Ruby on rails Rails在表上更新或删除；产品“；违反外键约束

我正在Rails上开发一个应用程序来销售一些产品，其中包含一个表用户、一个表产品和一个表评论，用户可以在其中对给定的产品编写自己的评论；现在我开始实现支付系统，从monetize gem开始，但是在我将price字段添加到Product表并运行rails db:seed之后，会导致与Reviews表发生冲突。。。需要一些建议。当前代码如下所示：

product.rb

class Product < ApplicationRecord
  has_one_attached :photo

  has_many :reviews, dependent: :nullify

  monetize :price_cents

  include PgSearch
  pg_search_scope :search_by_full_name, against: [:name]
end

class Review < ApplicationRecord
  belongs_to :user
  belongs_to :product
end

ActiveRecord::Schema.define(version: 2020_11_11_190245) do

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

  create_table "active_storage_attachments", force: :cascade do |t|
    t.string "name", null: false
    t.string "record_type", null: false
    t.bigint "record_id", null: false
    t.bigint "blob_id", null: false
    t.datetime "created_at", null: false
    t.index ["blob_id"], name: "index_active_storage_attachments_on_blob_id"
    t.index ["record_type", "record_id", "name", "blob_id"], name: "index_active_storage_attachments_uniqueness", unique: true
  end

  create_table "active_storage_blobs", force: :cascade do |t|
    t.string "key", null: false
    t.string "filename", null: false
    t.string "content_type"
    t.text "metadata"
    t.bigint "byte_size", null: false
    t.string "checksum", null: false
    t.datetime "created_at", null: false
    t.index ["key"], name: "index_active_storage_blobs_on_key", unique: true
  end

  create_table "products", force: :cascade do |t|
    t.string "name"
    t.string "description"
    t.datetime "created_at", precision: 6, null: false
    t.datetime "updated_at", precision: 6, null: false
    t.integer "price_cents", default: 0, null: false
  end

  create_table "reviews", force: :cascade do |t|
    t.text "description"
    t.bigint "user_id", null: false
    t.bigint "product_id", null: false
    t.datetime "created_at", precision: 6, null: false
    t.datetime "updated_at", precision: 6, null: false
    t.index ["product_id"], name: "index_reviews_on_product_id"
    t.index ["user_id"], name: "index_reviews_on_user_id"
  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.datetime "created_at", precision: 6, null: false
    t.datetime "updated_at", precision: 6, null: false
    t.string "first_name"
    t.string "last_name"
    t.string "phone_number"
    t.string "address"
    t.index ["email"], name: "index_users_on_email", unique: true
    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
  end

  add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
  add_foreign_key "reviews", "products"
  add_foreign_key "reviews", "users"
end

有时错误是这样的 PG:：NotNullViolation:错误：“产品id”列中的null值违反了非null约束

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感谢您的帮助

您的种子文件看起来怎么样？我想问题就在那里。它看起来像是在创造一些东西，从您共享的代码中，我会猜测

评论
属于
产品
，但它没有给出
产品id
，这就是为什么您会出现错误的原因。查找其来源，然后确保包含相关
产品的
product\u id
值。如果我运行rails console，每次查看时都会给我查看的id、用户id和所指产品的id，所以那部分是working@felipeecst下面是我的种子文件的一个示例：product=product.create（名称：“Hidratante下士em Barra”，描述：“leo de côco bio；Manteiga de karitébio；leo de baobab；Cera candelila；OE（benjoim；salva esclareia；香根草；s–ndalo amyris；依兰）”）file=URI.open（“）product.photo.attach（io:file，文件名：'product.jpg'，内容类型：'image/jpg'）