Hello,
in the current project i'm working on i have a simple relation model setup
Gallery and Image now i have the counter_cache set up correctly and it worked wonders while i had only a simple crud. Hovewer i am now implementing a manager for images and galleries, say i always select one gallery and select images i want associated with that gallery. After i select the images i do an ajax request with two params, ID of the gallery and array of image ID's which are to be associated with the said gallery. Here to counter_cache fails my expectations. I decided to let active_record handle all the changes so i simply find my gallery via g=Gallery.find(id) and then set g.image_ids=[1,2,3,4,5]
This does not increment the counter_cache correctly.
example: say i have counter set to 2. I assign 5 more images via the manager, counter cache is still 2, then i assign only 3 ids (means remove 4). the counter cache ends up on -2.
So removing the images from gallery still updates the cache fine but when i add them, the counter cache fail to do what it's supposed to
Say do i use the counter_cache incorectly or should i assign the image ids some other way for the cache to pick them up?