Include image alt text in post search

[DraconicNEO]

Pull request to include Image Alt-text in Post search results. Allowing Posts to be searched for by their image alt-text.

Fixes #5445

[dullbananas]

Add this migration

down.sql

DROP INDEX idx_post_trigram;

CREATE INDEX IF NOT EXISTS idx_post_trigram ON post USING gin (name gin_trgm_ops, body gin_trgm_ops);

up.sql

DROP INDEX idx_post_trigram;

CREATE INDEX IF NOT EXISTS idx_post_trigram ON post USING gin (name gin_trgm_ops, body gin_trgm_ops, alt_text gin_trgm_ops);

[DraconicNEO]

Add this migration

down.sql

DROP INDEX idx_post_trigram;

CREATE INDEX IF NOT EXISTS idx_post_trigram ON post USING gin (name gin_trgm_ops, body gin_trgm_ops);

up.sql

DROP INDEX idx_post_trigram;

CREATE INDEX IF NOT EXISTS idx_post_trigram ON post USING gin (name gin_trgm_ops, body gin_trgm_ops, alt_text gin_trgm_ops);

Done

[dessalines]

Thx!

[dessalines]

In the future use Fixes #ISSUE_NUM in either the PR or a commit to get github to close it automatically. I edited the PR text to do this.