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
|
import "reflect-metadata";
import { BaseEntity, BeforeInsert, BeforeUpdate, PrimaryColumn } from "typeorm";
import { Snowflake } from "../util/Snowflake";
import Ajv, { ValidateFunction } from "ajv";
import schema from "./schema.json";
import "missing-native-js-functions";
// TODO use class-validator https://typeorm.io/#/validation with class annotators (isPhone/isEmail) combined with types from typescript-json-schema
// btw. we don't use class-validator for everything, because we need to explicitly set the type instead of deriving it from typescript also it doesn't easily support nested objects
const ajv = new Ajv({
removeAdditional: "all",
useDefaults: true,
coerceTypes: true,
// @ts-ignore
validateFormats: false,
allowUnionTypes: true,
});
export class BaseClass extends BaseEntity {
@PrimaryColumn()
id: string;
// @ts-ignore
constructor(props?: any, public opts: { id?: string } = {}) {
super();
this.assign(props);
if (!this.construct.schema) {
this.construct.schema = ajv.compile({ ...schema, $ref: `#/definitions/${this.construct.name}` });
}
this.id = this.opts.id || Snowflake.generate();
}
get construct(): any {
return this.constructor;
}
get metadata() {
return this.construct.getRepository().metadata;
}
assign(props: any) {
if (!props || typeof props !== "object") return;
delete props.opts;
const properties = new Set(this.metadata.columns.map((x: any) => x.propertyName));
// will not include relational properties (e.g. @RelationId @ManyToMany)
for (const key in props) {
if (this.hasOwnProperty(key)) continue;
if (!properties.has(key)) continue;
// @ts-ignore
const setter = this[`set${key.capitalize()}`];
if (setter) {
setter.call(this, props[key]);
} else {
Object.defineProperty(this, key, { value: props[key] });
}
}
}
@BeforeUpdate()
@BeforeInsert()
validate() {
const valid = this.construct.schema(this.toJSON());
if (!valid) throw ajv.errors;
return this;
}
toJSON(): any {
// @ts-ignore
return Object.fromEntries(this.metadata.columns.map((x) => [x.propertyName, this[x.propertyName]]));
}
}
|
