Struct DynamicModel 

pub struct DynamicModel { /* private fields */ }

A dynamically-defined model for tables whose schema is determined at runtime.

Unlike compile-time Model structs, DynamicModel stores column definitions and values in hash maps, trading type safety for flexibility.

Example

use sqlmodel_core::dynamic::{DynamicModel, ColumnDef};
use sqlmodel_core::types::SqlType;
use sqlmodel_core::value::Value;

let mut model = DynamicModel::new("users");
model.add_column(ColumnDef::new("id", SqlType::BigInt).primary_key().auto_increment());
model.add_column(ColumnDef::new("name", SqlType::Text));
model.add_column(ColumnDef::new("email", SqlType::Text));

model.set("name", Value::Text("Alice".to_string()));
model.set("email", Value::Text("alice@example.com".to_string()));

assert_eq!(model.get("name").unwrap().as_str(), Some("Alice"));

Implementations

impl DynamicModel

pub fn new(table_name: impl Into<String>) -> Self

Create a new dynamic model for the given table.

pub fn add_column(&mut self, column: ColumnDef)

Add a column definition.

pub fn table_name(&self) -> &str

Get the table name.

pub fn columns(&self) -> &[ColumnDef]

Get column definitions.

pub fn primary_key_columns(&self) -> Vec<&str>

Get primary key column names.

pub fn set(&mut self, column: impl Into<String>, value: Value)

Set a value for a column.

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

Get a value for a column.

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

Remove a value, returning it.

pub fn has(&self, column: &str) -> bool

Check if a column has a value set.

pub fn to_insert_pairs(&self) -> Vec<(&str, &Value)>

Get all column-value pairs for non-null, non-auto-increment columns.

Suitable for building INSERT statements.

pub fn primary_key_values(&self) -> Vec<Value>

Get primary key values.

pub fn from_row(&mut self, row: &Row) -> Result<()>

Populate from a database row.

pub fn new_from_row( table_name: impl Into<String>, columns: Vec<ColumnDef>, row: &Row, ) -> Result<Self>

Create a new DynamicModel instance from a row.

Trait Implementations

impl Clone for DynamicModel

fn clone(&self) -> DynamicModel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DynamicModel

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

Formats the value using the given formatter.