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
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？
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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：
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)) + " | ".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：
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。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)
答案 0 :(得分：0)
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。 ：）