Class DS.Transform
The DS.Transform class is used to serialize and deserialize model
attributes when they are saved or loaded from an
adapter. Subclassing DS.Transform is useful for creating custom
attributes. All subclasses of DS.Transform must implement a
serialize and a deserialize method.
Example
import DS from 'ember-data';
// Converts centigrade in the JSON to fahrenheit in the app
export default DS.Transform.extend({
  deserialize(serialized, options) {
    return (serialized *  1.8) + 32;
  },
  serialize(deserialized, options) {
    return (deserialized - 32) / 1.8;
  }
});The options passed into the DS.attr function when the attribute is
declared on the model is also available in the transform.
export default DS.Model.extend({
  title: DS.attr('string'),
  markdown: DS.attr('markdown', {
    markdown: {
      gfm: false,
      sanitize: true
    }
  })
});export default DS.Transform.extend({
  serialize(deserialized, options) {
    return deserialized.raw;
  },
  deserialize(serialized, options) {
    var markdownOptions = options.markdown || {};
    return marked(serialized, markdownOptions);
  }
});Usage
import DS from 'ember-data';
export default DS.Model.extend({
  name: DS.attr('string'),
  temperature: DS.attr('temperature')
});Methods
deserialize (serialized, options) :
Defined in addon/transforms/transform.js:92
- serialized
- The serialized value 
- options
- hash of options passed to - DS.attr
- returns
- The deserialized value 
When given a serialize value from a JSON object this method must return the deserialized value for the record attribute.
Example
deserialize(serialized, options) {
  return empty(serialized) ? null : Number(serialized);
}serialize (deserialized, options) :
Defined in addon/transforms/transform.js:71
- deserialized
- The deserialized value 
- options
- hash of options passed to - DS.attr
- returns
- The serialized value 
When given a deserialized value from a record attribute this method must return the serialized value.
Example
import { isEmpty } from '@ember/utils';
serialize(deserialized, options) {
  return isEmpty(deserialized) ? null : Number(deserialized);
}