[英]ActionView::Template::Error (undefined method `klass' for nil:NilClass)
On using a filter related to subscription I am getting the following error -在使用与订阅相关的过滤器时,我收到以下错误 -
ActionView::Template::Error (undefined method `klass' for nil:NilClass):
1: insert_tag renderer_for(:index)
This is the user model -这是用户 model -
has_one :owned_account, class_name: 'Account'
has_one :owned_subscription, through: :owned_account, source: :subscription
This is the subscription model -这是订阅 model -
belongs_to :account
has_one :owner, through: :account, source: :user
This is the account model -这是帐户 model -
belongs_to :user
has_one :subscription, dependent: :destroy
Is anyone having any idea how to resolve it?有谁知道如何解决它? Any help would be much appreciated.任何帮助将非常感激。
EDIT - This is the full trace of error编辑 - 这是错误的完整痕迹
ActionView::Template::Error (undefined method `klass' for nil:NilClass):
1: insert_tag renderer_for(:index)
activerecord (4.2.11.3) lib/active_record/reflection.rb:671:in `source_reflection'
activerecord (4.2.11.3) lib/active_record/reflection.rb:640:in `foreign_key'
activeadmin (1.2.1) lib/active_admin/filters/active_filter.rb:119:in `block in find_predicate_association'
activeadmin (1.2.1) lib/active_admin/filters/active_filter.rb:119:in `each'
activeadmin (1.2.1) lib/active_admin/filters/active_filter.rb:119:in `detect'
activeadmin (1.2.1) lib/active_admin/filters/active_filter.rb:119:in `find_predicate_association'
activeadmin (1.2.1) lib/active_admin/filters/active_filter.rb:110:in `predicate_association'
activeadmin (1.2.1) lib/active_admin/filters/active_filter.rb:92:in `find_class'
activeadmin (1.2.1) lib/active_admin/filters/active_filter.rb:16:in `initialize'
activeadmin (1.2.1) lib/active_admin/filters/active.rb:23:in `new'
activeadmin (1.2.1) lib/active_admin/filters/active.rb:23:in `block in build_filters'
activeadmin (1.2.1) lib/active_admin/filters/active.rb:23:in `map'
activeadmin (1.2.1) lib/active_admin/filters/active.rb:23:in `build_filters'
activeadmin (1.2.1) lib/active_admin/filters/active.rb:17:in `initialize'
activeadmin (1.2.1) lib/active_admin/filters/active_sidebar.rb:13:in `new'
activeadmin (1.2.1) lib/active_admin/filters/active_sidebar.rb:13:in `block in block'
activeadmin (1.2.1) lib/active_admin/views/components/sidebar_section.rb:28:in `instance_exec'
activeadmin (1.2.1) lib/active_admin/views/components/sidebar_section.rb:28:in `build_sidebar_content'
activeadmin (1.2.1) lib/active_admin/views/components/sidebar_section.rb:16:in `build'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:30:in `block in build_tag'
arbre (1.4.0) lib/arbre/context.rb:93:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:49:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:26:in `build_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:39:in `insert_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:14:in `sidebar_section'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:132:in `block (2 levels) in build_sidebar'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:131:in `collect'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:131:in `block in build_sidebar'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:31:in `block in build_tag'
arbre (1.4.0) lib/arbre/context.rb:93:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:49:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:26:in `build_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:39:in `insert_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:14:in `div'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:130:in `build_sidebar'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:78:in `block in build_page_content'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:31:in `block in build_tag'
arbre (1.4.0) lib/arbre/context.rb:93:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:49:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:26:in `build_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:39:in `insert_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:14:in `div'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:76:in `build_page_content'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:54:in `block (2 levels) in build_page'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:31:in `block in build_tag'
arbre (1.4.0) lib/arbre/context.rb:93:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:49:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:26:in `build_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:39:in `insert_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:14:in `div'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:50:in `block in build_page'
arbre (1.4.0) lib/arbre/context.rb:93:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:49:in `with_current_arbre_element'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:49:in `build_page'
activeadmin (1.2.1) lib/active_admin/views/pages/base.rb:10:in `build'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:30:in `block in build_tag'
arbre (1.4.0) lib/arbre/context.rb:93:in `with_current_arbre_element'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:26:in `build_tag'
arbre (1.4.0) lib/arbre/element/builder_methods.rb:39:in `insert_tag'
not sure about the error, but in the subcription
model, shouldn't it be belongs_to owner
;不确定错误,但在订阅subcription
中,不应该是belongs_to owner
; And more about association problems with undefined method 'klass' for nil:NilClass in the link below在下面的链接中,更多关于 nil:NilClass 的未定义方法 'klass' 的关联问题
reference: https://github.com/thoughtbot/shoulda-matchers/issues/611参考: https://github.com/thoughtbot/should-matchers/issues/611
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