Fix bug where it was possible to submit blank text in various text fields.
Caused by `String#blank?` not considering certain Unicode characters as blank. `blank?` is defined
as `match?(/\A[[:space:]]*\z/)`, where `[[:space:]]` matches ASCII spaces (space, tab, newline, etc)
and Unicode characters in the Space category ([1]). However, there are other space-like characters
not in the Space category. This includes U+200B (Zero-Width Space), and many more.
It turns out the "Default ignorable code points" [2][3] are what we're after. These are the set of 400
or so formatting and control characters that are invisible when displayed.
Note that there are other control characters that aren't invisible when rendered, instead they're
shown with a placeholder glyph. These include the ASCII C0 and C1 control codes [4], certain Unicode
control characters [5], and unassigned, reserved, and private use codepoints.
There is one outlier: the Braille pattern blank (U+2800) [6]. This character is visually blank, but is
not considered to be a space or an ignorable code point.
[1]: https://codepoints.net/search?gc[]=Z
[2]: https://codepoints.net/search?DI=1
[3]: https://www.unicode.org/review/pr-5.html
[4]: https://codepoints.net/search?gc[]=Cc
[5]: https://codepoints.net/search?gc[]=Cf
[6]: https://codepoints.net/U+2800
[7]: https://en.wikipedia.org/wiki/Whitespace_character
[8]: https://character.construction/blanks
[9]: https://invisible-characters.com
Add a polymorphic `subject` field that records the subject of the mod
action. The subject is the post, user, comment, artist, etc the mod
action is for.
* The subject for the user ban and unban actions is the user, not the ban itself.
* The subject for the user feedback update and deletion actions is the user,
not the feedback itself.
* The subject for the post undeletion action is the post, not the approval itself.
* The subject for the move favorites action is the source post where the
favorites were moved from, not the destination post where the favorites
were moved to.
* The subject for the post permanent delete action is nil, because the
post itself is hard deleted.
* When a post is permanently deleted, all mod actions related to the
post are deleted as well.
Remove the `CurrentUser.ip_addr` global variable and replace it with
`request.remote_ip`. Before we had to track the current user's IP in a
global variable so that when we edited a post for example, we could pass
down the user's IP to the model and save it in the post_versions table.
Now that we now longer save IPs in version tables, we don't need a global
variable to get access to the current user's IP outside of controllers.
Remove the rule that Members could only post 2 bumping comments per
hour.
This was frequently misunderstood as meaning that Members could only
post 2 comments per hour. In fact, Members could post an unlimited
number of comments per hour, but the rest of their comments had to be
non-bumping. The error message we showed to users was misleading. Even
our own code misunderstood what this did when describing the config
option.
Gold users also weren't subject to this limit, which was unfair since
Gold users aren't any better at commenting than regular users. The fact
that a large number of users already ignored bump limits and nobody
really noticed indicates that the limit was unnecessary.
Allow users to upvote a comment, then downvote it, without raising an
error or having to manually remove the upvote first. The upvote is
automatically removed and replaced by the downvote.
Changes to the /comment_votes API:
* `POST /comment_votes` and `DELETE /comment_votes` now return a comment
vote instead of a comment.
* The `score` param in `POST /comment_votes` is now 1 or -1, not
`up` or `down.`
The belongs_to_creator macro was used to initialize the creator_id field
to the CurrentUser. This made tests complicated because it meant you had
to create and set the current user every time you wanted to create an
object, when lead to the current user being set over and over again. It
also meant you had to constantly be aware of what the CurrentUser was in
many different contexts, which was often confusing. Setting creators
explicitly simplifies everything greatly.
Certain parts of comment rendering triggered sql queries that we didn't
really need to do. Rework things to avoid this.
* Preload comment creators in order to display commenter names with link_to_user.
* Preload comment votes in order to display "undo vote" links. Only preload
votes for members since anonymous users can't vote and don't have "undo
vote" links.
* Rework various conditionals to do the filtering in Ruby so that we
avoid issuing any extra queries in sql.
* Avoid issuing any queries at all when the post doesn't have any
comments (when last_commented_at is blank).
Changes:
* Drop Users.id_to_name.
* Don't cache Users.name_to_id.
