1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
using Microsoft.EntityFrameworkCore.Migrations;
namespace Timeline.Migrations
{
public partial class MakePostAuthorOptional : Migration
{
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.Sql(@"
PRAGMA foreign_keys = 0;
BEGIN TRANSACTION;
CREATE TABLE new_timeline_posts (
id INTEGER NOT NULL
CONSTRAINT PK_timeline_posts PRIMARY KEY AUTOINCREMENT,
timeline INTEGER NOT NULL,
author INTEGER,
content TEXT,
time TEXT NOT NULL,
last_updated TEXT NOT NULL,
local_id INTEGER NOT NULL
DEFAULT 0,
content_type TEXT NOT NULL
DEFAULT '',
extra_content TEXT,
CONSTRAINT FK_timeline_posts_users_author FOREIGN KEY (
author
)
REFERENCES users (id),
CONSTRAINT FK_timeline_posts_timelines_timeline FOREIGN KEY (
timeline
)
REFERENCES timelines (id) ON DELETE CASCADE
);
INSERT INTO new_timeline_posts SELECT * FROM timeline_posts;
DROP TABLE timeline_posts;
ALTER TABLE new_timeline_posts RENAME TO timeline_posts;
CREATE INDEX IX_timeline_posts_author ON timeline_posts (author);
CREATE INDEX IX_timeline_posts_timeline ON timeline_posts(timeline);
PRAGMA foreign_key_check;
COMMIT TRANSACTION;
PRAGMA foreign_keys = 1;
", true);
}
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropForeignKey(
name: "FK_timeline_posts_users_author",
table: "timeline_posts");
migrationBuilder.AlterColumn<long>(
name: "author",
table: "timeline_posts",
type: "INTEGER",
nullable: false,
oldClrType: typeof(long),
oldNullable: true);
migrationBuilder.AddForeignKey(
name: "FK_timeline_posts_users_author",
table: "timeline_posts",
column: "author",
principalTable: "users",
principalColumn: "id",
onDelete: ReferentialAction.Cascade);
}
}
}
|
