add docs for CRUD

docs/lib/snippets/dart_api/manager.dart

@@ -1,9 +1,64 @@
+import 'package:drift/drift.dart';
+
 import '../setup/database.dart';
 
 extension ManagerExamples on AppDatabase {
-  // #docregion create
+  // #docregion manager_create
   Future<void> createTodoItem() async {
-    await managers.todoItems.create((o) => o(title: '', content: ''));
+    // Create a new item
+    await managers.todoItems
+        .create((o) => o(title: 'Title', content: 'Content'));
+
+    // We can also use `mode` and `onConflict` parameters, just
+    // like in the `[InsertStatement.insert]` method on the table
+    await managers.todoItems.create(
+        (o) => o(title: 'Title', content: 'New Content'),
+        mode: InsertMode.replace);
+
+    // We can also create multiple items at once
+    await managers.todoItems.bulkCreate(
+      (o) => [
+        o(title: 'Title 1', content: 'Content 1'),
+        o(title: 'Title 2', content: 'Content 2'),
+      ],
+    );
   }
-  // #enddocregion create
+  // #enddocregion manager_create
+
+  // #docregion manager_update
+  Future<void> updateTodoItems() async {
+    // Update all items
+    await managers.todoItems.update((o) => o(content: Value('New Content')));
+
+    // Update multiple items
+    await managers.todoItems
+        .filter((f) => f.id.isIn([1, 2, 3]))
+        .update((o) => o(content: Value('New Content')));
+  }
+  // #docregion manager_update
+
+  // #docregion manager_replace
+  Future<void> replaceTodoItems() async {
+    // Replace a single item
+    var obj = await managers.todoItems.filter((o) => o.id(1)).getSingle();
+    obj = obj.copyWith(content: 'New Content');
+    await managers.todoItems.replace(obj);
+
+    // Replace multiple items
+    var objs =
+        await managers.todoItems.filter((o) => o.id.isIn([1, 2, 3])).get();
+    objs = objs.map((o) => o.copyWith(content: 'New Content')).toList();
+    await managers.todoItems.bulkReplace(objs);
+  }
+  // #docregion manager_replace
+
+  // #docregion manager_delete
+  Future<void> deleteTodoItems() async {
+    // Delete all items
+    await managers.todoItems.delete();
+
+    // Delete a single item
+    await managers.todoItems.filter((f) => f.id(5)).delete();
+  }
+  // #docregion manager_delete
 }

docs/pages/docs/Dart API/manager.md

@@ -23,11 +23,27 @@ instructions.
 
 ### Filtering across tables
 
+### Ordering
+
 ## Updates
+We can use the manager to update rows in bulk or individual rows that meet a certain condition.
+
+{% include "blocks/snippet" snippets = snippets name = 'manager_update' %}
+
+We can also replace an entire row with a new one. Or even replace multiple rows at once.
+
+{% include "blocks/snippet" snippets = snippets name = 'manager_replace' %}
 
 ## Creating rows
+The manager includes a method for quickly inserting rows into a table.
+We can insert a single row or multiple rows at once.
+
+{% include "blocks/snippet" snippets = snippets name = 'manager_create' %}
 
-{% include "blocks/snippet" snippets = snippets name = 'create' %}
 
 ## Deleting rows
+We may also delete rows from a table using the manager.
+Any rows that meet the specified condition will be deleted.
+
+{% include "blocks/snippet" snippets = snippets name = 'manager_delete' %}