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Update Attribute Was with a link to the ActiveModel module.

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jbranchaud
2015-02-27 07:24:21 -06:00
parent 973eb974e5
commit 9925a7db09
1 changed files with 6 additions and 4 deletions
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10
rails/attribute-was.md
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@@ -2,10 +2,12 @@
When modifying the attributes of an `ActiveRecord` object, you may want to
know what values the modified attributes used to have. `ActiveRecord` gets
some handy methods from the `ActiveModel::Dirty` module that allow you to
check these values out even if the object's attributes were changed before
you received it (though you are out of luck once it has been saved).
Just add `_was` onto the end of the attribute in question.
some handy methods from the
[`ActiveModel::Dirty`](http://api.rubyonrails.org/classes/ActiveModel/Dirty.html)
module that allow you to check these values out even if the object's
attributes were changed before you received it (though you are out of luck
once it has been saved). Just add `_was` onto the end of the attribute in
question.
```ruby
>> pokemon.name