Trigger search vector update when author is edited

This commit is contained in:
Mouse Reeve 2021-06-26 12:33:15 -07:00
parent 2fa5fabb7b
commit 68fc5f2b5a
3 changed files with 121 additions and 1 deletions

View file

@ -70,4 +70,57 @@ class Migration(migrations.Migration):
DROP FUNCTION IF EXISTS book_trigger;
""",
),
# when an author is edited
migrations.RunSQL(
sql="""
CREATE FUNCTION author_trigger() RETURNS trigger AS $$
begin
WITH book AS (
SELECT bookwyrm_book.id as row_id
FROM bookwyrm_author
LEFT OUTER JOIN bookwyrm_book_authors
ON bookwyrm_book_authors.id = new.id
LEFT OUTER JOIN bookwyrm_book
ON bookwyrm_book.id = bookwyrm_book_authors.book_id
)
UPDATE bookwyrm_book SET search_vector = ''
FROM book
WHERE id = book.row_id;
return new;
end
$$ LANGUAGE plpgsql;
CREATE TRIGGER author_search_vector_trigger
AFTER UPDATE OF name
ON bookwyrm_author
FOR EACH ROW EXECUTE FUNCTION author_trigger();
""",
reverse_sql="""
DROP TRIGGER IF EXISTS author_search_vector_trigger
ON bookwyrm_author;
DROP FUNCTION IF EXISTS author_trigger;
""",
),
# when an author is added to or removed from a book
migrations.RunSQL(
sql="""
CREATE FUNCTION book_authors_trigger() RETURNS trigger AS $$
begin
UPDATE bookwyrm_book SET search_vector = ''
WHERE id = coalesce(new.book_id, old.book_id);
return new;
end
$$ LANGUAGE plpgsql;
CREATE TRIGGER book_authors_search_vector_trigger
AFTER INSERT OR DELETE
ON bookwyrm_book_authors
FOR EACH ROW EXECUTE FUNCTION book_authors_trigger();
""",
reverse_sql="""
DROP TRIGGER IF EXISTS book_authors_search_vector_trigger
ON bookwyrm_book_authors;
DROP FUNCTION IF EXISTS book_authors_trigger;
""",
),
]

View file

@ -1,8 +1,9 @@
""" testing models """
from unittest.mock import patch
from dateutil.parser import parse
from django.test import TestCase
from django.utils import timezone
from unittest.mock import patch
from bookwyrm import models, settings
from bookwyrm.models.book import isbn_10_to_13, isbn_13_to_10

View file

@ -0,0 +1,66 @@
""" django configuration of postgres """
from django.test import TestCase
from bookwyrm import models
class PostgresTriggers(TestCase):
"""special migrations, fancy stuff ya know"""
def test_search_vector_on_create(self):
"""make sure that search_vector is being set correctly on create"""
book = models.Edition.objects.create(title="The Long Goodbye")
book.refresh_from_db()
self.assertEqual(book.search_vector, "'goodby':3A 'long':2A")
def test_search_vector_on_update(self):
"""make sure that search_vector is being set correctly on edit"""
book = models.Edition.objects.create(title="The Long Goodbye")
book.title = "The Even Longer Goodbye"
book.save(broadcast=False)
book.refresh_from_db()
self.assertEqual(book.search_vector, "'even':2A 'goodby':4A 'longer':3A")
def test_search_vector_fields(self):
"""use multiple fields to create search vector"""
author = models.Author.objects.create(name="The Rays")
book = models.Edition.objects.create(
title="The Long Goodbye",
subtitle="wow cool",
series="series name",
languages=["irrelevent"],
)
book.authors.add(author)
book.refresh_from_db()
self.assertEqual(
book.search_vector,
"'cool':5B 'goodby':3A 'long':2A 'name':9 'rays':7B 'seri':8 'the':6B 'wow':4B",
)
def test_seach_vector_on_author_update(self):
"""update search when an author name changes"""
author = models.Author.objects.create(name="The Rays")
book = models.Edition.objects.create(
title="The Long Goodbye",
)
book.authors.add(author)
author.name = "Jeremy"
author.save(broadcast=False)
book.refresh_from_db()
self.assertEqual(book.search_vector, "'goodby':3A 'jeremy':4B 'long':2A")
def test_seach_vector_on_author_delete(self):
"""update search when an author name changes"""
author = models.Author.objects.create(name="Jeremy")
book = models.Edition.objects.create(
title="The Long Goodbye",
)
book.authors.add(author)
book.refresh_from_db()
self.assertEqual(book.search_vector, "'goodby':3A 'jeremy':4B 'long':2A")
book.authors.remove(author)
book.refresh_from_db()
self.assertEqual(book.search_vector, "'goodby':3A 'long':2A")