use params::{Map, Value};
pub fn validate_filled(values: &Map, field: &[&str]) -> Result<Option<Value>, String> {
match values.find(field) {
Some(&Value::String(ref value)) if value.is_empty() => {
Err(format!("The {} field must be filled.",
field.last()
.unwrap()
.to_lowercase()
.replace("_", " ")))
}
Some(&Value::Array(ref value)) if value.is_empty() => {
Err(format!("The {} field must be filled.",
field.last()
.unwrap()
.to_lowercase()
.replace("_", " ")))
}
Some(&Value::Map(ref value)) if value.is_empty() => {
Err(format!("The {} field must be filled.",
field.last()
.unwrap()
.to_lowercase()
.replace("_", " ")))
}
Some(&Value::Null) => {
Err(format!("The {} field must be filled.",
field.last()
.unwrap()
.to_lowercase()
.replace("_", " ")))
}
_ => Ok(None),
}
}