Pipes are small fragments of code that transform data values so they can be displayed to the user in templates. Pipes allow transformation logic to be defined in self-contained classes so that it can be applied consistently throughout an application. Table 18-1 puts pipes in context.
Table 18-1. Putting Pipes in Context
What are they?
Pipes are classes that are used to prepare data for display to the user.
Why are they useful?
Pipes allow preparation logic to be defined in a single class that can be used throughout an application, ensuing that data is presented consistently.
How are they used? ...