通过dry-validation验证Rails控制器参数

Question

我第一次尝试使用dry validation gem。

我想创建一个多模型(用户、地址、公司)的表单

我决定使用一个干式验证器，但是我不能验证表单。我收到验证程序错误“：user=>”必须是哈希“”

如何让它工作？

应用程序/控制器/用户_控制器.rb

class UsersController < ApplicationController
  def new
    @user = User.new
    @user.address = Address.new
    @user.company = Company.new
    @user.company.address = Address.new
  end

  def create
    @user = User.new
    validation = UserValidator::UserSchema.call(params)
    if validation.success?
      @user.attributes = validation.output[:user]
      @user.save
      redirect_to new_user_path, notice: 'Form send!'
    else
      redirect_to new_user_path, warning: "#{validation.errors}"
    end
 end
end

app/model/user.rb

class User < ApplicationRecord
  has_one :company
  has_one :address, as: :addressable
  accepts_nested_attributes_for :company, :address
end

app/validators/user_validator

class UserValidator
  UserSchema = Dry::Validation.Params do
    required(:user).schema do
      required('first_name').filled
    end
  end
end

在创建操作中打印参数输出：

<ActionController::Parameters {"utf8"=>"✓","authenticity_token"=>"Dszr0k90aklK1NC4uGcemAl+yFa9ppMDo/gCLJt2wC1WjTgLC+NFebRqm6iqtVTnQzRgd7v0icntxETbxJ7v9g==", "user"=>{"first_name"=>"Test", "last_name"=>"asdasdasdasd", "email_address"=>"sadasdasd", "date_of_birth"=>"sdasda", "phone_number"=>"", "address_attributes"=>{"street"=>"dadadadsdad", "city"=>"asdasdad", "zip_code"=>"dasd", "country"=>"adsa"}, "company_attributes"=>{"name"=>"", "address_attributes"=>{"street"=>"", "city"=>"", "zip_code"=>"", "country"=>""}}}, "commit"=>"Submit", "controller"=>"users", "action"=>"create"} permitted: false>

Answer 1

dry-validation (和dry-schema)不接受ActionController::Parameters，您应该将其转换为哈希。

尝试使用params.to_unsafe_hash或params.permit(...).to_h