Class Transform
public
Module:
@ember-data/serializer
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 '@ember-data/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 '@ember-data/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();
}
}