Struct EntityLoader 

pub struct EntityLoader { /* private fields */ }

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Implementations

impl EntityLoader

pub async fn one<C: ConnectionTrait>( self, db: &C, ) -> Result<Option<ModelEx>, DbErr>

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pub async fn all<C: ConnectionTrait>( self, db: &C, ) -> Result<Vec<ModelEx>, DbErr>

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pub fn with<T: EntityLoaderWithParam>(self, param: T) -> Self

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pub async fn load<C: ConnectionTrait>( models: Vec<ModelEx>, with: &EntityLoaderWith, nest: &EntityLoaderNest, db: &C, ) -> Result<Vec<ModelEx>, DbErr>

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pub async fn load_nest<C: ConnectionTrait>( models: Vec<Option<ModelEx>>, with: &EntityLoaderWith, db: &C, ) -> Result<Vec<Option<ModelEx>>, DbErr>

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pub async fn load_nest_nest<C: ConnectionTrait>( models: Vec<Vec<ModelEx>>, with: &EntityLoaderWith, db: &C, ) -> Result<Vec<Vec<ModelEx>>, DbErr>

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Trait Implementations

impl Clone for EntityLoader

fn clone(&self) -> EntityLoader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EntityLoader

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

Formats the value using the given formatter.

impl EntityLoaderTrait<Entity> for EntityLoader

type ModelEx = ModelEx

The return type of this loader

fn filter_by_id<T>(self, values: T) -> Self

where T: Into<<<E as EntityTrait>::PrimaryKey as PrimaryKeyTrait>::ValueType>,

Find a model by primary key

fn order_by_id_asc(self) -> Self

Apply order by primary key to the query statement

fn order_by_id_desc(self) -> Self

Apply order by primary key to the query statement

fn order_by_id(self, order: Order) -> Self

Apply order by primary key to the query statement

fn paginate<'db, C>( self, db: &'db C, page_size: u64, ) -> EntityLoaderPaginator<'db, C, E, Self>

where C: ConnectionTrait,

Paginate query.

impl QueryFilter for EntityLoader

type QueryStatement = <Select<Entity> as QueryFilter>::QueryStatement

fn query(&mut self) -> &mut Self::QueryStatement

Add the query to perform a FILTER on

fn filter<F>(self, filter: F) -> Self

where F: IntoCondition,

Add an AND WHERE expression

fn filter_mut<F>(&mut self, filter: F)

where F: IntoCondition,

Like Self::filter, but without consuming self

fn belongs_to<M>(self, model: &M) -> Self

where M: ModelTrait,

Apply a where condition using the model’s primary key

fn belongs_to_tbl_alias<M>(self, model: &M, tbl_alias: &str) -> Self

where M: ModelTrait,

Like belongs_to, but via a table alias

impl QueryOrder for EntityLoader

type QueryStatement = <Select<Entity> as QueryOrder>::QueryStatement

fn query(&mut self) -> &mut Self::QueryStatement

Add the query to perform an ORDER BY operation

fn order_by<C>(self, col: C, ord: Order) -> Self

where C: IntoSimpleExpr,

Add an order_by expression

fn order_by_asc<C>(self, col: C) -> Self

where C: IntoSimpleExpr,

Add an order_by expression (ascending)

fn order_by_desc<C>(self, col: C) -> Self

where C: IntoSimpleExpr,

Add an order_by expression (descending)

fn order_by_with_nulls<C>(self, col: C, ord: Order, nulls: NullOrdering) -> Self

where C: IntoSimpleExpr,

Add an order_by expression with nulls ordering option