When an investment had been assigned a user tag and a valuation tag with
the same name, it appeared twice when filtering by tag.
This is because by design, in order to provide compatibility with scopes
using "select" or "distinct", the method `tagged_with` doesn't select
unique records.
Forcing the query to return unique records solves the issue.
Since budgets now have milestone tags, the name of this method was
confusing and will conflict with the name generated by acts_as_taggable.
Note the new name could be improved too.
We were very inconsistent regarding these rules.
Personally I prefer no empty lines around blocks, clases, etc... as
recommended by the Ruby style guide [1], and they're the default values
in rubocop, so those are the settings I'm applying.
The exception is the `private` access modifier, since we were leaving
empty lines around it most of the time. That's the default rubocop rule
as well. Personally I don't have a strong preference about this one.
[1] https://rubystyle.guide/#empty-lines-around-bodies
The page should not show any headings which don't have any
winning investments. The "no content" message should only be
shown when there are no headings with investments to avoid an
otherwise blank page.
__Note:__ in the main @headings query, _both_ #includes and #joins
are needed to:
1. eager load all necessary data (#includes)
and
2. to perform an INNER JOIN on milestones to filter out investments
with no milestones (#joins).
This commit makes 3 changes:
1. Extracts a query into a helper for clarity and DRYness
2. Adds a `.where` clause to filter investments based on their
(current) milestone status
3. Fixes a bug where investments would be rendered as many times as
milestones associated to an investment
