8a72f5c427
This commit adds the module `FromUnion`, which provides the class method
`from_union`. This simplifies the process of selecting data from the
result of a UNION, and reduces the likelihood of making mistakes. As a
result, instead of this:
union = Gitlab::SQL::Union.new([foo, bar])
Foo.from("(#{union.to_sql}) #{Foo.table_name}")
We can now write this instead:
Foo.from_union([foo, bar])
This commit also includes some changes to make this new setup work
properly. For example, a bug in Rails 4
(https://github.com/rails/rails/issues/24193) would break the use of
`from("sub-query-here").includes(:relation)` in certain cases. There was
also a CI query which appeared to repeat a lot of conditions from an
outer query on an inner query, which isn't necessary.
Finally, we include a RuboCop cop to ensure developers use this new
module, instead of using Gitlab::SQL::Union directly.
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/51307
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|---|---|---|
| .. | ||
| admin | ||
| autocomplete | ||
| concerns | ||
| access_requests_finder.rb | ||
| awarded_emoji_finder.rb | ||
| branches_finder.rb | ||
| clusters_finder.rb | ||
| contributed_projects_finder.rb | ||
| environments_finder.rb | ||
| events_finder.rb | ||
| fork_projects_finder.rb | ||
| group_descendants_finder.rb | ||
| group_finder.rb | ||
| group_members_finder.rb | ||
| group_projects_finder.rb | ||
| groups_finder.rb | ||
| issuable_finder.rb | ||
| issues_finder.rb | ||
| joined_groups_finder.rb | ||
| labels_finder.rb | ||
| license_template_finder.rb | ||
| members_finder.rb | ||
| merge_request_target_project_finder.rb | ||
| merge_requests_finder.rb | ||
| milestones_finder.rb | ||
| notes_finder.rb | ||
| personal_access_tokens_finder.rb | ||
| personal_projects_finder.rb | ||
| pipeline_schedules_finder.rb | ||
| pipelines_finder.rb | ||
| projects_finder.rb | ||
| README.md | ||
| runner_jobs_finder.rb | ||
| snippets_finder.rb | ||
| tags_finder.rb | ||
| template_finder.rb | ||
| todos_finder.rb | ||
| union_finder.rb | ||
| user_finder.rb | ||
| user_recent_events_finder.rb | ||
| users_finder.rb | ||
Finders
This type of classes responsible for collection items based on different conditions. To prevent lookup methods in models like this:
class Project
def issues_for_user_filtered_by(user, filter)
# A lot of logic not related to project model itself
end
end
issues = project.issues_for_user_filtered_by(user, params)
Better use this:
issues = IssuesFinder.new(project, user, filter).execute
It will help keep models thiner.