+ struct
+ |> cast(params, [:bio, :email, :name, :nickname, :password, :password_confirmation])
+ |> validate_required([:name, :nickname, :password, :password_confirmation])
+ |> validate_confirmation(:password)
+ |> unique_constraint(:email)
+ |> unique_constraint(:nickname)
+ |> validate_exclusion(:nickname, Pleroma.Config.get([User, :restricted_nicknames]))
+ |> validate_format(:nickname, local_nickname_regex())
+ |> validate_format(:email, @email_regex)
+ |> validate_length(:bio, max: bio_limit)
+ |> validate_length(:name, min: 1, max: name_limit)
+ |> change_info(&User.Info.confirmation_changeset(&1, need_confirmation: need_confirmation?))
+ |> maybe_validate_required_email(opts[:external])
+ |> put_password_hash
+ |> put_ap_id()
+ |> unique_constraint(:ap_id)
+ |> put_following_and_follower_address()
+ end