Enum Many 

pub enum Many<T> {
    Data(Vec<T>),
    NotFetched,
    None,
}

Enum for defining one-to-many or many-to-many relationships

Variants

Data(Vec<T>)

This holds the created/fetched data in a vector

NotFetched

For when the data exists but is not fetched

None

For when you have no data to fill or fetch from the DB

Implementations

impl<T> Many<T>

pub fn data(&self) -> Result<&Vec<T>>

Returns the Vec of data if they exist and were fetched/created

pub fn data_mut(&mut self) -> Result<&mut Vec<T>>

Returns the mutable Vec of data if they exist and were fetched/created

pub fn is_data(&self) -> bool

Is this a Data variant?

pub fn is_not_fetched(&self) -> bool

Is this a NotFetched variant?

pub fn is_none(&self) -> bool

Is this a None variant?

Trait Implementations

impl<T: Clone> Clone for Many<T>

fn clone(&self) -> Many<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Many<T>

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

Formats the value using the given formatter.

impl<T> Default for Many<T>

fn default() -> Many<T>

Returns the “default value” for a type.

impl<'de, T> Deserialize<'de> for Many<T>

where T: Deserialize<'de>,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> From<Vec<T>> for Many<T>

fn from(entities: Vec<T>) -> Self

Converts to this type from the input type.

impl<T: PartialEq> PartialEq for Many<T>

fn eq(&self, other: &Many<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> Serialize for Many<T>

where T: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T: Eq> Eq for Many<T>

impl<T> StructuralPartialEq for Many<T>