Question

我的模型has_many through和Company之间建立了Group关系。这是型号代码：

class Company < ActiveRecord::Base
  has_many :company_groups
  has_many :groups, through: :company_groups

  accepts_nested_attributes_for :company_groups, allow_destroy: true
end

class Group < ActiveRecord::Base
  has_many :company_groups
  has_many :companies, through: :company_groups

  accepts_nested_attributes_for :company_groups, allow_destroy: true
end

class CompanyGroup < ActiveRecord::Base
  belongs_to :company
  belongs_to :group

  validates_uniqueness_of :company_id, :scope => :group_id
end

我遇到的问题是，在company_groups表格中有{900} group_id=1

的记录

现在，如果我提供编辑组的选项，它会尝试一次加载所有900条记录。

这是我的/app/admin/group.rb文件：

form do |f|
  return unless current_admin_user.super_admin?
  f.semantic_errors *f.object.errors.keys
  f.inputs 'Group Information' do
    f.input :name
  end
  f.has_many :company_groups do | company_group |
    if !company_group.object.nil?
      company_group.input :_destroy, :as => :boolean, :label => "Destroy?"
    end
    if company_group.object.new_record?
      company_group.input :company, :label => 'Company', :as => :select, :collection => @companies
    else
      company_group.input :company, :input_html => { :readonly => "readonly", :value => company_group.object.company.name }, :as => :string
    end
  end
  f.actions
end

页面花了很多时间加载，所以我启用了检查，如果company_group不是新对象，则在文本框中显示company.name（以只读形式）。但是，这使页面加载时间达到＆lt; 25秒，但我仍然认为这不是一次加载这些记录的好方法（因为这可能会挂起浏览器）

我将我的问题分为两部分：

从优化角度来看，编辑这些记录的最佳方法是什么（搜索/延迟加载等）？如果有人早先做过这件事或类似的功能，你可以共享代码片段来实现
从ActiveAdmin的角度来看，ActiveAdmin是否提供了批量编辑记录的便捷方式？

任何帮助都将受到高度赞赏！

最佳，普尼特

编辑：05 / Apr / 17

这是我正在做的编辑1k记录的事情：

允许在公司新/编辑页面上添加|编辑组。
允许通过群组展示/编辑页面上的按钮将公司添加到群组。
允许编辑|通过群组显示页面从群组中删除公司。
代码：我公司的型号代码将保持原样
代码：我的群组型号代码将保持原样

以下是我的完整代码段：

class CompanyGroup < ActiveRecord::Base
  validates_uniqueness_of :company_id, :scope => :group_id

  belongs_to :company
  belongs_to :group

  before_save :ensure_settings

protected
  def ensure_settings
    errors.add(:field_name_2, "You are not allowed to change this field when #{company.boolean_field_name} is set to TRUE") and return false if company.boolean_field_name && field_name_2_changed?
  end
end

这是我的文件/app/admin/company.rb

ActiveAdmin.register Company do
  form do |f|
    f.semantic_errors
    f.inputs do
      f.input :field_1
      f.input :boolean_field_name
      f.has_many :company_groups do | company_group |
        company_group.input :group
        company_group.input :field_name_2, as: :radio, collection: [ ['Yes', true], ['No', false] ]
      end
    end
  end

  show do
    row :field_1
    row :boolean_field_name
    panel "Groups" do
      table_for company.company_groups do
        column "Group Name" do | company_group |
          company_group.group.name
        end
        column "Field Name 2" do |company_group|
          company_group.group.field_name_2
        end
      end
    end
  end
end

这是我的文件/app/admin/group.rb

ActiveAdmin.register Group do
  config.action_items[0] = ActiveAdmin::ActionItem.new :show, only: [:show, :edit] do
    link_to 'Add Company to Group', new_company_group_path(group_id: group.id)
  end

  form do |f|
    f.semantic_errors *f.object.errors.keys
    f.inputs do
      f.input :name
      unless f.object.company_groups.any?
        f.has_many :company_groups do | company_group |
          company_group.input :company, as: :select
          company_group.field_name_2, as: :radio, collection: [ ['Yes', true], ['No', false] ]
        end
      end
    end
    f.actions
  end

  show do
    attributes_table do
      row :name
    end

    panel "Companies" do
      table_for group.company_groups do
        column "" do |company_group|
          link_to("Edit", edit_company_group_path(company_group, group_id: group.id)) + "&nbsp;|&nbsp;".html_safe + (link_to "Delete", company_group_path(company_group), method: :delete, data: { confirm: "Are you sure you want to delete this company from this group?" })
        end
      end
    end
  end
end

