Struct Summary 

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

A figure a list shows under its rows: how many records it selects under the reader’s tab, search and filters, across every page, or how many of those a predicate selects.

A summary counts in the database, one count query per summary each time the list renders, so it reads the whole result set, not the page it shows: mind the cost on a Pagination::Cursor list too large to count. A summary with no predicate reuses the count a Pagination::Pages list takes for its pager, and a list showing no rows counts nothing. Like a ListTab, it is not access control: a summary whose predicate reads a field field_access hides from the user does not show to them, the panel reading the fields off the predicate.

use tablo_core::{Summary, Table, TextColumn, lens};

Table::new(TextColumn::new(lens!(Post.title)))
    .summary(Summary::count("Posts"))
    .summary(Summary::count("Published").query(Post::fields().published().eq(true)));

Implementations

impl<M> Summary<M>

pub fn count(label: impl Into<Text>) -> Self

Count the records the list selects, labelled label.

pub fn query(self, predicate: Expr<bool>) -> Self

Count only the records predicate selects among the list’s.

Trait Implementations

impl<M> Clone for Summary<M>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.