Support BtreeMap and HashMap for deserialization using TryGetableFromJson

[chinmaypandya]

PR Info

Field now supports BTreeMap and HashMap

• Closes Json field to support BTreeMap and HashMap #2357

• Dependencies:

• Dependents:

New Features

• Implement TryGetableFromJson for HashMap<K, V> and BTreeMap<K, V> to
  allow SeaORM to deserialize JSON database columns directly into these map
  types.

impl<K, V> TryGetableFromJson for HashMap<K, V>
where
    K: DeserializeOwned + Eq + Hash,
    V: DeserializeOwned,
{}

impl<K, V> TryGetableFromJson for BTreeMap<K, V>
where
    K: DeserializeOwned + Ord,
    V: DeserializeOwned,
{}

This enables users to define entity fields such as:

BTreeMap<String, T>
HashMap<String, T>

for JSON columns without requiring custom wrapper types.

Added unit tests:

• json_deserialize_to_btreemap
• json_deserialize_to_hashmap

Example usage

#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, FromJsonQueryResult)]
pub struct Component {
    base_price: Decimal,
    component_type: String,
}

#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq)]
#[sea_orm(table_name = "product")]
pub struct Model {
    #[sea_orm(primary_key, auto_increment = false)]
    pub id: Uuid,
    pub name: String,
    pub component_list: BTreeMap<String, Component>, // Now possible
}

Tests

Bug Fixes

Breaking Changes

Changes

• [ ]

[Huliiiiii]

Could you clean up the comments? A lot of them are unnecessary.

[chinmaypandya]

Yeah sure let me reduce the comments content

[Huliiiiii]

This is also unnecessary.

[chinmaypandya]

So no comments at all ? Should I also remove cfg feature ?

[Huliiiiii]

TryGetableFromJson requires with-json feature

[chinmaypandya]

Okay so I will just remove the comments

[chinmaypandya]

Done! please review