Macro assert_columns 

macro_rules! assert_columns {
    ($entity:ty, $fields:expr $(,)?) => { ... };
}

Assert at compile time that every one of fields has a column on entity.

fields is a &'static [&'static str], e.g. a model’s <Model as queryweave::PersistedFields>::FIELD_NAMES; entity a type implementing Columns.

Expands to an anonymous const item, so a missing column fails the build, cargo check included, with a message naming the field and the entity. The SQL helpers of this crate run the same check themselves when instantiated for an entity and a model; this standalone form additionally reports it in cargo check and the editor.

Examples

struct Order;

impl queryweave_sql::Columns for Order {
    const NAME: &'static str = "Order";
    const COLUMNS: &'static [(&'static str, &'static str)] =
        &[("number", "number"), ("delivery_date", "delivered_at")];
}

queryweave_sql::assert_columns!(Order, &["number", "delivery_date"]);