我正在将Active Admin集成到Ruby on Rails应用程序中。我注册了所有模型，并为所有模型设置了index，filter和show。一切正常，但对于一个模型，admin/show页面没有运行。
从admin/index页面调用节目页面时，我得到：
NoMethodError in Admin/safts#show
Showing /Users/xxxxxx/.rvm/gems/ruby-1.8.7-p374@xxxxxx/gems/activeadmin-0.6.0/app/views/active_admin/resource/show.html.arb where line #1 raised:
undefined method `empty?' for #<Keyword:0x105498800>
Extracted source (around line #1):
1: insert_tag renderer_for(:show)
Request
Parameters:
{"id"=>"9"}
我的日志文件中的相对条目是：
Started GET "/admin/safts/9" for 127.0.0.1 at Sun Feb 25 14:48:04 +0100 2018
Processing by Admin::SaftsController#show as HTML
Parameters: {"id"=>"9"}
[1m[35mAdminUser Load (0.6ms)[0m SELECT `admin_users`.* FROM `admin_users` WHERE `admin_users`.`id` = 2 LIMIT 1
[1m[36mSaft Load (0.2ms)[0m [1mSELECT `safts`.* FROM `safts` WHERE `safts`.`id` = ? LIMIT 1[0m [["id", "9"]]
[1m[35mKeyword Load (0.3ms)[0m SELECT `keywords`.* FROM `keywords` WHERE `keywords`.`id` = 138 LIMIT 1
Rendered /Users/xxxxxx/.rvm/gems/ruby-1.8.7-p374@xxxxxx/gems/activeadmin-0.6.0/app/views/active_admin/resource/show.html.arb (3.1ms)
Completed 500 Internal Server Error in 10ms
ActionView::Template::Error (undefined method `empty?' for #<Keyword:0x1052a0890>):
1: insert_tag renderer_for(:show)
activemodel (3.2.5) lib/active_model/attribute_methods.rb:407:in `method_missing'
activerecord (3.2.5) lib/active_record/attribute_methods.rb:149:in `method_missing'
activeadmin (0.6.0) lib/active_admin/views/pages/show.rb:38:in `default_title'
activeadmin (0.6.0) lib/active_admin/views/pages/show.rb:14:in `title'
activeadmin (0.6.0) lib/active_admin/views/pages/base.rb:25:in `build_active_admin_head'
arbre (1.0.1) lib/arbre/context.rb:92:in `with_current_arbre_element'
arbre (1.0.1) lib/arbre/element/builder_methods.rb:49:in `within'
activeadmin (0.6.0) lib/active_admin/views/pages/base.rb:24:in `build_active_admin_head'
activeadmin (0.6.0) lib/active_admin/views/pages/base.rb:9:in `build'
arbre (1.0.1) lib/arbre/element/builder_methods.rb:30:in `build_tag'
arbre (1.0.1) lib/arbre/context.rb:92:in `with_current_arbre_element'
arbre (1.0.1) lib/arbre/element/builder_methods.rb:26:in `build_tag'
arbre (1.0.1) lib/arbre/element/builder_methods.rb:39:in `insert_tag'
activeadmin (0.6.0) app/views/active_admin/resource/show.html.arb:1:in `___sers__tephan__rvm_gems_ruby_______p____saftzine_gems_activeadmin_______app_views_active_admin_resource_show_html_arb___1026777847_2195984600'
arbre (1.0.1) lib/arbre/context.rb:45:in `instance_eval'
arbre (1.0.1) lib/arbre/context.rb:45:in `initialize'
activeadmin (0.6.0) app/views/active_admin/resource/show.html.arb:1:in `new'
activeadmin (0.6.0) app/views/active_admin/resource/show.html.arb:1:in `___sers__tephan__rvm_gems_ruby_______p____saftzine_gems_activeadmin_______app_views_active_admin_resource_show_html_arb___1026777847_2195984600'
actionpack (3.2.5) lib/action_view/template.rb:145:in `send'
actionpack (3.2.5) lib/action_view/template.rb:145:in `render'
activesupport (3.2.5) lib/active_support/notifications.rb:125:in `instrument'
.
.
.
script/rails:6:in `gem_original_require'
script/rails:6:in `require'
script/rails:6
Rendered /Users/xxxxxx/.rvm/gems/ruby-1.8.7-p374@xxxxxx/gems/actionpack-3.2.5/lib/action_dispatch/middleware/templates/rescues/_trace.erb (0.7ms)
Rendered /Users/xxxxxx/.rvm/gems/ruby-1.8.7-p374@xxxxxx/gems/actionpack-3.2.5/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.6ms)
Rendered /Users/xxxxxx/.rvm/gems/ruby-1.8.7-p374@xxxxxx/gems/actionpack-3.2.5/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (9.8ms)
rails模型是：
class Saft < ActiveRecord::Base
attr_accessible :colour, :cover_alt, :description, :number, :short, :title_id
# Associations
has_and_belongs_to_many :keywords, :join_table => "safts_keywords"
has_many :authors, :through => :texts
has_many :texts
belongs_to :title, :class_name => "Keyword", :foreign_key => "title_id"
has_one :cover
has_many :stamps
has_many :images
end
ActiveAdmin资源是：
ActiveAdmin.register Saft do
index do
column "Issue", :number
column "Title", :title_id do |saft|
link_to saft.title.word.capitalize, saft_path(saft)
end
column :short
column :description
column :colour
column :cover_alt
default_actions
end
# Filter only by:
filter :title_id, :label => 'Title', :as => :select, :collection => Saft.all.map{|u| ["#{u.title.word.capitalize}", u.id]}
filter :short
form do |f|
f.inputs "Saft Details" do
f.input :number, :label => "Number of issue"
f.input :title_id, :label => 'Title', :as => :select, :collection => Keyword.all.map{|u| ["#{u.word.capitalize}", u.id]}
f.input :short
f.input :description
f.input :colour, :label => "Colour (in hex)"
f.input :cover_alt
end
f.actions
end
show do
panel "Saft Details" do
attributes_table_for saft do
row :id
row :number
row :title_id
row :short
row :description
row :colour
row :cover_alt
row :created_at
row :updated_at
end
end
active_admin_comments
end
end
仅供上下文：SAFT是一本杂志，包含文本，图像，作者等。所有其他资源在Admin中运行良好。只有show page的SAFT不起作用。它可能是什么？
答案 0 :(得分：0)
您的日志条目表示关键字未响应empty?中的Pages::Show#default_title。
default_title来电display_name，您是否覆盖了display_name_methods？在这种情况下，您可以删除:title
在config/initializers/active_admin：
config.display_name_methods = [ :display_name,
:full_name,
:name,
:username,
:login,
:email,
:to_s ]
在这种情况下，您也可以尝试更明确地设置标题，例如。
show title: :short do ...
我注意到你使用的是Rails和ActiveAdmin的旧版本，我希望你会考虑upgrading。