close #334; Add small-scope 'whodunnit' method to PaperTrail::Model::InstanceMethods
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@ -2,9 +2,10 @@
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- [#340](https://github.com/airblade/paper_trail/issues/340) - Prevent potential error encountered when using the `InstallGenerator`
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with Rails `4.1.0.rc1`.
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- [#334](https://github.com/airblade/paper_trail/pull/334) - Add small-scope `whodunnit` method to `PaperTrail::Model::InstanceMethods`.
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- [#329](https://github.com/airblade/paper_trail/issues/329) - Add `touch_with_version` method to `PaperTrail::Model::InstanceMethods`,
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to allow for generating a version `touch`ing a model.
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- [#328](https://github.com/airblade/paper_trail/pull/328) / [#326](https://github.com/airblade/paper_trail/issues/326)/
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- [#328](https://github.com/airblade/paper_trail/pull/328) / [#326](https://github.com/airblade/paper_trail/issues/326) /
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[#307](https://github.com/airblade/paper_trail/issues/307) - `Model.paper_trail_enabled_for_model?` and
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`model_instance.without_versioning` is now thread-safe.
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- [#316](https://github.com/airblade/paper_trail/issues/316) - `user_for_paper_trail` should default to `current_user.try(:id)`
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30
README.md
30
README.md
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@ -57,7 +57,7 @@ The Rails 2.3 code is on the [`rails2`](https://github.com/airblade/paper_trail/
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### Sinatra
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In order to configure `PaperTrail` for usage with [Sinatra](http://www.sinatrarb.com),
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your `Sinatra` app must be using `ActiveRecord` 3 or `ActiveRecord` 4. It is also recommended to use the
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your `Sinatra` app must be using `ActiveRecord` 3 or `ActiveRecord` 4. It is also recommended to use the
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[Sinatra ActiveRecord Extension](https://github.com/janko-m/sinatra-activerecord) or something similar for managing
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your applications `ActiveRecord` connection in a manner similar to the way `Rails` does. If using the aforementioned
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`Sinatra ActiveRecord Extension`, steps for setting up your app with `PaperTrail` will look something like this:
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@ -480,15 +480,32 @@ In a console session you can manually set who is responsible like this:
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You can avoid having to do this manually by setting your initializer to pick up the username of the current user from the OS, like this:
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```ruby
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class PaperTrail::Version < ActiveRecord::Base
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if defined?(Rails::Console)
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PaperTrail.whodunnit = "#{`whoami`.strip}: console"
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elsif File.basename($0) == "rake"
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PaperTrail.whodunnit = "#{`whoami`.strip}: rake #{ARGV.join ' '}"
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# config/initializers/paper_trail.rb
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module PaperTrail
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class Version < ActiveRecord::Base
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if defined?(Rails::Console)
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PaperTrail.whodunnit = "#{`whoami`.strip}: console"
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elsif File.basename($0) == "rake"
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PaperTrail.whodunnit = "#{`whoami`.strip}: rake #{ARGV.join ' '}"
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end
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end
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end
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```
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Sometimes you want to define who is responsible for a change in a small scope without overwriting value of `PaperTrail.whodunnit`. It is possible to define the `whodunnit` value for an operation inside a block like this:
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```ruby
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>> PaperTrail.whodunnit = 'Andy Stewart'
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>> widget.whodunnit('Lucas Souza') do
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>> widget.update_attributes :name => 'Wibble'
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>> end
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>> widget.versions.last.whodunnit # Lucas Souza
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>> widget.update_attributes :name => 'Clair'
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>> widget.versions.last.whodunnit # Andy Stewart
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>> widget.whodunnit('Ben Atkins') { |w| w.update_attributes :name => 'Beth' } # this syntax also works
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>> widget.versions.last.whodunnit # Ben Atkins
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```
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A version's `whodunnit` records who changed the object causing the `version` to be stored. Because a version stores the object as it looked before the change (see the table above), `whodunnit` returns who stopped the object looking like this -- not who made it look like this. Hence `whodunnit` is aliased as `terminator`.
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To find out who made a version's object look that way, use `version.originator`. And to find out who made a "live" object look like it does, use `originator` on the object.
