Before I start, I should say I have already checked out Rails 5.1.: destroy records in "has_many: through" association with restriction and has_many through association dependent destroy under condition of who called destroy without results.
My app consist in USERS that has_one EMPRESA. An EMPRESA may have several TAGS A TAG may have several EMPRESAS (To do this I have used has_many :through)
My case: I got this screen error:
And I know the origin of this error is because I'm trying to destroy items with pending references. But I can't identify th issue.
By looking at server console I can guess the problem involve empresa, tag, and tagging.
Models involved
class Empresa < ApplicationRecord
skip_callback :validate, after: :create
after_initialize :set_default_plan, :if => :new_record?
attr_accessor :tag_list
enum plan: [:noplan, :basic, :plus, :premium]
belongs_to :user
belongs_to :category, optional: true
has_many :promos, dependent: :destroy
has_many :taggings, dependent: :destroy
has_many :tags, through: :taggings
mount_uploader :logo, LogoUploader
mount_uploaders :fotos, FotosUploader
def tag_list
tags.join(", ")
end
def tag_list=(names)
tag_names = names.split(",").collect {|str| str.strip.downcase}.uniq
new_or_existing_tags = tag_names.collect {|tag_name| Tag.find_or_create_by(name: tag_name)}
self.tags = new_or_existing_tags
end
def set_default_plan
self.plan ||= :noplan
end
end
class Tag < ApplicationRecord
has_many :empresas, through: :taggings
has_many :taggings, dependent: :destroy
def to_s
name
end
end
class Tagging < ApplicationRecord
belongs_to :empresa
belongs_to :tag
end
class Category < ApplicationRecord
validates :name, presence: true, length:{ minimum: 3 }, uniqueness: true
has_many :empresas, dependent: :nullify
end
class User < ApplicationRecord
enum role: [:user, :editor, :admin, :superadmin]
after_initialize :set_default_role, :if => :new_record?
has_one :empresa, dependent: :destroy
has_many :incidents, dependent: :destroy
has_many :comments, dependent: :destroy
# Include default devise modules. Others available are:
# :confirmable, :lockable, :timeoutable and :omniauthable
def set_default_role
self.role ||= :user
end
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
end
schema.rb (irrelevant tables removed)
ActiveRecord::Schema.define(version: 20180531033550) do
enable_extension "plpgsql"
create_table "empresas", force: :cascade do |t|
t.string "logo"
t.string "name"
t.text "description"
t.text "excerpt"
t.string "address"
t.string "web"
t.string "email"
t.string "tel"
t.string "video"
t.json "fotos"
t.integer "plan", default: 0
t.float "mlon"
t.float "mlat"
t.string "schedule0"
t.string "schedule1"
t.string "schedule2"
t.string "schedule3"
t.string "schedule4"
t.string "schedule5"
t.string "schedule6"
t.string "schedule7"
t.string "schedule8"
t.string "schedule9"
t.string "schedule10"
t.string "schedule11"
t.string "schedule12"
t.string "schedule13"
t.string "schedule14"
t.string "schedule15"
t.string "schedule16"
t.string "schedule17"
t.string "schedule18"
t.string "schedule19"
t.string "schedule20"
t.string "schedule21"
t.string "schedule22"
t.string "schedule23"
t.string "schedule24"
t.string "schedule25"
t.string "schedule26"
t.string "schedule27"
t.integer "tag_id"
t.integer "offer_id"
t.integer "user_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "category_id"
t.index ["category_id"], name: "index_empresas_on_category_id", using: :btree
end
create_table "taggings", force: :cascade do |t|
t.integer "empresa_id"
t.integer "tag_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.index ["empresa_id"], name: "index_taggings_on_empresa_id", using: :btree
t.index ["tag_id"], name: "index_taggings_on_tag_id", using: :btree
end
create_table "tags", force: :cascade do |t|
t.string "name"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "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.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.integer "creditos", default: 0, null: false
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "empresa_id"
t.integer "role"
t.string "first_name"
t.string "last_name"
t.date "birthdate"
t.string "dni"
t.string "phone"
t.string "address"
t.string "gender"
t.index ["email"], name: "index_users_on_email", unique: true, using: :btree
t.index ["empresa_id"], name: "index_users_on_empresa_id", using: :btree
t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true, using: :btree
end
add_foreign_key "comments", "incidents"
add_foreign_key "comments", "users"
add_foreign_key "incidents", "users"
add_foreign_key "promos", "empresas"
add_foreign_key "taggings", "empresas"
add_foreign_key "taggings", "tags"
add_foreign_key "users", "empresas"
end
