軌道4的關係問題，在登錄

Question

我不知道發生了什麼變化嘗試登錄時收到此錯誤：

ERROR: relation "tags" does not exist 
LINE 1: SELECT DISTINCT "tags".* FROM "tags" INNER JOIN "taggings" O... 

標籤型號：

class Tag < ActiveRecord::Base 
    attr_accessor :unread_count, :user_feeds 

    has_many :taggings 
    has_many :feeds, through: :taggings 
end 

的標籤模型：

class Tagging < ActiveRecord::Base 
    belongs_to :tag 
    belongs_to :feed 
    belongs_to :user 
end 

和用戶的關係：

class User < ActiveRecord::Base 
    has_one :coupon 
    has_many :subscriptions, dependent: :delete_all 
    has_many :feeds, through: :subscriptions 
    has_many :entries, through: :feeds 
    has_many :imports, dependent: :destroy 
    has_many :billing_events, as: :billable, dependent: :delete_all 
    has_many :taggings, dependent: :delete_all 
    has_many :tags, through: :taggings 
    has_many :sharing_services, dependent: :delete_all 
    has_many :unread_entries, dependent: :delete_all 
    has_many :starred_entries, dependent: :delete_all 
    has_many :saved_searches, dependent: :delete_all 
    has_many :actions, dependent: :destroy 
    belongs_to :plan 
end 

這個錯誤是新的，並且在我嘗試安裝intercom.io gem後出現。我刪除了寶石，做了一個寶石清理，重置數據庫和仍然是相同的錯誤。

不知道發生了什麼，如果有人有任何建議，我將不勝感激。

Answer 1

檢查缺少的表，這就是問題所在。