Struct MigrationId 

pub struct MigrationId { /* private fields */ }

A typed compound migration identity; it is never delimiter-joined.

Implementations

impl MigrationId

pub fn new( app_label: impl Into<String>, name: impl Into<String>, ) -> Result<Self, Diagnostic>

Validate and construct a compound migration identity.

pub const fn from_components( app_label: MigrationAppLabel, name: MigrationName, ) -> Self

Construct from already validated components.

pub const fn app_label(&self) -> &MigrationAppLabel

Return the application-label component.

pub const fn name(&self) -> &MigrationName

Return the filename-stem name component.

pub fn canonical_bytes(&self) -> Result<Vec<u8>, Diagnostic>

Return exact canonical compound-ID bytes.

pub fn ledger_key(&self) -> Result<MigrationLedgerKey, Diagnostic>

Derive the domain-separated ledger key for this compound identity.

Trait Implementations

impl Clone for MigrationId

fn clone(&self) -> MigrationId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MigrationId

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

Formats the value using the given formatter.

impl Eq for MigrationId

impl Hash for MigrationId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for MigrationId

fn cmp(&self, other: &MigrationId) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for MigrationId

fn eq(&self, other: &MigrationId) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for MigrationId

fn partial_cmp(&self, other: &MigrationId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for MigrationId

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MigrationId