Last active
January 18, 2024 19:48
-
-
Save rossnelson/17f8c3deb5979464cf81c1cb0cf96b93 to your computer and use it in GitHub Desktop.
Proxy model allowing helpers tied to data objects
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import _ from 'lodash'; | |
import { DateTime } from 'luxon'; | |
import moment from 'moment-timezone'; | |
class Base<T> { | |
params: T; | |
constructor(params: T) { | |
this.params = params; | |
} | |
get id() { | |
return this.params.id; | |
} | |
get category() { | |
return this.constructor.category; | |
} | |
get type() { | |
return this.constructor.type; | |
} | |
get pluralType() { | |
return this.constructor.pluralType; | |
} | |
static get listURL() { | |
return '/' + _.compact([this.category, this.pluralType]).join('/'); | |
} | |
static get creatorURL() { | |
return ( | |
'/' + _.compact([this.category, this.pluralType, 'create']).join('/') | |
); | |
} | |
static editorURL(id: string) { | |
return ( | |
'/' + _.compact([this.category, this.pluralType, id, 'edit']).join('/') | |
); | |
} | |
get editorURL() { | |
return ( | |
'/' + | |
_.compact([this.category, this.pluralType, this.id, 'edit']).join('/') | |
); | |
} | |
get expiresAt() { | |
const { expiration_date } = this.params; | |
if (!expiration_date) return ''; | |
return moment(expiration_date).tz(moment.tz.guess()).fromNow(); | |
} | |
get createdAt() { | |
const { created_at: createdAt } = this.params; | |
return createdAt ? DateTime.fromSeconds(createdAt) : undefined; | |
} | |
get updatedAt() { | |
const { updated_at: updatedAt } = this.params; | |
return updatedAt ? DateTime.fromSeconds(updatedAt) : undefined; | |
} | |
get lastTimestamp() { | |
return !this.updatedAt ? this.createdAt : this.updatedAt; | |
} | |
patch(properties: Partial<T>) { | |
this.params = { ...this.params, ...properties }; | |
} | |
toJSON() { | |
return this.params; | |
} | |
} | |
var proxyHandler = { | |
get: function <T>(obj: Base<T>, name: keyof T) { | |
return _.isNil(obj.params[name]) ? obj[name] : obj.params[name]; | |
}, | |
set: function <T>(obj: Base<T>, name: keyof T, value: any) { | |
obj.params[name] = value; | |
return true; | |
}, | |
}; | |
export default Base; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import Base from './base-model'; // Assuming 'Base' is in the same directory | |
interface MyObjectParams { | |
id: number; | |
name: string; | |
expiration_date: string; | |
// Add other properties as needed | |
customer: { | |
name: "Ross Nelson" | |
} | |
} | |
class MyObject extends Base<MyObjectParams> { | |
// You can add additional methods or properties specific to MyObject here | |
get customerName() { | |
return this.params.customer.name | |
} | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
const params: MyObjectParams = { | |
id: 1, | |
name: 'Example', | |
expiration_date: '2024-01-31', | |
}; | |
const myInstance = new MyObject(params); | |
console.log(myInstance.id); // Accessing the 'id' property | |
console.log(myInstance.expiresAt); // Accessing the 'expiresAt' method |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment