Enum Dialect 

pub enum Dialect {
    Postgres,
    Sqlite,
}

A supported database dialect.

Variants

Postgres

Sqlite

Implementations

impl Dialect

pub fn from_database(database: &str) -> Self

Pick the dialect from the manifest’s stack.database ("sqlite" → SQLite, else the Postgres default).

pub fn id_pk_ddl(self) -> &'static str

The id primary-key column DDL (no trailing comma). Postgres generates the UUID in the database; SQLite has no UUID generator, so the app supplies it on insert.

pub fn app_generates_id(self) -> bool

Whether the app must generate id on insert (SQLite) rather than the database (Postgres).

pub fn column_type(self, ty: FieldType) -> &'static str

The SQL column type for a scalar field.

pub fn timestamp_type_default(self) -> &'static str

The TYPE NOT NULL DEFAULT ... fragment for the created_at/updated_at columns.

pub fn now_expr(self) -> &'static str

The SQL expression for “now” used in UPDATE ... SET updated_at = <now>.

pub fn placeholder(self, n: usize) -> String

A bind placeholder for parameter n (1-based): $n on Postgres, ?n on SQLite.

pub fn pool_type(self) -> &'static str

The sqlx pool type used in generated code.

pub fn pool_options(self) -> &'static str

The sqlx pool-options type.

pub fn sqlx_module(self) -> &'static str

The sqlx submodule the pool types live in (sqlx::postgres / sqlx::sqlite).

pub fn sqlx_feature(self) -> &'static str

The sqlx feature to enable in the generated Cargo.toml.

pub fn unique_violation_code(self) -> &'static str

The integrity-error code a unique violation reports (mapped to 409 in generated code). Postgres SQLSTATE 23505; SQLite extended result code 2067 (SQLITE_CONSTRAINT_UNIQUE).

pub fn foreign_key_violation_code(self) -> &'static str

The integrity-error code a foreign-key violation reports (mapped to 409). Postgres 23503; SQLite 787 (SQLITE_CONSTRAINT_FOREIGNKEY).

pub fn example_url(self, project: &str) -> String

An example DATABASE_URL for .env.example.

Trait Implementations

impl Clone for Dialect

fn clone(&self) -> Dialect

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Dialect

impl Debug for Dialect

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

Formats the value using the given formatter.

impl Eq for Dialect

impl PartialEq for Dialect

fn eq(&self, other: &Dialect) -> 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 StructuralPartialEq for Dialect