Trait mongod::Update[−][src]

pub trait Update {
    fn new() -> Self;

    fn into_document(self) -> Result<Document, Error>;
}

Used to mark a type as an update for use in queries.

Examples

Creating an update for user.

use mongod::bson::Document;
use mongod::{Error, Update};

#[derive(Default)]
pub struct UserUpdate {
    pub name: Option<String>,
}

impl Update for UserUpdate {
    fn new() -> Self {
       UserUpdate::default()
    }
    fn into_document(self) -> Result<Document, Error> {
        let mut doc = Document::new();
        if let Some(value) = self.name {
            doc.insert("name", value);
        }
        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.

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Implementors

impl<U: Default + Update> Update for Updates<U>[src]

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