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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        let object = strict_process!(val.as_object(), path, "The value must be an object");
20
21        let mut matched = vec![];
22        for param in self.params.iter() {
23            if object.contains_key(param) {
24                matched.push(param.clone());
25            }
26        }
27
28        let len = matched.len();
29        if len >= 1 {
30            Ok(())
31        } else {
32            Err(vec![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}