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More on references
When working with references it's often useful to know if there are any broken ones in the space. This happens when a published entry references another that has been deleted after the parent was published. This might create issues if your application code doesn't degrade content gracefully. To get a report of all broken references you can use the following function:
(cc *ContentfulClient) BrokenReferences() (brokenReferences []BrokenReference)
Note that this only works with cached clients. See the next chapter on caching.
Also on references: when you want to reference entry B from entry A, you cannot assign
the value object of entry B to the reference field in A. First you need to convert the
object to a ContentTypeSys object because that's what Contentful expects in reference fields:
(vo *CfPerson) ToReference() (refSys ContentTypeSys)
Finally, you can get the parents (AKA referring) entries of either an entry or
an EntryReference with the GetParents() method. This returns a slice of []EntryReference:
(vo *CfPerson) GetParents() (parents []EntryReference, err error)
(ref *EntryReference) GetParents(cc *ContentfulClient) (parents []EntryReference, err error)