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ruby - 为什么我在部署到 Heroku 时收到“NameError: uninitialized constant Dotenv”？

问题描述

我正在尝试将一个简单的 Ruby 应用程序部署到 Heroku。我在发布日志中不断收到此错误，如下所示：

rake aborted!
NameError: uninitialized constant Dotenv
/app/config/environment.rb:5:in `<top (required)>'
/app/Rakefile:3:in `require_relative'
/app/Rakefile:3:in `<top (required)>'
/app/vendor/bundle/ruby/2.7.0/gems/rake-13.0.1/exe/rake:27:in `<top (required)>'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/cli/exec.rb:63:in `load'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/cli/exec.rb:63:in `kernel_load'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/cli/exec.rb:28:in `run'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/cli.rb:474:in `exec'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/vendor/thor/lib/thor.rb:392:in `dispatch'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/cli.rb:30:in `dispatch'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/vendor/thor/lib/thor/base.rb:485:in `start'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/cli.rb:24:in `start'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/exe/bundle:49:in `block in <top (required)>'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/lib/bundler/friendly_errors.rb:128:in `with_friendly_errors'
/app/vendor/bundle/ruby/2.7.0/gems/bundler-2.2.21/exe/bundle:37:in `<top (required)>'
/app/vendor/bundle/bin/bundle:113:in `load'
/app/vendor/bundle/bin/bundle:113:in `<main>'
(See full trace by running task with --trace)

我已经用谷歌搜索了一堆并尝试了每一个建议，但我似乎无法解决它。作为参考，这是我的 Gemfile：

source 'http://rubygems.org'

gem 'sinatra'
gem 'activerecord', "< 6", :require => 'active_record'
gem 'sinatra-activerecord', :require => 'sinatra/activerecord'
gem 'rake'
gem 'require_all'
gem 'thin'
gem 'bcrypt'
gem 'sinatra-flash'
gem 'rails_12factor'
gem 'foreman'

group :development, :test do 
  gem 'sqlite3', '<1.4'
  gem 'shotgun'
  gem 'tux'
  gem 'pry'
  gem 'session_secret_generator'
  gem 'dotenv'
end

group :production do 
  gem 'pg', '0.20'
end

group :test do
  gem 'rspec'
  gem 'capybara'
  gem 'rack-test'
  gem 'database_cleaner', git: 'https://github.com/bmabey/database_cleaner.git'
end

这是我的配置/environment.rb：

ENV['SINATRA_ENV'] ||= "development"

require 'bundler/setup'
Bundler.require(:default, ENV['SINATRA_ENV'])
Dotenv.load if ENV['SINATRA_ENV'] == "development"

set :database_file, "./database.yml"

require './app/controllers/application_controller'
require_all 'app'

谢谢！

标签： rubyherokudotenv

解决方案

也许您错过了：在尝试 Dotenv.load 之前需要“dotenv”？

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