Struct Reads 

pub struct Reads<M> { /* private fields */ }

The fields of M a Column or a Filter reads, by the root field each path starts at: what field_access hides it by.

use tablo_core::{ComputedColumn, Reads, lens};

ComputedColumn::new("Pay", |e: &Employee| (e.salary + e.bonus).to_string())
    .reading(Reads::of(lens!(Employee.salary)).and(lens!(Employee.bonus)));

Implementations

impl<M> Reads<M>

pub fn nothing() -> Self

No field: a column or a filter that reads nothing off the row.

pub fn of<T>(path: impl Into<Path<M, T>>) -> Self

where M: Model,

The field path reads.

pub fn and<T>(self, path: impl Into<Path<M, T>>) -> Self

where M: Model,

These fields and the one path reads.

Trait Implementations

impl<M> Clone for Reads<M>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<M> Debug for Reads<M>

fn fmt(&self, __f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<M> Default for Reads<M>

fn default() -> Self

Returns the “default value” for a type.

impl<M: Model, T, P> From<Lens<M, T, P>> for Reads<M>

fn from(lens: Lens<M, T, P>) -> Self

Converts to this type from the input type.

impl<M: Model, T> From<Path<M, T>> for Reads<M>

fn from(path: Path<M, T>) -> Self

Converts to this type from the input type.