postgresql - PG::UndefinedColumn after Rails rename column - 


pg::undefinedcolumn @ /books/17 error:  column "books_count" not exist @ character 45 statement:  update "users" set "books_count" = coalesce("books_count", 0) - 1 "users"."id" = $1

i above error after changing running name change in rails.

def change     rename_column :users, :books_count, :books_shared   end

i first noticed problem when trying delete book. otherwise, works. there column in postgresql have change well? or should revert name change?

i restarted server.

edit: current schema

create_table "users", force: :cascade |t|     t.string   "email",                  default: "", null: false     t.string   "encrypted_password",     default: "", null: false     t.string   "reset_password_token"     t.datetime "reset_password_sent_at"     t.datetime "remember_created_at"     t.integer  "sign_in_count",          default: 0,  null: false     t.datetime "current_sign_in_at"     t.datetime "last_sign_in_at"     t.inet     "current_sign_in_ip"     t.inet     "last_sign_in_ip"     t.datetime "created_at"     t.datetime "updated_at"     t.string   "name"     t.integer  "books_shared",           default: 0     t.integer  "books_read",             default: 0   end

books_shared books_count. no other instances of books_count

associations

class book < activerecord::base       belongs_to :user, counter_cache: true       validates :title, presence: true, length: {minimum: 3}       validates :author, presence: true       has_many :book_checkouts     end

by default rails looks pluralized associated model followed _count, in case books_count.

looks @ docs belongs_to here , counter_cache:

http://api.rubyonrails.org/classes/activerecord/associations/classmethods.html#method-i-belongs_to

you can specify custom column name counter_cache on book class so:

belongs_to :user, counter_cache: :books_shared


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