Ruby-on-Rails：如何在 Rails 视图中显示所有“rake:about”数据？

Question

I would like to display the output of "rake:about" inside a Rails view.

Or all equivalent data into a view.

Is it feasible?

Answer 1

rake about is merely outputting the value of Rails::Info.to_s to stdout. You can thus use this data directly from Rails without invoking rake (neither inline nor via a shellout):

<%= Rails::Info.to_s %>

Since the data is intended for display in a text console, it is not directly suitable for HTML output. You can make it more readable by requesting HTML output with

<%= raw Rails::Info.to_html %>

or by just wrapping the whole block in <pre> tags so that it is shown similar to how it would look on the console:

<pre>
  <%= Rails::Info.to_s %>
</pre>

Finally, if you want to format the details yourself, you can get the raw properties shown by Rails::Info as an array of arrays with

Rails::Info.properties

Answer 2

You can use Backticks to execute system command. So inside view it would look like:

<%= `rake about` %>