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Package transformer
Short Description An interface and abstract class useful for the production of objects which transform data.
License MIT
Informations about the package transformer
Transformers
Here we define an interface for Transformers as well as an Abstract class from which concrete objects that transform data based on field names can be built. The goal: to standardize the way that Dash creates transformers in their work.
Installation
composer require dashifen/transformer
Usage
You can either extend the AbstractTransformer
object or simply implement the TransformerInterface
on your own. The interface defines two methods:
canTransform
- returns a Boolean value to tell the calling scope if data can be transformed based on a$field
parameter.transform
- returns a transformed$value
based on a$field
parameter.
The AbstractTransformer
implements both of these for you while requiring that you define a third method: a protected getTransformationMethod
method. It returns the name of another method that is assumed to be of the same object that can transform data labeled by $field
.
Example
In this example, we're assuming that the naming convention for the application's fields is to use kebab-case.
The above little class represents a simple, concrete object based on the functionality of the AbstractTransformer
found within this repo. The abstract object's implementation of the canTransform
and transform
methods of our interface make sure that we use the getTransformationMethod
to identify the name of a method that can transform data labeled by $field
and then will call that method when we need it returning its result.