Trait django_query::filtering::FilterClass

pub trait FilterClass<R> {
    fn instantiate(&self, rhs: &str) -> Result<Box<dyn Filter<R>>, FilterError>;
}

An object that can make a Filter.

To be useful, we need to be able to store objects that can make different filters for the same target type. That means we need to return a Box<dyn Filter<R>> because we can’t make the actual type we return observable (if we did, we could no longer store different implementors of this trait together).

Required methods

fn instantiate(&self, rhs: &str) -> Result<Box<dyn Filter<R>>, FilterError>

Create a new Filter, parsing the rhs, which are arguments to whatever Operator this Filter encompassses.

Implementors