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ModelMeta

Struct ModelMeta 

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pub struct ModelMeta {
    pub name: &'static str,
    pub table: &'static str,
    pub fields: &'static [FieldMeta],
    pub many_to_many: &'static [ManyToManyMeta],
    pub ordering: &'static [(&'static str, OrderDirection)],
    pub indexes: &'static [IndexMeta],
    pub constraints: &'static [ConstraintMeta],
    pub managed: bool,
}
Expand description

Static metadata of a model (Django Meta plus the field list).

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§name: &'static str

Rust type name (User); also the migration model name.

§table: &'static str

Table name.

§fields: &'static [FieldMeta]

Concrete columns in declaration order.

§many_to_many: &'static [ManyToManyMeta]

Many-to-many relations (not columns).

§ordering: &'static [(&'static str, OrderDirection)]

Default ordering as (column, direction).

§indexes: &'static [IndexMeta]

Named indexes.

§constraints: &'static [ConstraintMeta]

Table constraints.

§managed: bool

Whether migrations manage this table (false for unmanaged tables/views).

Implementations§

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impl ModelMeta

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pub fn pk(&self) -> Option<&'static FieldMeta>

The primary-key column.

The derive rejects models without exactly one primary key, so this is only None for hand-written, invalid metadata.

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pub fn field(&self, name: &str) -> Option<&'static FieldMeta>

Field by Rust name.

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pub fn column(&self, column: &str) -> Option<&'static FieldMeta>

Field by column name.

Trait Implementations§

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impl Clone for ModelMeta

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fn clone(&self) -> ModelMeta

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for ModelMeta

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impl Debug for ModelMeta

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

Formats the value using the given formatter. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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