From b067f1ff57372be7f520d536510adc808764243a Mon Sep 17 00:00:00 2001
From: Simon Willison <swillison@gmail.com>
Date: Fri, 1 Jan 2021 18:10:04 -0800
Subject: [PATCH] table.triggers_dict property, closes #211

---
 docs/python-api.rst      | 9 +++++++++
 sqlite_utils/db.py       | 5 +++++
 tests/test_introspect.py | 9 ++++++++-
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/docs/python-api.rst b/docs/python-api.rst
index ac7a830..62fa535 100644
--- a/docs/python-api.rst
+++ b/docs/python-api.rst
@@ -1458,6 +1458,15 @@ The ``.triggers`` property lists database triggers. It can be used on both datab
     >>> db.triggers
     ... similar output to db["authors"].triggers
 
+The ``table.triggers_dict`` property returns the triggers for that table as a dictionary mapping their names to their SQL definitions.
+
+::
+
+    >>> db["authors"].triggers_dict
+    {'authors_ai': 'CREATE TRIGGER [authors_ai] AFTER INSERT...',
+     'authors_ad': 'CREATE TRIGGER [authors_ad] AFTER DELETE...',
+     'authors_au': 'CREATE TRIGGER [authors_au] AFTER UPDATE'}
+
 The ``detect_fts()`` method returns the associated SQLite FTS table name, if one exists for this table. If the table has not been configured for full-text search it returns ``None``.
 
 ::
diff --git a/sqlite_utils/db.py b/sqlite_utils/db.py
index 90427bf..18ac664 100644
--- a/sqlite_utils/db.py
+++ b/sqlite_utils/db.py
@@ -759,6 +759,11 @@ class Table(Queryable):
             ).fetchall()
         ]
 
+    @property
+    def triggers_dict(self):
+        "Returns {trigger_name: sql} dictionary"
+        return {trigger.name: trigger.sql for trigger in self.triggers}
+
     def create(
         self,
         columns,
diff --git a/tests/test_introspect.py b/tests/test_introspect.py
index 80cfee6..ce68155 100644
--- a/tests/test_introspect.py
+++ b/tests/test_introspect.py
@@ -117,7 +117,7 @@ def test_pks(fresh_db, pk, expected):
     assert expected == fresh_db["foo"].pks
 
 
-def test_triggers(fresh_db):
+def test_triggers_and_triggers_dict(fresh_db):
     assert [] == fresh_db.triggers
     authors = fresh_db["authors"]
     authors.insert_all(
@@ -128,6 +128,7 @@ def test_triggers(fresh_db):
     )
     fresh_db["other"].insert({"foo": "bar"})
     assert [] == authors.triggers
+    assert {} == authors.triggers_dict
     assert [] == fresh_db["other"].triggers
     authors.enable_fts(
         ["name", "famous_works"], fts_version="FTS4", create_triggers=True
@@ -141,7 +142,13 @@ def test_triggers(fresh_db):
     assert expected_triggers == {
         (t.name, t.table) for t in fresh_db["authors"].triggers
     }
+    assert authors.triggers_dict == {
+        "authors_ai": "CREATE TRIGGER [authors_ai] AFTER INSERT ON [authors] BEGIN\n  INSERT INTO [authors_fts] (rowid, [name], [famous_works]) VALUES (new.rowid, new.[name], new.[famous_works]);\nEND",
+        "authors_ad": "CREATE TRIGGER [authors_ad] AFTER DELETE ON [authors] BEGIN\n  INSERT INTO [authors_fts] ([authors_fts], rowid, [name], [famous_works]) VALUES('delete', old.rowid, old.[name], old.[famous_works]);\nEND",
+        "authors_au": "CREATE TRIGGER [authors_au] AFTER UPDATE ON [authors] BEGIN\n  INSERT INTO [authors_fts] ([authors_fts], rowid, [name], [famous_works]) VALUES('delete', old.rowid, old.[name], old.[famous_works]);\n  INSERT INTO [authors_fts] (rowid, [name], [famous_works]) VALUES (new.rowid, new.[name], new.[famous_works]);\nEND",
+    }
     assert [] == fresh_db["other"].triggers
+    assert {} == fresh_db["other"].triggers_dict
 
 
 @pytest.mark.parametrize(