最后我的/app/models/company_group.rb文件：

ActiveAdmin.register CompanyGroup do
  form do |f|
    f.semantic_errors *f.object.errors.keys
    f.inputs do
      f.input :group
      f.input :company
      f.input :field_name_2, as: :radio, collection: [ ['Yes', true], ['No', false] ]
    end
  end

  controller do
    def create
      create! do |format|
        format.html { redirect_to(new_company_group_path(group_id: @company_group.group_id)) }
      end
    end

    def update
      update! do |format|
        format.html { redirect_to(group_path(@company_group.group)) }
      end
    end
  end
end

但现在我遇到了不同的问题：

我对company_group.rb的自定义模型验证无效。这意味着，每当我尝试创建/更新公司记录并且boolean_field_name设置为TRUE并且field_name_2被更改时，我都没有收到（a）错误消息，（b）虽然field_name_2的更新值未在DB中更新，但我甚至没有在创建/更新操作上停止。它带我回到了展示页面。
当我尝试更新编辑company_group对象时（通过组显示/编辑页面），情况也是如此。我希望留在company_group的POST / PATCH页面上并显示错误消息，但我正在重定向。这是因为create和update？

编辑：05 / Apr / 17

我甚至尝试通过以下方式检查valid? company_group条记录：

def create
  create! do |format|
    if resource.valid?
      format.html { redirect_to(new_company_group_path(group_id: @company_group.group_id)) }
    end
  end
end

def update
  if resource.valid?
    update! do |format|
      format.html { redirect_to(group_path(@company_group.group)) }
    end
  end
end

但没有运气！

在这里＆＃39;记录日志：

Started PATCH "/company_groups/877" for ::1 at 2017-04-05 16:51:41 +0530
Processing by CompanyGroupsController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"T7jMdOHQygqiX5RSsEkfD1l0h5Q+dpaNrmJlhtiPhpaxen6AyBcv4yD7xAy2GefYpGX0Bvgx4oD7vTMsfIl6fw==", "company_group"=>{"group_id"=>"6", "company_id"=>"623", "field_name_2"=>"true"}, "commit"=>"Update Company group", "id"=>"877"}
[1m[36mCompanyGroup Load (0.3ms)[0m  [1mSELECT  "company_groups".* FROM "company_groups" WHERE "company_groups"."id" = $1 LIMIT 1[0m  [["id", 877]]
[1m[35m (0.3ms)[0m  BEGIN
[1m[36mCompanyGroup Exists (0.5ms)[0m  [1mSELECT  1 AS one FROM "company_groups" WHERE ("company_groups"."company_id" = 623 AND "company_groups"."id" != 877 AND "company_groups"."group_id" = 6) LIMIT 1[0m
[1m[35mCompany Load (0.3ms)[0m  SELECT  "companies".* FROM "companies" WHERE "companies"."id" = $1  ORDER BY companies.name LIMIT 1  [["id", 623]]
[1m[36m (0.3ms)[0m  [1mROLLBACK[0m
[1m[35mCompanyGroup Exists (0.5ms)[0m  SELECT  1 AS one FROM "company_groups" WHERE ("company_groups"."company_id" = 623 AND "company_groups"."id" != 877 AND "company_groups"."group_id" = 6) LIMIT 1
[1m[36mGroup Load (0.3ms)[0m  [1mSELECT  "groups".* FROM "groups" WHERE "groups"."id" = $1 LIMIT 1[0m  [["id", 6]]
Redirected to http://localhost:3000/superadmin/groups/6
Completed 302 Found in 94ms (ActiveRecord: 7.8ms)

Answer 1

最后，我通过将before_save回调更改为validate来解决问题。 4月/ 4月更新的帖子将继续保持相同，我在/app/models/company_group.rb文件中所做的唯一更改。

class CompanyGroup < ActiveRecord::Base
  validates_uniqueness_of :company_id, :scope => :group_id

  belongs_to :company
  belongs_to :group

  validate :ensure_settings

protected
  def ensure_settings
    errors.add(:field_name_2, "You are not allowed to change this field when #{company.boolean_field_name} is set to TRUE") and return false if company.boolean_field_name && field_name_2_changed?
  end
end

那就是它。感谢我的一位朋友建议我。：）

ActiveAdmin has_many通过编辑1k记录

1 个答案: