问题
I'm using the railstutorial at http://ruby.railstutorial.org/chapters/rails-flavored-ruby#sec:a_user_class
I've been told to type require './example_user' but... I get this error
LoadError: cannot load such file -- example_user
from /Users/snook3/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:251:in require'
and then further and further errors
I imagine that I'm not linking correctly to that folder, can anyone let me know where I should be linking too?
回答1:
Yes, just move the file to the actual root directoy. Doing mv example_user.rb* / should do it.
Also, don't worry if after requiring the file, you get a return of "true" instead of ["User"].
回答2:
You can use
Rails.root
to get your current Rails project root.
So
require Rails.root + 'path_to_example_user'
would load the file.
You can also try the reload! command, which will reload the whole Rails environment.
回答3:
The file should end with .rb:
require './example_user' #will not work
require './example_user.rb' #will work
To rename the file, use the following command line (not in the rails console):
mv example_user example_user.rb
回答4:
try using absolute path for the file... something like this:
require '/Users/snook3/my/project/folder/example_user.rb'
回答5:
No need to specify the full path, simply append .rb to the filename: require './example_user.rb'.
回答6:
I had this exact same problem, but not being very familiar with Unix I can only explain it like this.
1) I created the example_user.rb file in Sublime Text 2 and saved it to the application root folder.
2) The "require" wasn't working for me, just like the OP. Even though I could see the file there in the folder.
3) However, opening up a Terminal window, navigating to the application root, and entering "dir", I could then see that the filename had a "/ " before it!? Not sure how/why that happened, or why it wasn't visible in Explorer (or whatever the Unix equivalent of that is called--Nautilus?).
4) After renaming the file from within Terminal, it all worked. But would love an explanation of what went wrong if this makes sense to any of you Unix/Rails folks.
回答7:
Try
touch example_user.rb
in Unix terminal. And then add code to this file.
回答8:
The tutorial tells you to "create the file example_user.rb in your application root directory". I mistakenly initially put it in the app folder and got the same error message.
If you instead move the file into your project root directory, then require './example_user' will work.
来源：https://stackoverflow.com/questions/10616722/rails-console-error-require-example-user