rustyroad 1.7.2

Rusty Road is a framework written in Rust that is based on Ruby on Rails. It is designed to provide the familiar conventions and ease of use of Ruby on Rails, while also taking advantage of the performance and efficiency of Rust.
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//! One column, resolved into the field that represents it.

use crate::generators::tetherscript::types::Kind;

/// A column resolved into the field that represents it.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Field {
    /// The column name, used both as the SQL identifier and the map key.
    ///
    /// Unlike the Rust generator there is no renaming: a map key is a string, so the
    /// column name is always usable as written and a second spelling would only give
    /// the row two names for one value.
    pub column: String,
    pub kind: Kind,
    pub primary_key: bool,
    /// True when the database supplies the value, via a sequence or identity.
    pub generated: bool,
    pub nullable: bool,
}

impl Field {
    /// Returns `true` when a caller supplies this field on insert.
    pub fn insertable(&self) -> bool {
        !self.generated && !self.timestamp()
    }

    /// Returns `true` when an update writes this field.
    pub fn updatable(&self) -> bool {
        !self.primary_key && !self.generated && !self.timestamp()
    }

    /// Returns `true` when the field is required, so validation must reject an empty.
    pub fn required(&self) -> bool {
        !self.nullable && self.insertable()
    }

    /// Returns `true` when the column is an audit timestamp the database maintains.
    fn timestamp(&self) -> bool {
        matches!(self.column.as_str(), "created_at" | "updated_at")
    }
}