[英]hanami-model integration to ruby project
我的應用程序的結構:
.
├── config
│ ├── boot.rb
│ └── environment.rb
├── Gemfile
├── Gemfile.lock
├── lib
│ ├── entities
│ │ └── account.rb
│ └── repositories
│ └── account_repository.rb
└── README.md
寶石檔案:
source 'https://rubygems.org'
gem 'pg', '~> 1.1'
gem 'dotenv'
gem 'byebug'
gem 'hanami-model'
配置/環境.rb:
require 'bundler/setup'
require 'hanami/model'
require 'dotenv/load'
class App
class << self
def boot
Mutex.new.synchronize do
Hanami::Model.configure do
adapter :sql, ENV['DATABASE_URL']
end.load!
end
end
end
end
配置/boot.rb:
require_relative './environment'
App.boot
lib/entities/account.rb:
require 'hanami/model'
require_relative '../repositories/account_repository'
class Account < Hanami::Entity
end
lib/repositories/account_repository.rb:
require 'hanami/model'
require_relative '../entities/account'
class AccountRepository < Hanami::Repository
self.relation = :accounts
end
在控制台中,我運行以下代碼,但出現錯誤:
irb -I .
irb(main):001:0> require 'config/boot'
=> true
irb(main):002:0> require 'lib/repositories/account_repository'
=> true
irb(main):003:0> rep = AccountRepository.new
Traceback (most recent call last):
6: from /home/mvalitov/.asdf/installs/ruby/2.5.1/bin/irb:11:in `<main>'
5: from (irb):3
4: from (irb):3:in `new'
3: from /home/mvalitov/.asdf/installs/ruby/2.5.1/lib/ruby/gems/2.5.0/gems/hanami-model-1.3.2/lib/hanami/repository.rb:420:in `initialize'
2: from /home/mvalitov/.asdf/installs/ruby/2.5.1/lib/ruby/gems/2.5.0/gems/rom-repository-1.4.0/lib/rom/repository/root.rb:62:in `initialize'
1: from /home/mvalitov/.asdf/installs/ruby/2.5.1/lib/ruby/gems/2.5.0/gems/rom-3.3.3/lib/rom/registry.rb:30:in `fetch'
ArgumentError (key cannot be nil)
我究竟做錯了什么? 如果您將所有實體代碼和存儲庫放在一個文件中,則代碼運行時不會出錯。
問題在於加載順序。
以下是有關文檔中嚴格順序的說明:
使用 sql 適配器時,必須在 Hanami::Model.load 之前要求 hanami/model/sql! 被調用以便正確加載關系。
來源: https : //github.com/hanami/model#mapping
因此,對於您的情況,需要在所有聲明后運行App.boot
。
詳細說明:
如果將所有代碼放在一個文件中,您會看到不同之處:
# run.rb
require 'bundler/setup'
require 'hanami/model'
require 'dotenv/load'
class App
class << self
def boot
Mutex.new.synchronize do
Hanami::Model.configure do
adapter :sql, 'postgresql://postgres:12345@localhost:5432/mame-challenge_development'
path '/home/mifrill/Documents/source/hamani-bug'
end.load!
end
end
end
end
App.boot
class AccountRepository < Hanami::Repository
self.relation = :accounts
end
class Account < Hanami::Entity
end
AccountRepository.new
ruby run.rb
gems/rom-3.3.3/lib/rom/registry.rb:30:in `fetch': key cannot be nil (ArgumentError)
在 Repository 和 Entity 定義之后移動App.boot
,如下所示:
require 'bundler/setup'
require 'hanami/model'
require 'dotenv/load'
class App
class << self
def boot
Mutex.new.synchronize do
Hanami::Model.configure do
adapter :sql, 'postgresql://postgres:12345@localhost:5432/mame-challenge_development'
path '/home/mifrill/Documents/source/hamani-bug'
end.load!
end
end
end
end
class AccountRepository < Hanami::Repository
self.relation = :accounts
end
class Account < Hanami::Entity
end
App.boot
AccountRepository.new
ruby run.rb
{:accounts=>#<ROM::Relation[Accounts] name=accounts dataset=#<Sequel::Postgres::Dataset: "SELECT * FROM \"accounts\"">>
您缺少“根”配置/選項(我不太了解,因為我不使用Hanami)。
查看堆棧跟蹤:
fetch
具有別名:[]
(所有鏈接都指向最新,因為我很懶:))
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