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    jQuery

6.3 add some debug info to the layouts, rails environment.

 
阅读更多

 

<html>
  <body>
    <div class="container">
      <%= render 'layouts/footer'%>
      <%= debug(params) if Rails.env.development? %>
    </div>
  </body>
</html>

 

since we don't want to display the debug info to a deployed application, we use 

 

if Rails.env.development?

 

to restrict the debug info to dev environment.

 

(rails console   ---------------> this will start as dev environment)

(rails console test   ---------------> this will start as test environment)

(rails console production   ---------------> this will start as production environment)

 

(rails server    )

(rails server --environment product     )

(rails server --environment test    )

 

(rake db:migrate RAILS_ENV=production    )

(rake db:migrate RAILS_ENV=test)

 

(it is confusing that the three command are using diff format to specify env, worth to remember it.)

 

 

also, if you are using heroku, you can also start heroku console:


heroku console


Rails.env

====> "production"

Rails.env.production?

====> true

 

 

 

 

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