tt12580-github (wuweiliang)

select 怎么实现多个 vaule 对应一个 option

tt12580-github — Fri, 14 Apr 2017 15:28:13 +0800

<%= select_tag :state, options_for_select([['未退款', ['shipped', 'apply_refunded']], ["已退款", 'refunded']], params[:state]), include_blank: true, class: 'form-control' %>

上面代码在 log 中变这样了什么原因

Parameters: {"utf8"=>"✓", "start_time"=>"2017-04-08", "stop_time"=>"2017-04-14", "state"=>"[\"shipped\", \"apply_refunded\"]", "customer"=>"", "uuid"=>"", "commit"=>"查询"}

多对多使用 simple_form_for 问题

tt12580-github — Tue, 28 Mar 2017 15:23:25 +0800

现在有两张表 categories 和 stores，多对多关系。使用的是 simple_form 的 association

# category.rb
class Category < ActiveRecord::Base
    has_many :store_store_categories
    has_many :stores, through: :store_store_categories
end

# store.rb
class Store < ApplicationRecord
  has_many :store_store_categories
  has_many :categories, through: :store_store_categories
end

# store_store_category.rb
class StoreStoreCategory < ApplicationRecord
  belongs_to :store
  belongs_to :category
end

# store_category.rb
class StoreCategory < Category
end

# store_categories_controller.rb
def allow_params
   params.require(:store_category).permit(:name, store_ids: [])
end
# stores_controller.rb
def store_params
  params.require(:store).permit(:store_name, category_ids: [])
end

# app/views/stores/_form.html.erb 
<%= simple_form_for @store, class: "form-horizontal" do |f| %>
    <div class="row">
       <div class="col-sm-2" style="text-align: right;">
          <label>选择门店分组</label>
       </div>
       <div class="col-sm-2">
           <%= f.association :categories, as: :check_boxes, class: "form-control", label: false %>
       </div>
      </div>
     <div class="row">
        <div class="col-sm-4 col-sm-offset-2">
           <%= link_to '返回', stores_path, class: "btn btn-white" %>
        <input class="btn btn-primary" type="submit" name="commit" value="保存" data-disable-with="保存中。。。">
     </div>
   </div>
<% end %>
这个页面显示正常
![](https://l.ruby-china.com/photo/2017/5faae1348d08d731639dfe4db7e34c2f.png!large)

<%= simple_form_for @store, class: "form-horizontal" do |f| %>
    <div class="row">
       <div class="col-sm-2" style="text-align: right;">
          <label>选择门店分组</label>
       </div>
       <div class="col-sm-2">
           <%= f.association :categories, as: :check_boxes, class: "form-control", label: false %>
       </div>
      </div>
     <div class="row">
        <div class="col-sm-4 col-sm-offset-2">
           <%= link_to '返回', stores_path, class: "btn btn-white" %>
        <input class="btn btn-primary" type="submit" name="commit" value="保存" data-disable-with="保存中。。。">
     </div>
   </div>
<% end %>

这个页面显示就变这样了

请教使用 remote 后 flash 怎么显示

tt12580-github — Mon, 20 Mar 2017 11:25:11 +0800

我 google 了好多都没成功

# application.html.erb
<div id='notice'>
    <%= render :partial => 'layouts/flash' , :locals => { :flash => flash } %>
</div>

# layouts/_flash.html.erb
<% flash.each do |name, msg| %>
  <div class="alert-message info">
      <a class="close dismiss" href="#">x</a>
      <p><%= msg %></p>
  </div>          
<% end %>

# controller
def active
        respond_to do |format|
            if @groupon_item.active
                @groupon_item.update_attributes(active: false)
                format.js {
                    flash.now[:success] = "商品已下架"
                    render action: 'active', status: :active, location: @groupon_item
                }
            else
                @groupon_item.update_attributes(active: true)
                format.js {
                    flash.now[:success] = "商品已上架！"
                    render action: 'active', status: :active, location: @groupon_item
                 }
            end
        end
    end

# view
<%= button_to active_text, active_commission_groupon_path(groupon_item), remote: true, method: :patch, data: { confirm: '确定此操作?' }, class: "btn btn-white" %>

