Trait pallet_onboarding::Inspect

pub trait Inspect<AccountId> {
    type ItemId;
    type CollectionId;

    fn owner(
        collection: &Self::CollectionId,
        item: &Self::ItemId
    ) -> Option<AccountId>;

    fn collection_owner(_collection: &Self::CollectionId) -> Option<AccountId> { ... }
    fn attribute(
        _collection: &Self::CollectionId,
        _item: &Self::ItemId,
        _key: &[u8]
    ) -> Option<Vec<u8, Global>> { ... }
    fn typed_attribute<K, V>(
        collection: &Self::CollectionId,
        item: &Self::ItemId,
        key: &K
    ) -> Option<V>
    where
        K: Encode,
        V: Decode,
    { ... }
    fn collection_attribute(
        _collection: &Self::CollectionId,
        _key: &[u8]
    ) -> Option<Vec<u8, Global>> { ... }
    fn typed_collection_attribute<K, V>(
        collection: &Self::CollectionId,
        key: &K
    ) -> Option<V>
    where
        K: Encode,
        V: Decode,
    { ... }
    fn can_transfer(
        _collection: &Self::CollectionId,
        _item: &Self::ItemId
    ) -> bool { ... }
}

Trait for providing an interface to many read-only NFT-like sets of items.

Required Associated Types

type ItemId

Type for identifying an item.

type CollectionId

Type for identifying a collection (an identifier for an independent collection of items).

Required Methods

fn owner(
    collection: &Self::CollectionId,
    item: &Self::ItemId
) -> Option<AccountId>

Returns the owner of item of collection, or None if the item doesn’t exist (or somehow has no owner).

Provided Methods

fn collection_owner(_collection: &Self::CollectionId) -> Option<AccountId>

Returns the owner of the collection, if there is one. For many NFTs this may not make any sense, so users of this API should not be surprised to find a collection results in None here.

fn attribute(
    _collection: &Self::CollectionId,
    _item: &Self::ItemId,
    _key: &[u8]
) -> Option<Vec<u8, Global>>

Returns the attribute value of item of collection corresponding to key.

By default this is None; no attributes are defined.

fn typed_attribute<K, V>(
    collection: &Self::CollectionId,
    item: &Self::ItemId,
    key: &K
) -> Option<V>where
    K: Encode,
    V: Decode,

Returns the strongly-typed attribute value of item of collection corresponding to key.

By default this just attempts to use attribute.

fn collection_attribute(
    _collection: &Self::CollectionId,
    _key: &[u8]
) -> Option<Vec<u8, Global>>

Returns the attribute value of collection corresponding to key.

By default this is None; no attributes are defined.

fn typed_collection_attribute<K, V>(
    collection: &Self::CollectionId,
    key: &K
) -> Option<V>where
    K: Encode,
    V: Decode,

Returns the strongly-typed attribute value of collection corresponding to key.

By default this just attempts to use collection_attribute.

fn can_transfer(_collection: &Self::CollectionId, _item: &Self::ItemId) -> bool

Returns true if the item of collection may be transferred.

Default implementation is that all items are transferable.

Implementations on Foreign Types

impl<T> Inspect<<T as Config>::AccountId> for Pallet<T>where
    T: Config,

type ItemId = <T as Config>::NftItemId

type CollectionId = <T as Config>::NftCollectionId

fn owner(
    collection: &<Pallet<T> as Inspect<<T as Config>::AccountId>>::CollectionId,
    item: &<Pallet<T> as Inspect<<T as Config>::AccountId>>::ItemId
) -> Option<<T as Config>::AccountId>

fn collection_owner(
    collection: &<Pallet<T> as Inspect<<T as Config>::AccountId>>::CollectionId
) -> Option<<T as Config>::AccountId>

impl<T, I> Inspect<<T as Config>::AccountId> for Pallet<T, I>where
    T: Config<I>,
    I: 'static,

fn attribute(
    collection: &<Pallet<T, I> as Inspect<<T as Config>::AccountId>>::CollectionId,
    item: &<Pallet<T, I> as Inspect<<T as Config>::AccountId>>::ItemId,
    key: &[u8]
) -> Option<Vec<u8, Global>>

Returns the attribute value of item of collection corresponding to key.

When key is empty, we return the item metadata value.

By default this is None; no attributes are defined.

fn collection_attribute(
    collection: &<Pallet<T, I> as Inspect<<T as Config>::AccountId>>::CollectionId,
    key: &[u8]
) -> Option<Vec<u8, Global>>

Returns the attribute value of item of collection corresponding to key.

When key is empty, we return the item metadata value.

By default this is None; no attributes are defined.

fn can_transfer(
    collection: &<Pallet<T, I> as Inspect<<T as Config>::AccountId>>::CollectionId,
    item: &<Pallet<T, I> as Inspect<<T as Config>::AccountId>>::ItemId
) -> bool

Returns true if the item of collection may be transferred.

Default implementation is that all items are transferable.

type ItemId = <T as Config<I>>::ItemId

type CollectionId = <T as Config<I>>::CollectionId

fn owner(
    collection: &<Pallet<T, I> as Inspect<<T as Config>::AccountId>>::CollectionId,
    item: &<Pallet<T, I> as Inspect<<T as Config>::AccountId>>::ItemId
) -> Option<<T as Config>::AccountId>

fn collection_owner(
    collection: &<Pallet<T, I> as Inspect<<T as Config>::AccountId>>::CollectionId
) -> Option<<T as Config>::AccountId>

Implementors