Re: [chiPHPug-discuss] OOP structuring question

[Richard L. <ce...@l-...>]

PS
Person, Photo, Details are the obvious Objects to use.

Obvious does not always equal Right. :-)

Keep an open mind about using People and Albums as objects, and the
details within are just an array, particularly if you expect to be
dealing with a LOT of people in any single page.

Or even something even more non-obvious.  I've often found in OOP that
after I write the whole thing in the obvious way, and then really sit
down and Zen on it for a long time, that if I had just looked at it
all "sideways" from the get-go, a much better/cleaner OOP hierarchy
would have come out...

But there's no easy way to do that until you've figured out your
entire Feature Set and spent a LOT of time thinking about what you
really want to do.

On Wed, June 10, 2009 12:33 pm, Arlo Leach wrote:
> Hi folks,
>
> I'm doing my first project with a fully object-oriented approach and I
> have
> a question about how you all would break the code apart.
>
> Let's say I have a social networking site where members can upload
> photos,
> and I want to display a particular member's photos.
>
> One approach is to have a Member object, with a method getPhotos, that
> returns the IDs of the photos that belong to that member; and to have
> a
> Photo object, with a method getDetails, that returns the details for a
> given
> photo. In order to display a member's photos, I would first call
> getPhotos
> for the member, then call getDetails for each of the returned photos.
> This
> makes sense from an encapsulation perspective, but it seems wasteful
> because
> I'd have one initial database query plus an additional query for each
> photo.
>
> I could build getDetails so that it can take a list of IDs and return
> the
> details for all the photos at once, and then I'd just have two
> queries. Or I
> could build a getPhotosByMember method that accepts a member ID as an
> argument and returns the details for all the photos belonging to that
> member. Then I'd be down to one query, but I would probably end up
> building
> several similar methods (e.g., getRecentPhotos) that would have
> redundant
> code.
>
> What would you say is the normal or accepted way to structure this?
>
> Thanks,
> -Arlo
>
> _______________________________
>
> Arlo Leach
> 773.769.6106
> http://arlomedia.com
>
>
>
>
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