modo/validate/
traits.rs

1use super::ValidationError;
2
3/// Types that can validate their own fields.
4///
5/// Implement this trait on request structs and call `validate()` inside your
6/// handler before processing the input. Use `?` to propagate the
7/// [`ValidationError`] as a [`crate::Error`] (HTTP 422).
8///
9/// # Example
10///
11/// ```rust,no_run
12/// use modo::validate::{Validate, ValidationError, Validator};
13///
14/// struct SignUp {
15///     username: String,
16/// }
17///
18/// impl Validate for SignUp {
19///     fn validate(&self) -> Result<(), ValidationError> {
20///         Validator::new()
21///             .field("username", &self.username, |f| f.required().min_length(3))
22///             .check()
23///     }
24/// }
25/// ```
26pub trait Validate {
27    /// Validate this value, returning all field-level errors at once.
28    ///
29    /// # Errors
30    ///
31    /// Returns [`ValidationError`] containing every failing field and its
32    /// error messages when one or more fields are invalid.
33    fn validate(&self) -> Result<(), ValidationError>;
34}
modo/validate/traits.rs

modo/validate/
traits.rs
