Add ability to reset connection

[delphaber]

Hello! Thanks for this gem :)

I'm wondering if you are interested into merging something like this. If so, I will try to add a test too.

Why do I think this method is useful?

Because I have a Rails application that uses multiple databases and I'm writing a rake task that wraps ruby-pg-extras and run the bloat command for each of our databases (5 databases at the moment).

Since the connection object is memoized, I'm not able to reset it after RubyPgExtras.database_url= as been called the first time. So, by being able to reset the connection, I'm able to call RubyPgExtras.database_url= multiple times, one for each database

What do you think? Is it something that you might consider?

[pawurb]

@delphaber hi, thanks for the PR! Sure, it's useful. But maybe you could include this reseting logic in database_url= instead?

[delphaber]

I see. So, instead of having an explicit method to close the connection and nilify @_connection, we do it implicitly in database_url= method, like this

  def self.database_url=(value)
    @_connection&.close
    @_connection = nil
    @@database_url = value
  end

Have I understood it correctly?

[delphaber]

Tests are passing locally

Finished in 0.33192 seconds (files took 0.06875 seconds to load)
145 examples, 0 failures

But need approval to run on CI

I hope this helps!

[pawurb]

thanks! It's released as 5.6.17