Microscope adds useful scopes targeting ActiveRecord boolean
, date
and datetime
fields.
Installation
Add this line to your application's Gemfile:
gem 'microscope'
Usage
create_table "events" do |t|
t.string "name"
t.boolean "special"
t.datetime "expired_at"
t.date "archived_on"
end
class Event < ActiveRecord::Base
acts_as_microscope
end
Event.special
# SELECT * FROM `events` where `events`.`special` = 1
Event.not_special
# SELECT * FROM `events` where `events`.`special` = 0
Time.now
# => 2013-07-05 15:43:42
Event.expired_before(2.months.ago)
# SELECT * FROM `events` where `events`.`expired_at` < '2013-05-05 15:43:42'
Event.expired_before_now
# SELECT * FROM `events` where `events`.`expired_at` < '2013-07-05 15:43:42'
Event.expired_after_or_now
# SELECT * FROM `events` where `events`.`expired_at` >= '2013-07-05 15:43:42'
Event.expired_after_or_at(2.months.from_now)
# SELECT * FROM `events` where `events`.`expired_at` >= '2013-09-05 15:43:42'
Event.expired_between(2.months.ago..1.month.from_now)
# SELECT * FROM `events` where `events`.`expired_at` BETWEEN '2013-05-05 15:43:42' AND '2013-08-05 15:43:42'
Event.archived_before(2.days.ago)
# SELECT * FROM `events` where `events`.`archived_on` < '2013-07-03'
Event.archived_between(2.days.ago..3.days.from_now)
# SELECT * FROM `events` where `events`.`archived_on` BETWEEN '2013-07-03' AND '2013-07-08'
Event.archived
# SELECT * FROM `events` where `events`.`archived_on` IS NOT NULL AND `events`.`archived_on` <= '2013-07-05 15:43:42'
Event.not_archived
# SELECT * FROM `events` where `events`.`archived_on` IS NULL OR `events`.`archived_on` > '2013-07-05 15:43:42'
Microscope also adds three instance methods to the model per scope.
event = Event.archived.first
# SELECT * FROM `events` where `events`.`archived_on` IS NOT NULL AND `events`.`archived_on` <= '2013-07-05 15:43:42' LIMIT 1
event.archived? # => true
event.not_archived? # => false
event = Event.unarchived.first
event.archived? # => false
event.mark_as_archived
event.archived? # => true
event.archived_at # => 2013-07-05 15:43:42
event.reload
event.archived? # => false
event.archived_at # => nil
event.archive! # (same as #mark_as_archived but save the record immediately)
event.archived? # => true
event.archived_at # => 2013-07-05 15:43:42
event.reload
event.archived? # => true
event.archived_at # => 2013-07-05 15:43:42
Options
Special verbs
Microscope uses a rather simple process to convert field names to infinitive
verbs. It just removes the d
if there’s one at the end of the verb. It also
has its own irregular verbs list.
For example, a liked_at
field name will give like!
and unlike!
instance
methods to records.
But you can configure Microscope to use your own special verbs. For example:
# config/initializers/microscope.rb
Microscope.configure do |config|
config.special_verbs = { 'extracted' => 'extract', 'started' => 'start' }
end
On acts_as_microscope
You can also use a few options when calling acts_as_microscope
:
class Event < ActiveRecord::Base
acts_as_microscope, only: [:created_at]
end
class User < ActiveRecord::Base
acts_as_microscope, except: [:created_at]
end
Event.created_before(2.months.ago) # works!
Event.updated_before(2.months.ago) # NoMethodError
User.created_before(2.months.ago) # NoMethodError
User.updated_before(2.months.ago) # works!
License
Microscope
is © 2013-2014 Mirego and may be freely distributed under the New BSD license. See the LICENSE.md
file.
The microscope logo is based on this lovely icon by Scott Lewis, from The Noun Project. Used under a Creative Commons BY 3.0 license.
About Mirego
Mirego is a team of passionate people who believe that work is a place where you can innovate and have fun. We're a team of talented people who imagine and build beautiful Web and mobile applications. We come together to share ideas and change the world.
We also love open-source software and we try to give back to the community as much as we can.