Heroku 没有将符号隐式转换为整数错误
Heroku no implicit conversion of Symbol into Integer Error
我收到以下错误：heroku run rake db:migrate
Migrating to CreateResults (20150306174427)
== 20150306174427 CreateResults: migrating ====================================
-- create_table(:results)
-> 0.0479s
-- add_foreign_key(:results, :quantifieds, :users)
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:
no implicit conversion of Symbol into Integer/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0.rc3/lib/active_record/connection_adapters/abstract/schema_statements.rb:707:in `[]'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0.rc3/lib/active_record/connection_adapters/abstract/schema_statements.rb:707:in `add_foreign_key'
我无法理解，因为 run rake db:migrate 有效。
class CreateResults < ActiveRecord::Migration
def change
create_table :results do |t|
t.string :result_value
t.date :date_value
t.belongs_to :quantified, index: true
t.references :user, index: true
t.timestamps null: false
end
add_foreign_key :results, :quantifieds, :users
add_index :results, [:user_id, :created_at]
end
end
class CreateQuantifieds < ActiveRecord::Migration
def change
create_table :quantifieds do |t|
t.string :categories
t.string :metric
t.references :user, index: true
t.timestamps null: false
end
add_foreign_key :quantifieds, :users
add_index :quantifieds, [:user_id, :created_at]
end
end
# encoding: UTF-8
# This file is auto-generated from the current state of the database. Instead
# of editing this file, please use the migrations feature of Active Record to
# incrementally modify your database, and then regenerate this schema definition.
#
# Note that this schema.rb definition is the authoritative source for your
# database schema. If you need to create the application database on another
# system, you should be using db:schema:load, not running all the migrations
# from scratch. The latter is a flawed and unsustainable approach (the more migrations
# you'll amass, the slower it'll run and the greater likelihood for issues).
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 20150306174427) do
create_table "days", force: true do |t|
t.integer "level_id"
t.integer "habit_id"
t.boolean "missed", default: false
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "goals", force: true do |t|
t.string "name"
t.date "deadline"
t.boolean "accomplished"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "goals", ["user_id", "created_at"], name: "index_goals_on_user_id_and_created_at"
add_index "goals", ["user_id"], name: "index_goals_on_user_id"
create_table "habits", force: true do |t|
t.datetime "left"
t.integer "level"
t.text "committed"
t.datetime "date_started"
t.string "trigger"
t.string "target"
t.string "reward"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "habits", ["user_id", "created_at"], name: "index_habits_on_user_id_and_created_at"
add_index "habits", ["user_id"], name: "index_habits_on_user_id"
create_table "levels", force: true do |t|
t.integer "user_id"
t.integer "habit_id"
t.integer "days_needed"
t.boolean "passed", default: false
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "quantifieds", force: true do |t|
t.string "categories"
t.string "metric"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "quantifieds", ["user_id", "created_at"], name: "index_quantifieds_on_user_id_and_created_at"
add_index "quantifieds", ["user_id"], name: "index_quantifieds_on_user_id"
create_table "relationships", force: true do |t|
t.integer "follower_id"
t.integer "followed_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "relationships", ["followed_id"], name: "index_relationships_on_followed_id"
add_index "relationships", ["follower_id", "followed_id"], name: "index_relationships_on_follower_id_and_followed_id", unique: true
add_index "relationships", ["follower_id"], name: "index_relationships_on_follower_id"
create_table "results", force: true do |t|
t.string "result_value"
t.date "date_value"
t.integer "quantified_id"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "results", ["quantified_id"], name: "index_results_on_quantified_id"
add_index "results", ["user_id", "created_at"], name: "index_results_on_user_id_and_created_at"
add_index "results", ["user_id"], name: "index_results_on_user_id"
create_table "taggings", force: true do |t|
t.integer "tag_id"
t.integer "taggable_id"
t.string "taggable_type"
t.integer "tagger_id"
t.string "tagger_type"
t.string "context", limit: 128
t.datetime "created_at"
end
add_index "taggings", ["tag_id", "taggable_id", "taggable_type", "context", "tagger_id", "tagger_type"], name: "taggings_idx", unique: true
add_index "taggings", ["taggable_id", "taggable_type", "context"], name: "index_taggings_on_taggable_id_and_taggable_type_and_context"
create_table "tags", force: true do |t|
t.string "name"
t.integer "taggings_count", default: 0
end
add_index "tags", ["name"], name: "index_tags_on_name", unique: true
create_table "users", force: true do |t|
t.string "name"
t.string "email"
t.text "missed_days"
t.text "missed_levels"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "password_digest"
t.string "remember_digest"
t.boolean "admin", default: false
t.string "activation_digest"
t.boolean "activated", default: false
t.datetime "activated_at"
t.string "reset_digest"
t.datetime "reset_sent_at"
end
add_index "users", ["email"], name: "index_users_on_email", unique: true
create_table "valuations", force: true do |t|
t.string "name"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "valuations", ["user_id", "created_at"], name: "index_valuations_on_user_id_and_created_at"
add_index "valuations", ["user_id"], name: "index_valuations_on_user_id"
end
更新
使这些更改生效：
$ heroku pg:reset DATABASE
$ heroku rake db:migrate
class CreateResults < ActiveRecord::Migration
def change
create_table :results do |t|
t.string :result_value
t.date :date_value
t.integer :quantified_id
t.timestamps null: false
end
end
end
非常感谢您的帮助！ 对于另一个令人困惑的问题，请查看：
t.belongs_to
无效，您需要 references 或将其更改为 integer 并在字段名称中添加 _id。然后在您的索引上，在第二个和第三个参数周围添加方括号。
我收到以下错误：heroku run rake db:migrate
Migrating to CreateResults (20150306174427)
== 20150306174427 CreateResults: migrating ====================================
-- create_table(:results)
-> 0.0479s
-- add_foreign_key(:results, :quantifieds, :users)
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:
no implicit conversion of Symbol into Integer/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0.rc3/lib/active_record/connection_adapters/abstract/schema_statements.rb:707:in `[]'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.0.rc3/lib/active_record/connection_adapters/abstract/schema_statements.rb:707:in `add_foreign_key'
我无法理解，因为 run rake db:migrate 有效。
class CreateResults < ActiveRecord::Migration
def change
create_table :results do |t|
t.string :result_value
t.date :date_value
t.belongs_to :quantified, index: true
t.references :user, index: true
t.timestamps null: false
end
add_foreign_key :results, :quantifieds, :users
add_index :results, [:user_id, :created_at]
end
end
class CreateQuantifieds < ActiveRecord::Migration
def change
create_table :quantifieds do |t|
t.string :categories
t.string :metric
t.references :user, index: true
t.timestamps null: false
end
add_foreign_key :quantifieds, :users
add_index :quantifieds, [:user_id, :created_at]
