Matt,
Thanks again for sharing these examples. After looking them over (and
reading the specs) I have a few new questions. I hope others may find
this useful as well:
1) When should CastedModel be used instead of ExtendedDocument? In
some of the examples I see you are saving a CastedModel as a field
inside a document. Other times you are saving an ExtendedDocument
inside a document. But it appears to me that the end result is the
same in the database. Can (or should) a CastedModel also be saved as a
top level document, and if not, why not just use ExtendedDocument for
everything to allow that flexibility?
2) Collections... When implementing something like tags for instance,
do you think it's better design to add each new tag to the document as
a separate property field, or as a cast_as collection? (BTW, tags may
be a bad example because they could simply be strings, but assuming I
want them to be typed.)
property :tags, :cast_as => ["Tag"]
vs.
tag_one: {
"name": "wild",
"couchrest-type": "Tag"
}
tag_two: {
"name": "mild",
"couchrest-type": "Tag"
}
3) Sticking with the tag example above, if I am also creating top
level documents for each tag in my database, do you think it's good
practice to stay denormalized by also storing the whole tag in the
tagged document? So...
# normalized
property :tags, :cast_as => ["String"] # An array of Tag ids
vs.
# denormalized (assuming this stores the whole tag)
property :tags, :cast_as => ["Tag"]
Or even...
# normalized
tag_one_id: "0ec292a425aa3225994832a086c95d7a"
tag_two_id: "e76bb7825fca3f678b69d88c2a831edc"
vs.
# denormalized
tag_one: {
"name": "wild",
"_rev": "1-3363921651",
"_id": "0ec292a425aa3225994832a086c95d7a",
"couchrest-type": "Tag"
}
tag_two: {
"name": "mild",
"_rev": "1-1029362251",
"_id": "e76bb7825fca3f678b69d88c2a831edc",
"couchrest-type": "Tag"
}
4) And finally, what are your thoughts on using the _attachment field
for storing something like profile photos... or is it still better to
use a solution like Paperclip + AWS? It all seems very nice from
Futon, but do document based databases really make this the better way
to go. What about CDNs?
Thanks again,
Peter
On May 15, 1:02 am, Matt Aimonetti <[email protected]> wrote:
> After so many people got excited about CouchDB, I put quick example
> together:
>
> http://gist.github.com/112109
>
> I'll try to write a blog post in the next few days.
>
> - Matt
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