redirect_to xvaziris_url, notice: "Xvaziris imported."
    end

    def show
    end

    def new
        @xvaziri = Xvaziri.new
    end

    def create
        @xvaziri = Xvaziri.new(xvaziri)
        if
            @xvaziri.save
            flash[:notice] = 'Xvaziri Created'
            redirect_to @xvaziri
        else
            render 'new'
        end
    end

    def edit
    end

    def update
        if @xvaziri.update(xvaziri)
            flash[:notice] = 'Xvaziri Updated'
            redirect_to @xvaziri
        else
            render 'edit'
        end

    end

    def destroy
        @xvaziri.destroy
        flash[:notice] = 'Xvaziri was successfully destroyed.'
        redirect_to xvaziris_url    
    end

    private
    # Use callbacks to share common setup or constraints between actions.
    def set_xvaziri
        @xvaziri = Xvaziri.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def xvaziri
        params.require(:xvaziri).permit(:date, :description, :amount, :discount, :paid)
    end

end

欢迎任何建议。

提前谢谢。

Answer 1

编辑：此答案无效，因为它假定OP想要永久存档记录。

使用范围

以常规方式向您的表格添加新字段archived。我猜你知道怎么做。
设置some_xvaziri.archived=true以标记您不想再显示的记录，而不是删除行。
在您的模型中，添加“默认范围”（请参阅http://apidock.com/rails/ActiveRecord/Base/default_scope/class）
```
class Xvaziri < ActiveRecord::Base
  default_scope { where(:archived => false) }
end
```
这将从所有rails查询中删除这些记录（除非您明确告诉rails忽略查询的默认范围）。

Answer 2

这是添加隐藏字段的实用帮助：

在您的控制台中输入以下内容添加迁移：

section#landing {
   width: 100%;
   height: 100vh;
   background: url('http://i.stack.imgur.com/fXmkE.jpg');
   background-size: contain;
   background-repeat:no-repeat;
   background-position: top center;
   background-attachment: scroll;

}

打开生成的迁移文件并更改以下行：

rails g migration AddHiddenToXvaziris hidden:boolean

保存文件并运行迁移：

add_column :xvaziris, :hidden, :boolean, :default => false

然后你必须检查hidden-attribute是否为false，只有当hidden为false时才向rake db:migrate添加一行。在 xvaziris_controller.rb 中，只需更改索引方法，如下所示：

@xvaziris

调用destroy动作时，还必须将hidden属性设置为true。在 xvaziris_controller.rb 中更改destroy方法：

def index
    @xvaziris = Xvaziri.find_by hidden: false
    @xvaziris = @xvaziri.search(params[:search])

    respond_to do |format|
        format.js
        format.html 
    end 
end

注意，元素现在没有被销毁，但设置为hidden == true。如果你想在其他地方销毁元素，我建议保留destroy方法，并在你的 xvaziris_controller.rb中添加一个新方法：

def destroy
    @xvaziri = Xvaziri.find(params[:id])
    @xvaziri.hidden = true
    flash[:notice] = 'Xvaziri was successfully hidden.'
    redirect_to xvaziris_url    
end

当您这样做时，您还必须在路线中添加以下行：

def hide_xvaziri
    @xvaziri = Xvaziri.find(params[:id])
    @xvaziri.hidden = true
    flash[:notice] = 'Xvaziri was successfully hidden.'
    redirect_to xvaziris_url    
end

您可以根据需要自定义路线。

要再次显示隐藏的元素，我建议您执行以下操作：添加＆＃34;全部显示＆＃34; -Button到您的 index.html.erb ：

get '/xvaziri/:id/hide', to: 'xvaziris#hide_xvaziri'

然后你必须在这行添加 routes.rb ：

<%= link_to "Show all", resetfilter_xvaziri_path %>

在此方法的 xvaziris_controller.rb 中：

get '/xvaziri/resetfilter', to: 'xvaziris#reset_filter'

Answer 3

您可以引入默认hidden的新字段false，以便显示所有现有数据。然后，对于要隐藏的每条记录，将此字段（标记）设置为true。

实施平衡方法以包含或排除隐藏记录。

Answer 4

完成此link

此外还有这个宝石作为偏执狂做同样的事情

隐藏记录而不是在rails 4.2.0上的ruby中删除它们

4 个答案:

使用范围