Trait mongod::Filter [−][src]
Used to mark a type as a filter for use in queries.
Examples
Creating a filter for user.
use std::convert::TryFrom; use mongod::bson::Document; use mongod::{Filter, Comparator, Error}; use mongod::ext::bson::Bson; #[derive(Default)] pub struct UserFilter { name: Option<Comparator<String>>, } impl Filter for UserFilter { fn new() -> Self { Self::default() } fn into_document(self) -> Result<Document, Error> { let mut doc = Document::new(); if let Some(value) = self.name { doc.insert("name", Bson::try_from(value)?.0); } Ok(doc) } }
Required methods
fn new() -> Self
[src]
Constructs a new Filter
.
fn into_document(self) -> Result<Document, Error>
[src]
Converts a Filter
into a BSON Document
.