Documentation / @ember-data/serializer / transform / default

Class: default

Defined in: warp-drive-packages/legacy/declarations/serializer/-private/transforms/transform.d.ts:3

The Transform class is used to serialize and deserialize model attributes when they are saved or loaded from an adapter. Subclassing Transform is useful for creating custom attributes. All subclasses of Transform must implement a serialize and a deserialize method.

Example

app/transforms/temperature.js

// Converts centigrade in the JSON to fahrenheit in the app
export default class TemperatureTransform {
deserialize(serialized, options) {
return (serialized *  1.8) + 32;
}

serialize(deserialized, options) {
return (deserialized - 32) / 1.8;
}

static create() {
return new this();
}
}

Usage

app/models/requirement.js

import { Model, attr } from '@warp-drive/legacy/model';

export default class RequirementModel extends Model {
@attr('string') name;
@attr('temperature') temperature;
}

The options passed into the attr function when the attribute is declared on the model is also available in the transform.

app/models/post.js

import { Model, attr } from '@warp-drive/legacy/model';

export default class PostModel extends Model {
@attr('string') title;
@attr('markdown', {
markdown: {
gfm: false,
sanitize: true
}
})
markdown;
}

app/transforms/markdown.js

export default class MarkdownTransform {
serialize(deserialized, options) {
return deserialized.raw;
}

deserialize(serialized, options) {
let markdownOptions = options.markdown || {};

return marked(serialized, markdownOptions);
}

static create() {
return new this();
}
}

Transform