在 irb 中模拟为 Active Storage 选择文件

Question

正在为 Active Storage 创建一个新项目。

<!-- app/views/docs/_form.html.erb -->
  <%= f.label :image, "Select document or image that support this information." %>
  <%= f.file_field  :image %>

我在单击 Create 时遇到 Please review the problems below 错误，我想看看 irb 中发生了什么错误。但是如何模拟上面的步骤呢

型号：

# models/doc.rb
class Doc < ApplicationRecord
  has_one_attached :image # Active Storage
  belongs_to :source
  belongs_to :docable, polymorphic: true

# models/source.rb
class Source < ApplicationRecord
  has_many :docs

# models/year.rb
class Year < ApplicationRecord
  belongs_to :location
  belongs_to :person
  has_many :docs, as: :docable

# models/person.rb
class Person < ApplicationRecord
  has_many :years, dependent: :destroy
  has_many :locations, through: :years
  has_many :docs, as: :docable

# models/location.rb
class Location < ApplicationRecord
  has_many :years
  has_many :people, through: :years
  has_many :docs, as: :docable

一个人在某个日期生活或工作的地方以年为单位。年、人和地点使用 doc 来显示该信息的参考。来源是一本旧书的书名，我正在对书中的各个页面进行成像。稍后我使用 docable 引用这些图像（这是计划）。

db/structure.sql: CREATE INDEX index_docs_on_docable_type_and_docable_id ON public.docs USING btree (docable_type, docable_id);

这是session：

irb(main):100:0> doc = Doc.new
=> #<Doc id: nil, source_id: nil, page_no: nil, original_url: nil, basename: nil, created_at: nil, updated_at: nil, notes: nil, docable_id: nil, docable_type: nil>
irb(main):101:0> doc.save
=> false
irb(main):102:0> doc.errors.messages
=> {:source=>["must exist"], :docable=>["must exist"]}
 irb(main):104:0> doc.source_id = 4
=> 4
irb(main):105:0> doc.save
   (42.8ms)  BEGIN
  Source Load (45.3ms)  SELECT "sources".* FROM "sources" WHERE "sources"."id" =  LIMIT   [["id", 4], ["LIMIT", 1]]
   (0.2ms)  ROLLBACK
=> false
irb(main):106:0> doc.errors.messages
=> {:docable=>["must exist"]}
irb(main):107:0> doc.image =

我可能对多态关系有问题，所以我正在尝试解决这个问题。

Answer 1

https://edgeguides.rubyonrails.org/active_storage_overview.html#attaching-file-io-objects

doc.image.attach(io: File.open('/path/to/file'), filename: 'file.jpg')

在 irb 中模拟为 Active Storage 选择文件

Simulating selecting a file for Active Storage in irb

debugging

polymorphism

ruby-on-rails

irb

rails-activestorage