valico/json_dsl/validators/
at_least_one_of.rs

1use serde_json::{Value};
2
3use super::super::errors;
4
5pub struct AtLeastOneOf {
6    params: Vec<String>
7}
8
9impl AtLeastOneOf {
10    pub fn new(params: &[&str]) -> AtLeastOneOf {
11        AtLeastOneOf {
12            params: params.iter().map(|s| s.to_string()).collect()
13        }
14    }
15}
16
17impl super::Validator for AtLeastOneOf {
18    fn validate(&self, val: &Value, path: &str) -> super::ValidatorResult {
19
20        let object = strict_process!(val.as_object(), path, "The value must be an object");
21
22        let mut matched = vec![];
23        for param in self.params.iter() {
24            if object.contains_key(param) { matched.push(param.clone()); }
25        }
26
27        let len = matched.len();
28        if len >= 1 {
29            Ok(())
30        } else {
31            Err(vec![
32                Box::new(errors::AtLeastOne {
33                    path: path.to_string(),
34                    detail: Some("At least one must be present".to_string()),
35                    params: self.params.clone()
36                })
37            ])
38        }
39    }
40}