的Rails：dotenv嵌套哈希

Question

我宣佈我.ENV文件這個變量

WARRANTY_DETAILS_PER_MAKE = {"dacia" => {duration: 3, mileage: 100000}, "honda" => {duration: 3, mileage: 100000}, "infiniti" => {duration: 3, mileage: 100000}, "jaguar" => {duration: 3, mileage: 0}, "land-rover"=> {duration: 3, mileage: 100000}, "lexus" => {duration: 3, mileage: 100000}, "mazda" => {duration: 3, mileage: 100000}, "mitsubishi" => {duration: 3, mileage: 100000}, "nissan" => {duration: 3, mileage: 100000}, "subaru" => {duration: 3, mileage: 100000}, "suzuki" => {duration: 3, mileage: 100000}, "toyota" => {duration: 3, mileage: 100000}} 

dotenv似乎並不明白這一點。

我在運行服務器時得到了這個。

/Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/psych.rb:370:in `parse': (<unknown>): did not find expected ',' or '}' while parsing a flow mapping at line 25 column 30 (Psych::SyntaxError) 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/psych.rb:370:in `parse_stream' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/psych.rb:318:in `parse' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/psych.rb:245:in `load' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/application.rb:391:in `secrets' 
    from /Users/mike/Documents/Projects/paycar/entre-nous/config/initializers/mail.rb:4:in `<top (required)>' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `block in load' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/engine.rb:652:in `block in load_config_initializer' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/activesupport-4.2.1/lib/active_support/notifications.rb:166:in `instrument' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/engine.rb:651:in `load_config_initializer' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/engine.rb:616:in `block (2 levels) in <class:Engine>' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/engine.rb:615:in `each' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/engine.rb:615:in `block in <class:Engine>' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/initializable.rb:30:in `instance_exec' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/initializable.rb:30:in `run' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/initializable.rb:55:in `block in run_initializers' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:418:in `block (2 levels) in each_strongly_connected_component_from' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:417:in `block in each_strongly_connected_component_from' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/initializable.rb:44:in `each' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/initializable.rb:44:in `tsort_each_child' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:411:in `call' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:411:in `each_strongly_connected_component_from' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:347:in `block in each_strongly_connected_component' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:345:in `each' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:345:in `call' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:345:in `each_strongly_connected_component' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:224:in `tsort_each' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/tsort.rb:205:in `tsort_each' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/initializable.rb:54:in `run_initializers' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/railties-4.2.1/lib/rails/application.rb:352:in `initialize!' 
    from /Users/mike/Documents/Projects/paycar/entre-nous/config/environment.rb:5:in `<top (required)>' 
    from /Users/mike/Documents/Projects/paycar/entre-nous/spec/rails_helper.rb:4:in `require' 
    from /Users/mike/Documents/Projects/paycar/entre-nous/spec/rails_helper.rb:4:in `<top (required)>' 
    from /Users/mike/Documents/Projects/paycar/entre-nous/spec/models/vehicle_spec.rb:23:in `require' 
    from /Users/mike/Documents/Projects/paycar/entre-nous/spec/models/vehicle_spec.rb:23:in `<top (required)>' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.2.2/lib/rspec/core/configuration.rb:1226:in `load' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.2.2/lib/rspec/core/configuration.rb:1226:in `block in load_spec_files' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.2.2/lib/rspec/core/configuration.rb:1224:in `each' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.2.2/lib/rspec/core/configuration.rb:1224:in `load_spec_files' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.2.2/lib/rspec/core/runner.rb:97:in `setup' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.2.2/lib/rspec/core/runner.rb:85:in `run' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.2.2/lib/rspec/core/runner.rb:70:in `run' 
    from /Users/mike/.rvm/rubies/ruby-2.1.5/lib/ruby/gems/2.1.0/gems/rspec-core-3.2.2/lib/rspec/core/runner.rb:38:in `invoke' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@global/gems/rspec-core-3.2.2/exe/rspec:4:in `<top (required)>' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@paycar-api/bin/rspec:23:in `load' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@paycar-api/bin/rspec:23:in `<main>' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@paycar-api/bin/ruby_executable_hooks:15:in `eval' 
    from /Users/mike/.rvm/gems/ruby-2.1.5@paycar-api/bin/ruby_executable_hooks:15:in `<main>' 

如果我爲了調試目的而將嵌套哈希值更改爲字符串，所有內容都可以順利運行。

是我的嵌套散列不正確的聲明還是它與dotenv的問題？

感謝您的幫助

Answer 1

DotEnv does not parse什麼比簡單的引用或unqouted值最殼如何處理ENV瓦爾這與其他一致。

LINE =/
    \A 
    (?:export\s+)? # optional export 
    ([\w\.]+)   # key 
    (?:\s*=\s*|:\s+?) # separator 
    (    # optional value begin 
    '(?:\'|[^'])*' # single quoted value 
    |    # or 
    "(?:\"|[^"])*" # double quoted value 
    |    # or 
    [^#\n]+   # unquoted value 
)?    # value end 
    (?:\s*\#.*)?  # optional comment 
    \z 
/x 

如果你真的不得不使用Ruby的哈希值，你可以引用它，並調用它的eval：

# .env 
FOO = '{ a: "b" }' 

# call it: 
foo = eval(ENV["FOO"]) 

或者使用JSON：

# .env 
FOO = '{ "a": "b" }' 

require 'json' 
begin 
    JSON.parse(ENV["FOO"]) 
rescue JSON::ParserError => e 
    logger.error('Failed to parse ENV[FOO].') 
    logger.error(e.msg) 
end 

但它看起來像你可能在工作中使用錯誤的工具，YML配置文件可能更合適。