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Dynamically add useful timestamp scopes to your ActiveRecord models!

It's not hard to write queries to scope your models by their timestamps, like this:

  Post.where('created_at > ?', 1.hour.ago)

But I thought it would be nice if there were a nicer, easier to read syntax for doing it:

  Post.created(after: 1.hour.ago)
  
  # or:
  
  Post.updated(before: 1.day.ago)

Read on if this sounds like something you want in your project!

Add this line to your application's Gemfile:

gem 'timestamp_scopes'

And then execute:

$ bundle

Or install it yourself as:

$ gem install timestamp_scopes

In any of your ActiveRecord models, you need to call the add_timestamp_scopes macro, like this:

class Post < ActiveRecord::Base
  add_timestamp_scopes

And now you will have the created and updated timestamp scopes.

You can pass a list of scope names to the add_timestamp_scopes method:

class Post < ActiveRecord::Base
  add_timestamp_scopes :created, :updated, :posted, :approved

And now your Post model will have the .posted and .approved scopes, referring to the posted_at and approved_at columns, respectively.

Once you have a scope in your model, you can combine several timestamp constraints on that scope.

Currently the constraints available are :before and :after.

Post.created(after: 1.day.ago) == Post.where('created_at > ?', 1.day.ago)

Post.created(before: 1.day.ago) == Post.where('created_at < ?', 1.day.ago)

Some scope syntaxes that might be added in a future release are:

Post.created(between: 2.days.ago, and: 1.day.ago)

Post.created(on: 1.day.ago)

Post.created(:yesterday)

Post.created(:last_week)

Post.created(:last_month)

Please submit an issue if you think of a cool new syntax that you think timestamp_scopes should support.

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

timestamp_scopes is written and maintained by Jake Moffatt (@jakeonrails)