# active.js.erb
$("#notice").html("<%= escape_javascript(render :partial => 'layouts/flash' , :locals => { :flash => flash }).html_safe %>");

问个关于 ELK 的问题

tt12580-github — Fri, 10 Mar 2017 14:44:33 +0800

rails 的 ELK 该怎么配置才能显示成下面这个样子的 message: {"method":"GET","path":"/","format":"html","controller":"application","action":"index","status":200, "duration":7.91,"view":0.31,"db":0.0,"ip":"req_ip","route":"application#index","request_id":"some_id","source":"127.0.1.1","tags":["request"],"@timestamp":"2017-02-10T06:52:01.984Z","@version":"1"} @version:1 @timestamp:February 10th 2017, 08:52:10.451 offset:25,747 type:log tags:json, beats_input_codec_plain_applied beat.hostname:deployer-VirtualBox

请教下 Kaminari 不刷新怎么自动分页

tt12580-github — Mon, 06 Mar 2017 10:14:55 +0800

在做一个上传图片的 demo，遇到了一个问题。上传后页面会自动刷新，新添加的图片也出现在最前面了，但就是分页出现了问题分页要刷新下才能正常显示布局，请各位大佬们帮忙解决下。 demo:https://tt12580-demo.herokuapp.com/addresses 代码：https://github.com/tt12580/mini_test

请教下 radio_button 和 select 一起该怎么用

tt12580-github — Wed, 01 Mar 2017 15:52:21 +0800

现在有个问题，有一个字段 city，用 radio_button 进行单选，选第一个把第一个的值传给 city，选第二个时要从下拉框中选取并存到 city 中

<div class="container">
  <div class="col-lg-6 col-lg-offset-3">
    <%= simple_form_for @post do |f| %>
      <div class="col-lg-8">
        <%= f.check_box :colors, { :multiple => true }, "red" %>
        <%= f.label :colors, 'red', value: 'red' %>
        <div class="hide_red">
          <%= f.input :country, collection: Post::COUNTRIES.map{ |k, v| [k, k] }, as: :select %>
        </div>
        </div>
        <div class="col-lg-8">
        <%= f.check_box(:colors, { :multiple => true }, "black") %>
        <%= f.label :colors, 'black', value: 'black' %>
        <div class="hide_black">
          <div class="col-lg-8">
            <%= f.radio_button :city, "nb" %>
            <%= f.label :city, "nb", value: "nb" %>
          </div>
          <div class="col-lg-8">
            <%= f.radio_button :city, "#{@post.city}" %>
            <%= f.select :city, Post::CITIES - [Post::CITIES[0]], html: { id: "select_city" } %>
          </div>
        </div>
      </div>

      <div class="col-lg-12">
        <%= f.button :submit %>
      </div>
    <% end %>
  </div>
</div>

求推荐好的 Rails 学习路线

tt12580-github — Wed, 14 Dec 2016 15:07:54 +0800

本人现在学 rails 也有接近半年了但感觉现在很弱，很多东西都不懂，本来想在 ruby-china 掘金之类的学点东西。但是看你们发的大部分话题都看不懂，而且由于我是直接从 rails 入手的，像这种的方法定义根本看不懂：

def application_top_nav(controller_name, action_name)
   home_nav = Navigate.home_navs
   navs = ''.html_safe
   nav_activated = false
   home_nav.each do |nav|
     nav_controller_name, nav_action_name = nav.navigate_alias.split('#')
     nav_class =
       if nav.navigate_alias == "#{controller_name}##{action_name}"
         nav_activated = true
         'nav_yes current'
       elsif nav_controller_name == controller_name && nav.navigate_alias != 'home#index' && !nav_activated
         nav_activated = true
         'nav_yes current'
       else
         ''
       end
     nav_hot_list = nav.navigate_alias == 'products#index_part' ? 'hot' : ''
     navs += content_tag(:li, link_to(nav.name, nav.path, class: nav_class, alt: nav.name), class: nav_hot_list)
   end
   navs
 end

还有一些像 https://www.v2ex.comtab网站的点击 Apple 怎么出现https://www.v2ex.com/?tab=apple这样的结果