Don't serialize None

crates/protocol/Cargo.toml

@@ -13,4 +13,5 @@ jsonschema = "0.17.1"
 serde = { version = "1.0.193", features = ["derive"] }
 serde_json = "1.0.108"
 type-safe-id = { version = "0.2.1", features = ["serde"] }
-thiserror = "1.0.50"
+thiserror = "1.0.50"
+serde_with = "3.4.0"

crates/protocol/src/message/close.rs

@@ -1,5 +1,6 @@
 use ::serde::{Deserialize, Serialize};
 use chrono::Utc;
+use serde_with::skip_serializing_none;
 use type_safe_id::{DynamicType, TypeSafeId};
 
 use super::{Message, MessageError, MessageKind, MessageMetadata};
@@ -37,6 +38,7 @@ impl Close {
 /// See [Quote](https://github.com/TBD54566975/tbdex/tree/main/specs/protocol#close) for more
 /// information.
 #[derive(Debug, Deserialize, PartialEq, Serialize)]
+#[skip_serializing_none]
 #[serde(rename_all = "camelCase")]
 pub struct CloseData {
     /// an explanation of why the exchange is being closed/completed

crates/protocol/src/message/order_status.rs

@@ -43,7 +43,6 @@ impl OrderStatus {
 #[serde(rename_all = "camelCase")]
 pub struct OrderStatusData {
   /// Current status of Order that's being executed
-
   order_status: String,
 }
 

crates/protocol/src/message/quote.rs

@@ -1,5 +1,6 @@
 use ::serde::{Deserialize, Serialize};
 use chrono::{DateTime, Utc};
+use serde_with::skip_serializing_none;
 use type_safe_id::{DynamicType, TypeSafeId};
 
 use super::{Message, MessageError, MessageKind, MessageMetadata};
@@ -35,6 +36,7 @@ impl Quote {
 /// See [Quote](https://github.com/TBD54566975/tbdex/tree/main/specs/protocol#quote) for more
 /// information.
 #[derive(Debug, Deserialize, PartialEq, Serialize)]
+#[skip_serializing_none]
 #[serde(rename_all = "camelCase")]
 pub struct QuoteData {
     /// When this quote expires. Expressed as ISO8601
@@ -48,6 +50,7 @@ pub struct QuoteData {
 }
 
 #[derive(Debug, Deserialize, PartialEq, Serialize)]
+#[skip_serializing_none]
 #[serde(rename_all = "camelCase")]
 pub struct QuoteDetails {
     /// ISO 3166 currency code string
@@ -59,6 +62,7 @@ pub struct QuoteDetails {
 }
 
 #[derive(Debug, Deserialize, PartialEq, Serialize)]
+#[skip_serializing_none]
 #[serde(rename_all = "camelCase")]
 pub struct PaymentInstructions {
     /// Link or Instruction describing how to pay the PFI.
@@ -68,6 +72,8 @@ pub struct PaymentInstructions {
 }
 
 #[derive(Debug, Deserialize, PartialEq, Serialize)]
+#[skip_serializing_none]
+
 #[serde(rename_all = "camelCase")]
 pub struct PaymentInstruction {
     /// Link or Instruction describing how to pay the PFI.

crates/protocol/src/resource/offering.rs

@@ -4,6 +4,7 @@ use credentials::pex::v2::PresentationDefinition;
 use jsonschema::{Draft, JSONSchema};
 use serde::{Deserialize, Serialize};
 use serde_json::Value as JsonValue;
+use serde_with::skip_serializing_none;
 
 /// Struct that interacts with an [`Offering`] [`Resource`]
 pub struct Offering;
@@ -55,6 +56,7 @@ pub struct OfferingData {
 }
 
 #[derive(Debug, Default, Deserialize, PartialEq, Serialize)]
+#[skip_serializing_none]
 #[serde(rename_all = "camelCase")]
 pub struct CurrencyDetails {
     /// ISO 3166 currency code string
@@ -66,6 +68,7 @@ pub struct CurrencyDetails {
 }
 
 #[derive(Debug, Default, Deserialize, PartialEq, Serialize)]
+#[skip_serializing_none]
 #[serde(rename_all = "camelCase")]
 pub struct PaymentMethod {
     /// Type of payment method (i.e. `DEBIT_CARD`, `BITCOIN_ADDRESS`, `SQUARE_PAY`)