Flow•12mo ago

joshua | Flow (2024-01-02)

In Cadence 1.0, how do I get a storage capability that is typed as the type that I set it as? details in 🧵

8 Replies

Needle•12mo ago

I've created a thread for your message. Please continue any relevant discussion in this thread. You can rename this thread using /title <new title> If this is a technical question that others may benefit from, considering also asking it on Stackoverflow: https://stackoverflow.com/questions/ask?tags=onflow-cadence

joshuaOP•12mo ago

in one transaction, I issued a storage capability:

        let tokenManagerCapability = sharedAccount
            .capabilities.storage.issue<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>(
                LockedTokens.LockedTokenManagerStoragePath)

        let tokenManagerCapability = sharedAccount
            .capabilities.storage.issue<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>(
                LockedTokens.LockedTokenManagerStoragePath)

then in a different transaction, I am trying to get that capability from storage as the type

Capability<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>

Capability<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>

so I get the controller for it and get the capability from the controller:

        let tokenManagerCapabilityController = signer.capabilities.storage.getControllers(forPath: LockedTokens.LockedTokenManagerStoragePath)[0]!
        let tokenManagerCapability = tokenManagerCapabilityController.capability

        let tokenManagerCapabilityController = signer.capabilities.storage.getControllers(forPath: LockedTokens.LockedTokenManagerStoragePath)[0]!
        let tokenManagerCapability = tokenManagerCapabilityController.capability

but the type of the capability is just Capability I need it to be a capability of the type that I issued it as. I can get that type from the controller and I can get the Capability, but I don't know how to combine them

Unknown User•12mo ago

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joshuaOP•12mo ago

they are the same signer @sainati | Cadence Do you know? Or do you need more clarification?

Unknown User•12mo ago

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joshuaOP•12mo ago

what is the syntax there?

let tokenManagerCapability = tokenManagerCapabilityController.capability as Capability<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>

let tokenManagerCapability = tokenManagerCapabilityController.capability as Capability<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>

Is that correct? I tried that and still got an error

error: mismatched types
                              --> 7f4a4e497420d88303fad3865d0a37d3be56ea0a1645b4e91d6a52f9dd8581d3:26:37
                               |
                            26 |         let tokenManagerCapability = tokenManagerCapabilityController.capability as Capability<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>
                               |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Capability<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>`, got `Capability`

error: mismatched types
                              --> 7f4a4e497420d88303fad3865d0a37d3be56ea0a1645b4e91d6a52f9dd8581d3:26:37
                               |
                            26 |         let tokenManagerCapability = tokenManagerCapabilityController.capability as Capability<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>
                               |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Capability<auth(FungibleToken.Withdrawable) &LockedTokens.LockedTokenManager>`, got `Capability`

Unknown User•12mo ago

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joshuaOP•12mo ago

okay, that looks like it worked. Thank you!

Gaming

Programming

joshua | Flow (2024-01-02)