* Replace calls to name_to_id with find_by_name when possible.
* Don't autodefine creator_name in belongs_to_creator.
* Don't autodefine updater_name in belongs_to_updater.
* Instead manually define creator_name / updater_name only on models that need
to return these fields in the api.
id_to_name was cached to reduce the impact of N+1 query patterns in
certain places, especially in api responses that return creator_name /
updater_name fields. But it still meant we were doing N calls to
memcache. Using `includes` to prefetch users avoids this N+1 pattern.
name_to_id had no need be cached, it was never used in any performance-
sensitive contexts.
Avoiding caching also avoids the need to keep these caches consistent.
* Allow using ApplicationRecord#attribute_matches to search text attributes,
and standardize models on using this instead of duplicating code.
* Remove restrictions that limited wildcard searches to Builders only in various places.
Fail loudly if we forget to whitelist a param instead of silently
ignoring it.
misc models: convert to strong params.
artist commentaries: convert to strong params.
* Disallow changing or setting post_id to a nonexistent post.
artists: convert to strong params.
* Disallow setting `is_banned` in create/update actions. Changing it
this way instead of with the ban/unban actions would leave the artist in
a partially banned state.
bans: convert to strong params.
* Disallow changing the user_id after the ban has been created.
comments: convert to strong params.
favorite groups: convert to strong params.
news updates: convert to strong params.
post appeals: convert to strong params.
post flags: convert to strong params.
* Disallow users from setting the `is_deleted` / `is_resolved` flags.
ip bans: convert to strong params.
user feedbacks: convert to strong params.
* Disallow users from setting `disable_dmail_notification` when creating feedbacks.
* Disallow changing the user_id after the feedback has been created.
notes: convert to strong params.
wiki pages: convert to strong params.
* Also fix non-Builders being able to delete wiki pages.
saved searches: convert to strong params.
pools: convert to strong params.
* Disallow setting `post_count` or `is_deleted` in create/update actions.
janitor trials: convert to strong params.
post disapprovals: convert to strong params.
* Factor out quick-mod bar to shared partial.
* Fix quick-mod bar to use `Post#is_approvable?` to determine visibility
of Approve button.
dmail filters: convert to strong params.
password resets: convert to strong params.
user name change requests: convert to strong params.
posts: convert to strong params.
users: convert to strong params.
* Disallow setting password_hash, last_logged_in_at, last_forum_read_at,
has_mail, and dmail_filter_attributes[user_id].
* Remove initialize_default_image_size (dead code).
uploads: convert to strong params.
* Remove `initialize_status` because status already defaults to pending
in the database.
tag aliases/implications: convert to strong params.
tags: convert to strong params.
forum posts: convert to strong params.
* Disallow changing the topic_id after creating the post.
* Disallow setting is_deleted (destroy/undelete actions should be used instead).
* Remove is_sticky / is_locked (nonexistent attributes).
forum topics: convert to strong params.
* merges https://github.com/evazion/danbooru/tree/wip-rails-5.1
* lock pg gem to 0.21 (1.0.0 is incompatible with rails 5.1.4)
* switch to factorybot and change all references
Co-authored-by: r888888888 <r888888888@gmail.com>
Co-authored-by: evazion <noizave@gmail.com>
add diffs
The template looks like this:
Subject:
#{creator_name} mentioned you in a comment on post ##{post_id}
Body:
@#{creator_name} mentioned you in a \"comment\":/posts/#{post_id}#comment-#{id} on post ##{post_id}:
[quote]
#{DText.excerpt(body, "@"+user_name)}
[/quote]
2) Error:
CommentTest#test_: A comment created by an unlimited user should not allow duplicate votes. :
ActiveRecord::RecordInvalid: Validation failed: You have already voted for this comment
app/models/comment.rb:142:in `vote!'
test/unit/comment_test.rb:164:in `block (3 levels) in <class:CommentTest>'
3) Error:
CommentTest#test_: A comment created by an unlimited user should not allow upvotes by the creator. :
ActiveRecord::RecordInvalid: Validation failed: You cannot upvote your own comments
app/models/comment.rb:142:in `vote!'
test/unit/comment_test.rb:179:in `block (3 levels) in <class:CommentTest>'