end
end
# encoding: UTF-8
# This file is auto-generated from the current state of the database. Instead
# of editing this file, please use the migrations feature of Active Record to
# incrementally modify your database, and then regenerate this schema definition.
#
# Note that this schema.rb definition is the authoritative source for your
# database schema. If you need to create the application database on another
# system, you should be using db:schema:load, not running all the migrations
# from scratch. The latter is a flawed and unsustainable approach (the more migrations
# you'll amass, the slower it'll run and the greater likelihood for issues).
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 20150306174427) do
create_table "days", force: true do |t|
t.integer "level_id"
t.integer "habit_id"
t.boolean "missed", default: false
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "goals", force: true do |t|
t.string "name"
t.date "deadline"
t.boolean "accomplished"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "goals", ["user_id", "created_at"], name: "index_goals_on_user_id_and_created_at"
add_index "goals", ["user_id"], name: "index_goals_on_user_id"
create_table "habits", force: true do |t|
t.datetime "left"
t.integer "level"
t.text "committed"
t.datetime "date_started"
t.string "trigger"
t.string "target"
t.string "reward"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "habits", ["user_id", "created_at"], name: "index_habits_on_user_id_and_created_at"
add_index "habits", ["user_id"], name: "index_habits_on_user_id"
create_table "levels", force: true do |t|
t.integer "user_id"
t.integer "habit_id"
t.integer "days_needed"
t.boolean "passed", default: false
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "quantifieds", force: true do |t|
t.string "categories"
t.string "metric"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "quantifieds", ["user_id", "created_at"], name: "index_quantifieds_on_user_id_and_created_at"
add_index "quantifieds", ["user_id"], name: "index_quantifieds_on_user_id"
create_table "relationships", force: true do |t|
t.integer "follower_id"
t.integer "followed_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "relationships", ["followed_id"], name: "index_relationships_on_followed_id"
add_index "relationships", ["follower_id", "followed_id"], name: "index_relationships_on_follower_id_and_followed_id", unique: true
add_index "relationships", ["follower_id"], name: "index_relationships_on_follower_id"
create_table "results", force: true do |t|
t.string "result_value"
t.date "date_value"
t.integer "quantified_id"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "results", ["quantified_id"], name: "index_results_on_quantified_id"
add_index "results", ["user_id", "created_at"], name: "index_results_on_user_id_and_created_at"
add_index "results", ["user_id"], name: "index_results_on_user_id"
create_table "taggings", force: true do |t|
t.integer "tag_id"
t.integer "taggable_id"
t.string "taggable_type"
t.integer "tagger_id"
t.string "tagger_type"
t.string "context", limit: 128
t.datetime "created_at"
end
add_index "taggings", ["tag_id", "taggable_id", "taggable_type", "context", "tagger_id", "tagger_type"], name: "taggings_idx", unique: true
add_index "taggings", ["taggable_id", "taggable_type", "context"], name: "index_taggings_on_taggable_id_and_taggable_type_and_context"
create_table "tags", force: true do |t|
t.string "name"
t.integer "taggings_count", default: 0
end
add_index "tags", ["name"], name: "index_tags_on_name", unique: true
create_table "users", force: true do |t|
t.string "name"
t.string "email"
t.text "missed_days"
t.text "missed_levels"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "password_digest"
t.string "remember_digest"
t.boolean "admin", default: false
t.string "activation_digest"
t.boolean "activated", default: false
t.datetime "activated_at"
t.string "reset_digest"
t.datetime "reset_sent_at"
end
add_index "users", ["email"], name: "index_users_on_email", unique: true
create_table "valuations", force: true do |t|
t.string "name"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "valuations", ["user_id", "created_at"], name: "index_valuations_on_user_id_and_created_at"
add_index "valuations", ["user_id"], name: "index_valuations_on_user_id"
end
更新
使这些更改生效：
$ heroku pg:reset DATABASE
$ heroku rake db:migrate
class CreateResults < ActiveRecord::Migration
def change
create_table :results do |t|
t.string :result_value
t.date :date_value
t.integer :quantified_id
t.timestamps null: false
end
end
end
非常感谢您的帮助！ 对于另一个令人困惑的问题，请查看：
t.belongs_to
无效，您需要 references 或将其更改为 integer 并在字段名称中添加 _id。然后在您的索引上，在第二个和第三个参数周围添加方括号。