I can not create a user through the console PG::UndefinedTable: ERROR: relation "team_members" does not exist

Question

我无法创建用户，出现错误。

我正在尝试添加另一个模型，但无法将其连接到数据库，出现错误且无法执行 Rails db: migrate

team_members.rb

class TeamMember < ApplicationRecord  
end

我正在尝试运行在控制台中执行命令并创建用户，但出现此错误。 TeamMember.create(电子邮件:"a@a.a")

ActiveRecord::StatementInvalid: PG::UndefinedTable: ERROR:  relation "team_members" does not exist
LINE 8:                WHERE a.attrelid = '"team_members"'::regclass
                                          ^
:               SELECT a.attname, format_type(a.atttypid, a.atttypmod),
                     pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod,
                     c.collname, col_description(a.attrelid, a.attnum) AS comment
                FROM pg_attribute a
                LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum
                LEFT JOIN pg_type t ON a.atttypid = t.oid
                LEFT JOIN pg_collation c ON a.attcollation = c.oid AND a.attcollation <> t.typcollation
               WHERE a.attrelid = '"team_members"'::regclass
                 AND a.attnum > 0 AND NOT a.attisdropped
               ORDER BY a.attnum
from /home/*/.rvm/gems/ruby-2.5.1/gems/activerecord-5.2.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:63:in `async_exec'

schema.rb

ActiveRecord::Schema.define(version: 2018_09_12_142120) do

  # These are extensions that must be enabled in order to support this database
  enable_extension "plpgsql"

  create_table "active_admin_comments", force: :cascade do |t|
    t.string "namespace"
    t.text "body"
    t.string "resource_type"
    t.bigint "resource_id"
    t.string "author_type"
    t.bigint "author_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["author_type", "author_id"], name: "index_active_admin_comments_on_author_type_and_author_id"
    t.index ["namespace"], name: "index_active_admin_comments_on_namespace"
    t.index ["resource_type", "resource_id"], name: "index_active_admin_comments_on_resource_type_and_resource_id"
  end

  create_table "admin_users", force: :cascade do |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", null: false
    t.datetime "updated_at", null: false
    t.index ["email"], name: "index_admin_users_on_email", unique: true
    t.index ["reset_password_token"], name: "index_admin_users_on_reset_password_token", unique: true
  end

end

Answer 1

您的数据库中没有 team_members table，因此您无法创建 TeamMember。

如果您想创建这个，您可以运行这个命令（例如）；

rails g model TeamMember email:string

它将生成迁移文件 (db/migrate/20180914074925_create_team_members.rb) 以及 app/models/team_member.rb

在rails db:migrate之后就可以通过控制台创建了

I can not create a user through the console PG::UndefinedTable: ERROR: relation "team_members" does not exist

I can not create a user through the console PG::UndefinedTable: ERROR: relation "team_members" does not exist

ruby-on-rails

pg

ruby-on-rails-5.2