2024-08-12 22:41:06 +08:00
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use std::fmt;
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use std::str::FromStr;
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2024-08-11 09:25:09 +00:00
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use serde::{de, Deserialize, Deserializer};
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#[derive(Debug, Deserialize)]
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pub struct Params {
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#[serde(default, deserialize_with="empty_string_as_none")]
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2024-08-12 22:41:06 +08:00
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pub transaction_id: Option<i64>,
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}
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// Serde deserialization decorator to map empty Strings to None,
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fn empty_string_as_none<'de, D, T>(de: D) -> Result<Option<T>, D::Error>
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where
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D: Deserializer<'de>,
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T: FromStr,
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T::Err: fmt::Display,
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{
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let opt = Option::<String>::deserialize(de)?;
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match opt.as_deref() {
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None | Some("") => Ok(None),
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Some(s) => FromStr::from_str(s).map_err(de::Error::custom).map(Some),
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}
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}
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