Origin must be Signed and must conform to the namespace ruleset:
CollectionOwner namespace could be modified by the collection Admin only;
ItemOwner namespace could be modified by the maybe_item owner only. maybe_item
should be set in that case;
Account(AccountId) namespace could be modified only when the origin was given a
permission to do so;
The funds of origin are reserved according to the formula:
AttributeDepositBase + DepositPerByte * (key.len + value.len) taking into
account any already reserved funds.
collection: The identifier of the collection whose item's metadata to set.
maybe_item: The identifier of the item whose metadata to set.
Set an attribute for a collection or item.
Origin must be Signed and must conform to the namespace ruleset:
CollectionOwner
namespace could be modified by thecollection
Admin only;ItemOwner
namespace could be modified by themaybe_item
owner only.maybe_item
should be set in that case;Account(AccountId)
namespace could be modified only when theorigin
was given a permission to do so;The funds of
origin
are reserved according to the formula:AttributeDepositBase + DepositPerByte * (key.len + value.len)
taking into account any already reserved funds.collection
: The identifier of the collection whose item's metadata to set.maybe_item
: The identifier of the item whose metadata to set.namespace
: Attribute's namespace.key
: The key of the attribute.value
: The value to which to set the attribute.Emits
AttributeSet
.Weight:
O(1)