Thanks Ryan.
I've just tried that, but I still get an error message.
By the way, is it definitely .id and not _id? I've seen both, and Django docs
says: 'Behind the scenes, Django appends "_id" to the field name to create its
database column name, which makes me wonder if it might be _id.
Incidentally, I've also tried amending the relevant URL path to
path('add_comment/<int:p.image_id>', views.add_comment, name='add_comment') -
with underscore and with a dot before the id - but that doesn't work.
Jeff
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