Struct PropertyBuilder 

pub struct PropertyBuilder<'a, T, V = ()> { /* private fields */ }

Implementations

impl<'a, T, V> PropertyBuilder<'a, T, V>

pub fn is_required(self) -> Self

pub fn is_optional(self) -> Self

Marks the column nullable (opposite of Self::is_required).

pub fn has_column_type(self, sql_type: &str) -> Self

Overrides the database column type verbatim for every dialect (HasColumnType), e.g. "JSON", "MEDIUMTEXT", "DECIMAL(12,2)".

pub fn has_precision(self, precision: u32, scale: u32) -> Self

Sets decimal/numeric precision and scale (HasPrecision(p, s)).

For temporal types the precision is emitted as the fractional-seconds precision (DATETIME(p) / TIMESTAMP(p)).

pub fn is_fixed_length(self) -> Self

Uses a fixed-length string type (CHAR(n)), n = max_length.

pub fn has_collation(self, name: &str) -> Self

Sets a column-level collation (HasCollation), emitted as COLLATE <name> (include quotes yourself for quoted names).

pub fn has_comment(self, text: &str) -> Self

Sets a column comment (HasComment).

pub fn has_computed_column_sql(self, sql: &str) -> Self

Declares a generated/computed column (HasComputedColumnSql).

sql is a raw SQL expression (e.g. unit_price * quantity). Computed columns are excluded from INSERT/UPDATE. Use Self::is_stored to persist the value (required by PostgreSQL).

pub fn is_stored(self) -> Self

Persists a computed column (STORED); no-op for non-computed columns.

pub fn is_concurrency_token(self) -> Self

Marks the column as an optimistic concurrency token.

pub fn has_max_length(self, n: usize) -> Self

pub fn has_column_name(self, name: &'static str) -> Self

pub fn is_unique(self) -> Self

pub fn has_index(self) -> Self

pub fn has_default(self, sql: &str) -> Self

Sets a raw SQL DEFAULT expression, e.g. .has_default("1") or .has_default("CURRENT_TIMESTAMP"). String literals must include their quotes ("'pending'").

pub fn has_check(self, expression: &str) -> Self

Adds a column-level CHECK constraint. The constraint name is derived as CK_<table>_<column> at model-build time (so table renames apply).