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changedFrom()

Returns the previous value of a property that has changed. Returns an empty string if no previous value exists. CFWheels will keep a note of the previous property value until the object is saved to the database.

Name	Type	Required	Default	Description
property	string	Yes		Name of property to get the previous value for.

// Get a member object and change the `email` property on it
member = model("member").findByKey(params.memberId);
member.email = params.newEmail;

// Get the previous value (what the `email` property was before it was changed)
oldValue = member.changedFrom("email");

// The above can also be done using a dynamic function like this
oldValue = member.emailChangedFrom();