docbrown/app/services/articles/page_view_updater.rb
Jeremy Friesen 5ec47d99dc
Ensuring we don't track views of author or unpublished (#16143)
* Ensuring we don't track views of author or unpublished

Prior to this commit, I was surprised to learn that we:

1) Tracked an author's view of their article.
2) Tracked views of an unpublished article.

This came up from a Forem creator asking if they could reset the view
counter.  Or trigger the reset on publication.

I think a general business logic policy of don't track views for the
author and don't track views for unpublished articles is a reasonable
default.

Were we to pursue the clear views on publication, we'd need to consider
something that went from unpublished -> published -> unpublished ->
published.  Without a more explicit state machine, triggering a
busineiss logic behavior seems a bit unexpected.

In other words, I wrote an article.  There are 20 views when I realize
that I need to unpublished it.  I make the changes in the unpublished
state, and re-publish.  I'd assume that those 20 views would still be
"recorded" and counted towards my article's view counts.

* Adjusting condition structure

Prior to this commit, the `if` clause was rather far to the right.  This
helps make the if clause more pronounced.
2022-01-18 11:23:18 -05:00

33 lines
1.3 KiB
Ruby

module Articles
# This module is responsible for updating a specific page view for a given article and user.
#
# @see Articles::UpdatePageViewsWorker for the sibling that's responsible for recording page
# views.
module PageViewUpdater
# @param article_id [Integer]
# @param user_id [Integer]
#
# @return [TrueClass] if we updated or created a PageView
# @return [FalseClass] if we did not update a PageView
#
# @note Regardless of return status, consider the business logic successful unless we raise an
# exception. The return value is present for easing testing. The `find_or_create_by`
# adds a complication in the testing logic
# (e.g., `expect { Articles::PageViewUpdater.call }.not_to change(PageView, :count) `
def self.call(article_id:, user_id:)
# Don't record views to unpublished articles.
return false if Article.unpublished.exists?(id: article_id)
# Don't record author's own views.
return false if Article.published.exists?(id: article_id, user_id: user_id)
page_view = PageView.order(created_at: :desc)
.find_or_create_by(article_id: article_id, user_id: user_id)
return true if page_view.new_record?
page_view.update_column(:time_tracked_in_seconds, page_view.time_tracked_in_seconds + 15)
true
end
end
end