If the yande.re or konachan.com post has a source from a supported site,
for example Pixiv or Twitter, then delegate the artist and commentary
lookup to that substrategy.
Only do this for sources from recognized sites, not the null strategy.
Convert to an autosave association on urls. This ensures that when we
save the artist we only validate the added urls, not bad urls that we're
trying to remove, and that url validation errors are propagated up to
the artist object.
This also fixes invalid urls being saved in the artist history despite
validation failing (#3720).
Allow searching the URL field by regex or by wildcard.
If the query looks like `/twitter/` do a regex search, otherwise if it
looks like `http://www.twitter.com/*` do a wildcard search, otherwise if
it looks like an url do an artist finder search, lastly if it looks like
`twitter` do a `*twitter*` search.
Add these search params:
* /artists?search[<field>]=
* /artists?search[<field>_eq]=
* /artists?search[<field>_not_eq]=
* /artists?search[<field>_like]=
* /artists?search[<field>_not_like]=
* /artists?search[<field>_ilike]=
* /artists?search[<field>_not_ilike]=
* /artists?search[<field>_regex]=
* /artists?search[<field>_not_regex]=
where `<field>` can be `name`, `group_name`, or `other_names`.
Remove these search params:
* /artists?search[name_matches]=
* /artists?search[other_names_match]=
* /artists?search[group_name_matches]=
`/artists?search[<field>_like]=` effectively does the same thing that
these searches did.
Drop support for the following pseudo-metatags in the Name field in the
artists search form:
* name:<name>
* other:<other name>
* group:<group name>
* status:banned
* status:active
* http://www.example.com
Instead, make the Name field do a wildcard search against the artist
name, group name, or other names. If the query looks like `/regex/`,
then do a regex search against any of these names.
/artists?search[name] now does a literal exact match and
/artists?search{any_name_matches] does the above wildcard/regex search.
* Move the limit:<n> / order:random metatag parsing from the controller
to the post set.
* Introduce `Tag.has_metatag?` and use it to parse these metatags
instead of using a regex (#2894).
Fixes the banned IP check not being applied when sending the HEAD
request for is_cloudflare?.
Also fixes the `#size` method not using the uncached url (which meant
the bookmarklet could report the wrong filesize on artstation uploads).
Rename Artist#find_all_by_url to url_matches and drop previous
url_matches method, along with find_artists and search_for_profile.
Previously find_artists tried to lookup the url, referer url, and profile
url in turn until an artist match was found. This was wasteful, because
the source strategy already knows which url to lookup (usually the profile
url). If that url doesn't find a match, then the artist doesn't exist.
