Is it possible to store Struct in Storage

[mahesh_d_luffy]

Hi @danielbate @Nazeeh21 , I am currently facing an issue with struct storage

Contract :

contract;
 
pub struct Point {
    question_id :u64,
    yesnftCount: u64,
    nonftCount: u64,
    question: str,
    starttime : u64,
    endtime : u64
}

storage {
    counter: u64 = 0,
    question_info: StorageMap<(u64,Point)> = StorageMap{},
}
  
abi MyContract {
    #[storage(read, write)]
    fn add_question(question_id: b256, question_info: Point);

     #[storage(read)]
    fn get_question(question_id: str) -> Option<Point>;
    
}
 
impl MyContract for Contract {

    #[storage(read, write)]
    fn add_question(question_id : b256 , question_info : Point){
        let incremented : u64 = storage.counter.read() + 1;
        storage.counter.write(incremented);
        // storage.question_info.write(question_id, _question_info);
    }

    #[storage(read)]
    fn get_question(question_id: str) -> Option<Point> {
        storage.question_info.get(question_id)
    }
}
 

Blocker That I’m Facing

I am trying to store Struct details in the struct , how can i store it ?

Fuelup show :

[p.s]

Hey @mahesh_d_luffy

You can indeed store a Struct in a storage map.

Your declaration of the StorageMap looks a little off though, as it requires a key/value pair like StorageMap<Key, Value> (see the docs for more information).

The following builds successfully for me on v0.62.0 of forc.

contract;

use std::hash::Hash;

pub struct Point {
    question_id :u64,
    yesnftCount: u64,
    nonftCount: u64,
    // question: str,
    starttime : u64,
    endtime : u64
}

storage {
    counter: u64 = 0,
    question_info: StorageMap<b256, Point> = StorageMap::<b256, Point>{},
}

abi MyContract {
    #[storage(read, write)]
    fn add_question(question_id: b256, question_info: Point);

     #[storage(read)]
    fn get_question(question_id: b256) -> Point;

}

impl MyContract for Contract {

    #[storage(read, write)]
    fn add_question(question_id: b256, question_info : Point){
        let incremented : u64 = storage.counter.read() + 1;
        storage.counter.write(incremented);
        storage.question_info.insert(question_id, question_info);
    }

    #[storage(read)]
    fn get_question(question_id: b256) -> Point {
        storage.question_info.get(question_id).read()
    }
}

[mahesh_d_luffy]

Hi @p.s , I understood , how can we add String type in the struct , I want to store question on it ,

is there any other alternate way to store a question (string) type in it.

Thanks in advance .

[p.s]

Hey

I believe you could use a StorageString for this - read more in our docs.

Hope this helps