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I'm trying to create an iOS application where users post and image, and then someone can comment on the image. So far I've set up the a message class which contains (among other things) the image file. I want to be able to add comments to the image, so what would be the best way of doings this.

Option A:

I could add an array (or object?) column to the already existing message class, and then store in this array the comment (string) and the id of the poster (string). For this I think I would need a two-dimensional array, but I'm not sure how I would go about doing this.

Option B:

I could make an entire new class of comments which contains the user's comments (string), as well as the image file that he/she linked to (perhaps though a PFRelation)

Basically I'm leaning to Option A, because it seems easier/more efficient to implement, but I don't really know how I would go about creating a two-dimensional/array of objects - so my question is, how would I go about doing this?

rici
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user3846014
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1 Answers1

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The way I did it in my app is option B. I then added a count column to the photo that was incremented/decremented onSave or onDelete. I think this method is better because it keeps the data more symmetric (with option A some data could have thousands of comments while others would have 0). Additionally, it allows you to query the comments cell if you wanted to have a notification view where you showed the user what activity has been done on their photo.

Dehli
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