Struct CountColumn 

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

A column counting the records of a Deferred has_many field, which declares the field’s include so every page that renders it loads the records.

use tablo_core::{CountColumn, relation};

CountColumn::new(relation!(Post.comments));

The header and the column’s name are the field’s name, capitalized, until label replaces both.

The count is the length of the loaded list: a page loads every related record of every row it counts, and the related resource’s query and policy do not apply, so the count includes records its own list hides.

Implementations

impl<M> CountColumn<M>

where M: Model,

pub fn new<T>(relation: RelationLens<M, Deferred<Vec<T>>>) -> Self

where T: Model + 'static, M: 'static,

Declare a column counting the records relation loads.

pub fn label(self, label: impl Into<String>) -> Self

Replace the label the field’s name gives it, and name the column after the label, as a ComputedColumn is: two columns over one relation need two labels.

pub fn width(self, width: ColumnWidth) -> Self

Declare this column’s width.

Trait Implementations

impl<M> Clone for CountColumn<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> Column<M> for CountColumn<M>

where M: Model + Send + Sync + 'static,

fn name(&self) -> &str

The column’s identifier, distinct within its table.

fn label(&self) -> &str

The header text.

fn text(&self, cx: &Cx, row: &M) -> String

The row’s value as plain text.

fn column_width(&self) -> ColumnWidth

The width the column claims.

fn includes(&self) -> Includes<M>

The relations text, cell and entry read.

fn cell<'a>(&self, cx: &'a Cx, row: &M) -> BoxView<'a>

The row’s table cell.

fn entry<'a>(&self, cx: &'a Cx, row: &M) -> BoxView<'a>

The record’s entry on a detail page: the label over the cell.

fn is_searchable(&self) -> bool

Whether the column joins the table’s search.

fn search_expr(&self, _term: &str) -> Option<Expr<bool>>

The predicate a search for term adds.

fn is_sortable(&self) -> bool

Whether the header links to a sort on this column.

fn order_by(&self, _descending: bool) -> Option<OrderByExpr>

The ordering a sort on this column applies.

impl<M> Debug for CountColumn<M>

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

Formats the value using the given formatter.

impl<M> IntoColumns<M> for CountColumn<M>

where M: Model + Send + Sync + 'static,

impl<M> IntoDetail<M> for CountColumn<M>

where M: Model + Send + Sync + 'static,

fn into_detail(self) -> Detail<M>