# Error \`No method named "push" found for type "StorageVec\".\` during usage of nested StorageVec inside a StorageMap **URL:** \ **Category:** Sway\ **Created:** [October 4, 2023, 2:29pm UTC](https://forum.fuel.network/t/error-no-method-named-push-found-for-type-storagevec-u64-during-usage-of-nested-storagevec-inside-a-storagemap/3132 "2023-10-04T14:29:06Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\ **Post date:** [October 4, 2023, 2:29pm UTC](https://forum.fuel.network/t/error-no-method-named-push-found-for-type-storagevec-u64-during-usage-of-nested-storagevec-inside-a-storagemap/3132/1 "2023-10-04T14:29:06Z")
# Error `No method named "push" found for type "StorageVec".` during usage of nested StorageVec inside a StorageMap Hello friends ✨ We are in the process of building our perps and have been faced with a strange problem: I’m trying to store a storage list of opened orders for each user (to make `cancel_all` func) We are having the next storage item ` orders_by_owner: StorageMap> = StorageMap {},` but during the build, I got the next error in editing of the orders list place ```rs let mut orders_by_owner = storage.orders_by_owner.get(owner).read(); orders_by_owner.push(id); //^^^^ No method named "push" found for type "StorageVec". storage.orders_by_owner.insert(owner, orders_by_owner); ``` Here I created a simple contract to show that error in the simplest way: > **[GitHub - chlenc/nested-storage-vec-example](https://github.com/chlenc/nested-storage-vec-example)** > > Contribute to chlenc/nested-storage-vec-example development by creating an account on GitHub. ```rs contract; use std::hash::*; use std::storage::storage_vec::*; storage{ v: StorageMap> = StorageMap {}, } abi MyContract { #[storage(read, write)] fn test_function(n: u64); } impl MyContract for Contract { #[storage(read, write)] fn test_function(n: u64) { let address = msg_sender_address(); let mut v = storage.v.get(address).read(); v.push(n); //error No method named "push" found for type "StorageVec". storage.v.insert(address, v); } } pub fn msg_sender_address() -> Address { match std::auth::msg_sender().unwrap() { Identity::Address(identity) => identity, _ => revert(0), } } ``` ## How to reproduce? ```auto git clone https://github.com/chlenc/nested-storage-vec-example.git cd nested-storage-vec-example forc build ``` ## toolchain ```auto Default host: aarch64-apple-darwin fuelup home: /Users/alexey/.fuelup installed toolchains -------------------- beta-3-aarch64-apple-darwin beta-4-rc.2-aarch64-apple-darwin latest-aarch64-apple-darwin (default) beta-4-aarch64-apple-darwin hotfix my-custom-toolchain active toolchain ----------------- latest-aarch64-apple-darwin (default) forc : 0.46.0 - forc-client - forc-deploy : 0.46.0 - forc-run : 0.46.0 - forc-doc : 0.46.0 - forc-explore : 0.28.1 - forc-fmt : 0.46.0 - forc-index : 0.21.0 - forc-lsp : 0.46.0 - forc-tx : 0.46.0 - forc-wallet : 0.3.0 fuel-core : 0.20.5 fuel-core-keygen : Error getting version string fuel-indexer : 0.21.0 fuels versions --------------- forc : 0.45 forc-wallet : 0.45 ``` ---
**Author:** ![calldelegation](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/calldelegation/32/1484_2.png) [@calldelegation](https://forum.fuel.network/u/calldelegation)\ **Post date:** [October 4, 2023, 3:55pm UTC](https://forum.fuel.network/t/error-no-method-named-push-found-for-type-storagevec-u64-during-usage-of-nested-storagevec-inside-a-storagemap/3132/2 "2023-10-04T15:55:03Z")
Hey @fuel thanks for using the forum! Your problem is on this line: `let mut v = storage.v.get(address).read();` 1. Your `.get()` returns type `StorageKey` 2. So when you do a `.read()`after it is loading in an **empty struct** because you’ve defined it as `StorageMap {}` previously 3. Since the `StorageMap` keeps the storage in place there is no need to insert again either the updated example would look like this ```auto impl MyContract for Contract { #[storage(read, write)] fn test_function(n: u64) { let address = msg_sender_address(); let mut v = storage.v.get(address); v.push(n); } } ``` @bitzoic wrote a more comprehensive example here ```auto contract; use std::{storage::storage_vec::*, auth::msg_sender, hash::Hash}; storage { my_map: StorageMap> = StorageMap {}, } abi MyContract { #[storage(read, write)] fn test_function() -> bool; } impl MyContract for Contract { #[storage(read, write)] fn test_function() -> bool { // Setup and initalize storage let sender = msg_sender().unwrap(); storage.my_map.insert(sender, StorageVec{}); // Method 1 let key_of_vec: StorageKey> = storage.my_map.get(sender); key_of_vec.push(4); // Method 2 storage.my_map.get(sender).push(7); // Make sure that 4 is at index 0 and 7 at index 1 assert(key_of_vec.get(0).unwrap().read() == 4); assert(storage.my_map.get(sender).get(1).unwrap().read() == 7); true } } #[test] fn test_example() { let contract_abi = abi(MyContract, CONTRACT_ID); let _ = contract_abi.test_function(); } ``` Hope this helps! ---
**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\ **Post date:** [October 4, 2023, 5:40pm UTC](https://forum.fuel.network/t/error-no-method-named-push-found-for-type-storagevec-u64-during-usage-of-nested-storagevec-inside-a-storagemap/3132/3 "2023-10-04T17:40:47Z")
Oh, Nice!!! I can do that even better using ```auto // Method 2 storage.my_map.get(sender).push(7); ``` @calldelegation @bitzoic Thank you guys ❤ ---
**Author:** ![system](https://us1.discourse-cdn.com/flex022/uploads/fuel/original/2X/5/57d5a345cc15a64b636e0d56e042857f8a0e80b1.png) [@system](https://forum.fuel.network/u/system)\ **Post date:** [October 25, 2023, 1:41pm UTC](https://forum.fuel.network/t/error-no-method-named-push-found-for-type-storagevec-u64-during-usage-of-nested-storagevec-inside-a-storagemap/3132/4 "2023-10-25T13:41:09Z")
This topic was automatically closed 20 days after the last reply. New replies are no longer allowed.