Store time periods as “3 days” or “7 weeks” in a database.
We use one simple varchar column in which we store the value as above in the format “<integer> <day|week|month|year>”.
First add the time_period gem to your Gemfile. Then run the bundle install command.
In the migration, define a string field
... t.string :duration_period ...
and migrate your database rake db:migrate
In the model, declare the field as ‘being a time period’:
class MyModel < ActiveRecord::Base ... time_period :duration_period, default: 7.days ... end
then, you get the following methods:
- duration_period – raw reader of the saved string.
- duration_period_unit – getter for the unit, i.e., “day”, “week”, …
- duration_period_unit= – setter for the unit, i.e., “day”, “week”, …
- duration_period_number – getter for the number, i.e., 1, 2, 3
- duration_period_number= – setter for the number, i.e., 1, 2, 3
- duration_period= – setter for the complete period, accepts either strings as above or ActiveSupport::Duration objects as 3.weeks
- duration_period_value – reads the value as an ActiveSupport::Duration object
>> m = MyModel.new >> m.duration_period_unit = "day" "day" >> m.duration_period => "0 day" >> m.duration_period_number = 7 => 7 >> m.duration_period => "7 day" >> m.duration_period_value => 7 days >> m.duration_period = '3 week' => "3 week" >> m.duration_period_value => 21 days
For simple_form forms, we offer an input:
<%= simple_form_for @my_thing do |f| %> ... <%= f.input :duration_period, as: :time_period %> ... <% end %>
The result then looks a little bit like this:
This is pretty much work-in-progress-without-reasonable-documentation. So if you use it, don’t complain ;)
Nevertheless, bug reports and improvements are highly appreciated:
Contributing to time_period
- Check out the latest master to make sure the feature hasn’t been implemented or the bug hasn’t been fixed yet
- Check out the issue tracker to make sure someone already hasn’t requested it and/or contributed it
- Fork the project
- Start a feature/bugfix branch
- Commit and push until you are happy with your contribution
- Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.
- Feel free to send a pull request if you think others (me, for example) would like to have your change incorporated into future versions of time_period.
Copyright © 2011-2012 Peter Horn, metaminded UG
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