Set struct field to default if column is NULL

[AdamJSoftware]

I am trying to implement some virtual columns in an external model. However, sometimes these virtual columns are NULL, but in my struct, I have an enum which I would like to set to the value NOTEXPANDED if the field is null. I can do this using regular serde using serde_with. However, the closest I can get with regular sea_orm is sea_orms(skip) but that omits the field value even if the column is set.
Example:

// Opposite of a partial model. ExpandedModel, I have additional virtual fields (link tables) that I query for. In my case, if "accounts" is null. Then it is set to ExpandAccounts::NotExpanded. I don't want to add an Option<> around it.
#[serde_as]
#[derive(FromQueryResult, FromJsonQueryResult, Debug, Serialize, Deserialize, JsonSchema)]
pub struct ExpandedModel {
    pub model: String,
    pub label: String,
    pub description: Option<String>,
    #[serde(default)]
    #[serde_as(deserialize_as = "DefaultOnNull")]
    pub accounts: ExpandAccounts,
    pub read: ExpandRead,
    pub delete: bool,
    pub index: bool,
    pub logged_in: bool,
    pub read_audit: bool,
    pub id: Uuid,
}

fn fetch() {
       // to have this work, I need to convert it to json and then deserialize it
       // else, I get the following error: Query Error: no column found for name: accounts
        let models = query.into_json().all(db).await?;
        let mut data = vec![];
        for model in models {
            data.push(serde_json::from_value(model)?);
        }
}

// what I would like
fn fetch2() {
        let models = query.into_model().all(db).await?
}