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Nfts attribute read interface (#13349)

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* feat: add custom and system attributes to Inspect

* feat: add nfts runtime api

* fix: pass std feature to runtime api

* fix: api copyright

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

---------

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
This commit is contained in:
Daniel Shiposha
2023-02-23 15:06:12 +00:00
committed by GitHub
parent 2568c6d48b
commit 4af011f418
10 changed files with 291 additions and 30 deletions
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substrate/frame/nfts/src/impl_nonfungibles.rs
+31 -1
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@@ -50,18 +50,48 @@ impl<T: Config<I>, I: 'static> Inspect<<T as SystemConfig>::AccountId> for Palle
fn attribute(
collection: &Self::CollectionId,
item: &Self::ItemId,
namespace: &AttributeNamespace<<T as SystemConfig>::AccountId>,
key: &[u8],
) -> Option<Vec<u8>> {
if key.is_empty() {
// We make the empty key map to the item metadata value.
ItemMetadataOf::<T, I>::get(collection, item).map(|m| m.data.into())
} else {
let namespace = AttributeNamespace::CollectionOwner;
let key = BoundedSlice::<_, _>::try_from(key).ok()?;
Attribute::<T, I>::get((collection, Some(item), namespace, key)).map(|a| a.0.into())
}
}
/// Returns the custom attribute value of `item` of `collection` corresponding to `key`.
///
/// By default this is `None`; no attributes are defined.
fn custom_attribute(
account: &T::AccountId,
collection: &Self::CollectionId,
item: &Self::ItemId,
key: &[u8],
) -> Option<Vec<u8>> {
let namespace = Account::<T, I>::get((account, collection, item))
.map(|_| AttributeNamespace::ItemOwner)
.unwrap_or_else(|| AttributeNamespace::Account(account.clone()));
let key = BoundedSlice::<_, _>::try_from(key).ok()?;
Attribute::<T, I>::get((collection, Some(item), namespace, key)).map(|a| a.0.into())
}
/// Returns the system attribute value of `item` of `collection` corresponding to `key`.
///
/// By default this is `None`; no attributes are defined.
fn system_attribute(
collection: &Self::CollectionId,
item: &Self::ItemId,
key: &[u8],
) -> Option<Vec<u8>> {
let namespace = AttributeNamespace::Pallet;
let key = BoundedSlice::<_, _>::try_from(key).ok()?;
Attribute::<T, I>::get((collection, Some(item), namespace, key)).map(|a| a.0.into())
}
/// Returns the attribute value of `item` of `collection` corresponding to `key`.
///
/// When `key` is empty, we return the item metadata value.