blocks|key|404604|text|只需在脚本中使用environment.rb即可。如果您的脚本位于Rails应用程序的script目录中，请执行以下操作|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|404605|require+File.expand_path('../../config/environment',+__FILE__)|code-block|syntax|javascript|404606|您可以通过在运行脚本时设置RAILS_ENV环境变量来控制所使用的环境(开发/测试/生产)。|404607|RAILS_ENV=production+ruby+script/test.rb|404608|entityMap^0|8|E|17|6|0|0|D|9|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

Simply require <code>environment.rb</code> in your script. If your script is located in the <code>script</code> directory of your Rails app do

<pre><code>require File.expand_path('../../config/environment', __FILE__)
</code></pre>

You can control the environment used (development/test/production) by setting the <code>RAILS_ENV</code> environment variable when running the script.

<pre><code>RAILS_ENV=production ruby script/test.rb
</code></pre>

blocks|key|404669|text|最简单的方法是使用rails+runner，因为您不需要修改脚本。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|404670|http://guides.rubyonrails.org/command_line.html#rails-runner|404671|就说rails+runner+script.rb吧|404672|entityMap|0|LINK|mutability|MUTABLE|url^0|9|C|0|0|1O|0|0|2|M|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@$9|U|A|V|1|W]]|E|$]]|$1|H|3|I|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|G]]]]

The simplest way is with <code>rails runner</code> because you don't need to modify your script.

<a href="http://guides.rubyonrails.org/command_line.html#rails-runner" rel="noreferrer">http://guides.rubyonrails.org/command_line.html#rails-runner</a>

Just say <code>rails runner script.rb</code>

blocks|key|404772|text|Runner在Rails的上下文中以非交互方式运行Ruby代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|404773|在rails+runner命令中：|style|CODE|404774|Usage:+runner+[options]+('Some.ruby(code)'+or+a+filename)

++++-e,+--environment=name+++++++++++Specifies+the+environment+for+the+runner+to+operate+under+(test/development/production).
+++++++++++++++++++++++++++++++++++++Default:+development

++++-h,+--help+++++++++++++++++++++++Show+this+help+message.|code-block|syntax|javascript|404775|您还可以使用runner作为脚本的示例行，如下所示：|404776|-------------------------------------------------------------
#!/usr/bin/env+/Users/me/rails_project/script/rails+runner

Product.all.each+{+%7Cp%7C+p.price+*=+2+;+p.save!+}
-------------------------------------------------------------|404777|entityMap|0|LINK|mutability|MUTABLE|url|http://guides.rubyonrails.org/command_line.html#rails-runner^0|0|6|0|0|1|C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@$A|13|B|14|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|15|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|16|8|@]|9|@]|C|$]]|$1|O|3|P|5|J|7|17|8|@]|9|@]|C|$K|L]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

<a href="http://guides.rubyonrails.org/command_line.html#rails-runner" rel="noreferrer">Runner</a> runs Ruby code in the context of Rails non-interactively.

From <code>rails runner</code> command:

<pre><code>Usage: runner [options] ('Some.ruby(code)' or a filename)

 -e, --environment=name Specifies the environment for the runner to operate under (test/development/production).
 Default: development

 -h, --help Show this help message.
</code></pre>

You can also use runner as a shebang line for your scripts like this:

<pre><code>-------------------------------------------------------------
#!/usr/bin/env /Users/me/rails_project/script/rails runner

Product.all.each { |p| p.price *= 2 ; p.save! }
-------------------------------------------------------------
</code></pre>

blocks|key|620567|text|这是一个老问题，但在我看来，我经常发现创建一个rake任务是有帮助的……这实际上非常简单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|620568|在lib/tasks/example.rake中：|offset|length|style|CODE|620569|namespace+:example+do

desc+"Sample+description+you'd+see+if+you+ran:+'rake+--tasks'+in+the+terminal"
task+create_user:+:environment+do
++User.create!+first_name:+"Foo",+last_name:+"Bar"
end|code-block|syntax|javascript|620570|然后在终端运行：|620571|rake+example:create_user|620572|在本地，这将在您的开发数据库的上下文中运行，如果在Heroku上运行，它将在连接到您的生产数据库时运行。我发现这对帮助迁移或修改表特别有用。|620573|entityMap^0|0|1|M|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@$D|W|E|X|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|Y|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

This is an old question, but in my opinion I often find it helpful to create a rake task... and it's actually very easy. 

In <code>lib/tasks/example.rake</code>: 

<pre><code>namespace :example do

desc "Sample description you'd see if you ran: 'rake --tasks' in the terminal"
task create_user: :environment do
 User.create! first_name: "Foo", last_name: "Bar"
end
</code></pre>

And then in the terminal run: 

<pre><code>rake example:create_user
</code></pre>

Locally this will be run in the context of your development database, and if run on Heroku it will be run while connected to your production database. I find this especially useful to assist with migrations, or modified tables.

I want to run a Ruby file in the context of a Rails environment.
rails runner almost does what I want to do, but I'd like to just give it the file name and arguments. I'm pretty sure this is possible since I've done it before. Can someone remind me how to do this?

How do I run a Ruby file in a Rails environment?

数据库

我想在Rails环境的上下文中运行Ruby文件。rails runner几乎完成了我想要做的事情，但我只想给它指定文件名和参数。我很确定这是可能的，因为我以前做过。有人能提醒我怎么做吗？

问如何在Rails环境中运行Ruby文件？
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