Struct MigrationContext 

pub struct MigrationContext { /* private fields */ }

A mutable document context passed through each migration step.

Implementations

impl MigrationContext

pub fn new(doc: Value) -> Self

Create a new migration context from a document value.

pub fn get(&self, key: &str) -> Option<&Value>

Get a field from the document by key.

pub fn set(&mut self, key: &str, value: Value)

Set a field in the document.

pub fn remove(&mut self, key: &str) -> Option<Value>

Remove a field from the document, returning its previous value if present.

pub fn into_doc(self) -> Value

Consume the context and return the underlying document.

pub fn doc(&self) -> &Value

Borrow the underlying document value.