Struct django_query::ordering::OrderingSet

pub struct OrderingSet<R> { /* private fields */ }

A collection of sort orders, built from a Sortable type.

Implementations

impl<R: Sortable + 'static> OrderingSet<R>

pub fn new() -> Self

Create a new OrderingSet for a Sortable type.

pub fn create_sort(&self, expr: &str) -> Result<Box<dyn Sorter<R>>, SorterError>

Parse a sort expression and return a Sorter.

Valid sort expressions consist of a comma-separated list of sorts, each of which may be optionally preceded by a - to reverse its sense.

Trait Implementations

impl<R: Sortable + 'static> Default for OrderingSet<R>

fn default() -> Self

Returns the “default value” for a type.

impl<R: Sortable> SortVisitor for OrderingSet<R>

type Target = R

fn visit_sort<F, T, S>(&mut self, name: &str, field: &F, sort: &S) where
    F: Field<R, Value = T> + 'static,
    S: SorterTypedClass<T> + 'static,
    <S as SorterTypedClass<T>>::Sorter: 'static, 

Receive a basic sort on a given raw Field, named name. The comparison operator itself is given as sort.

fn visit_key_sort<F, T>(&mut self, name: &str, field: &F, key: &str) where
    F: Field<R, Value = T> + 'static,
    T: Sortable + 'static, 

Receive a key sort on a member field which is itself Sortable.