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@ -1062,6 +1079,7 @@ Many thanks to:
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* [Vlad Bokov](https://github.com/razum2um)
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* [Sean Marcia](https://github.com/SeanMarcia)
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* [Chulki Lee](https://github.com/chulkilee)
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* [Lucas Souza](https://github.com/lucasas)
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## Inspirations
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@ -14,11 +14,11 @@ module PaperTrail
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# `:create`, `:update`, `:destroy` as desired.
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# :class_name the name of a custom Version class. This class should inherit from `PaperTrail::Version`.
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# :ignore an array of attributes for which a new `Version` will not be created if only they change.
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# it can also aceept a Hash as an argument where the key is the attribute to ignore (a `String` or `Symbol`),
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# it can also aceept a Hash as an argument where the key is the attribute to ignore (a `String` or `Symbol`),
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# which will only be ignored if the value is a `Proc` which returns truthily.
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# :if, :unless Procs that allow to specify conditions when to save versions for an object
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# :only inverse of `ignore` - a new `Version` will be created only for these attributes if supplied
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# it can also aceept a Hash as an argument where the key is the attribute to track (a `String` or `Symbol`),
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# it can also aceept a Hash as an argument where the key is the attribute to track (a `String` or `Symbol`),
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# which will only be counted if the value is a `Proc` which returns truthily.
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# :skip fields to ignore completely. As with `ignore`, updates to these fields will not create
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# a new `Version`. In addition, these fields will not be included in the serialized versions
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@ -216,6 +216,18 @@ module PaperTrail
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self.class.paper_trail_on! if paper_trail_was_enabled
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end
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# Temporarily overwrites the value of whodunnit and then executes the provided block.
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def whodunnit(value)
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raise ArgumentError, 'expected to receive a block' unless block_given?
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current_whodunnit = PaperTrail.whodunnit
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PaperTrail.whodunnit = value
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begin
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yield self
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ensure
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PaperTrail.whodunnit = current_whodunnit
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end
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end
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# Mimicks behavior of `touch` method from `ActiveRecord::Persistence`, but generates a version
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#
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# TODO: lookinto leveraging the `after_touch` callback from `ActiveRecord` to allow the
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@ -23,6 +23,39 @@ describe Widget do
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describe "Methods" do
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describe "Instance", :versioning => true do
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describe :whodunnit do
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it { should respond_to(:whodunnit) }
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context "no block given" do
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it "should raise an error" do
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expect { widget.whodunnit('Ben') }.to raise_error(ArgumentError, 'expected to receive a block')
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end
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end
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context "block given" do
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let(:orig_name) { Faker::Name.name }
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let(:new_name) { Faker::Name.name }
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before do
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PaperTrail.whodunnit = orig_name
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widget.versions.last.whodunnit.should == orig_name # persist `widget`
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end
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it "should modify value of `PaperTrail.whodunnit` while executing the block" do
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widget.whodunnit(new_name) do
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PaperTrail.whodunnit.should == new_name
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widget.update_attributes(:name => 'Elizabeth')
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end
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widget.versions.last.whodunnit.should == new_name
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end
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it "should revert the value of `PaperTrail.whodunnit` to it's previous value after executing the block" do
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widget.whodunnit(new_name) { |w| w.update_attributes(:name => 'Elizabeth') }
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PaperTrail.whodunnit.should == orig_name
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end
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end
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end
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describe :touch_with_version do
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it { should respond_to(:touch_with_version) }
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@ -771,7 +771,7 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
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should 'store dynamic meta data based on a method of the item' do
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assert_equal @article.action_data_provider_method, @article.versions.last.action
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end
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should 'store dynamic meta data based on an attribute of the item prior to creation' do
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assert_equal nil, @article.versions.last.title
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end
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@ -793,7 +793,7 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
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should 'store dynamic meta data which depends on the item' do
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assert_equal @article.id, @article.versions.last.article_id
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end
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should 'store dynamic meta data based on an attribute of the item prior to the update' do
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assert_equal @initial_title, @article.versions.last.title
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end
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@ -814,7 +814,7 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
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should 'store dynamic meta data which depends on the item' do
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assert_equal @article.id, @article.versions.last.article_id
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end
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should 'store dynamic meta data based on an attribute of the item prior to the destruction' do
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assert_equal @initial_title, @article.versions.last.title
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end
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@ -837,7 +837,6 @@ class HasPaperTrailModelTest < ActiveSupport::TestCase
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should 'return its previous self' do
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assert_equal @widget.versions[-2].reify, @widget.previous_version
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end
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end
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