SoftAttributes
Calculated fields are usually not stored in the database. But, in many cases, you would want to treat them just like attributes - serializing them into the xml/json representation, discarding them if they appear on the incoming xml/json payloads, lazily initializing them (in case you are loading them from an expensive ActiveResource call), etc. You will also want to access them by either methods or [] notation.
GOALS
The major distinguishing features of SoftAttributes are:
-
To not pollute the attributes hash by putting non-persisted variables in them.
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But at the same time, to maintain a list of attributes that can get accessed.
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These attributes could be lazily loaded (and cached in the instance, once they are retrieved - to avoid multiple ActiveResource calls)
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To provide an easy way to inject them into the xml/json payload as needed.
EXAMPLE
class Foo
#will define a setter method that ignores the param
noop_setter :bar
end
API DOCUMENTATION
CONTRIBUTORS
LICENSE
(The MIT License)
Copyright © 2010 Vijay Aravamudhan
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ‘Software’), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.