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Support procs for required_if; add present_if #115

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Support procs for required_if; add present_if #115

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Commits on Mar 20, 2015

  1. Support procs in required_if option 

    These were supported in AttributeResolver, but not in Attribute
itself. The proc will receive one argument, which is the loaded object.

Signed-off-by: Sean McGivern <[email protected]>
    Sean McGivern committed Mar 20, 2015
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  2. Add present_if option 

    When dumping a model, each attribute will be replaced with nil if it has
a present_if condition and that condition is not met. The allowed
conditions are the same as for required_if:

* A string key, which passes if that key's value is not nil.
* A one-item hash, whose key is the path in the object, and whose value
  is any ===-compatible object (string, regex, proc, etc.).
* A proc, which is passed the object.

Like required_if, this cannot be used in conjunction with the required
option. It can be used with the required_if option, but it should only
be so in a way that they are compatible (for instance, if both have the
same condition, then the attribute will only be present when it is
required).

Signed-off-by: Sean McGivern <[email protected]>
    Sean McGivern committed Mar 20, 2015
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