How is struct data stored in blockchain?

Question

I have written a simple blog post contract in solidity.

contract  Blog {
    uint256 counter ;
    struct BlogPost {
        uint256 id;
        string title;
        string content;
        address user;
    }
    BlogPost[] public posts;
function createPost(string calldata _title, string calldata _content) external {
    counter+=1;
    BlogPost memory newPost;
    newPost.id=counter;
    newPost.title=_title;
    newPost.content=_content;
    newPost.user=msg.sender;
    posts.push(newPost);
}

}

I have deployed my contract on a localnode. I have a few questions on what's happening here:

When I deploy the contract, how and what is getting stored on the blockchain?
When I call the createPost() function, where is the array of structs(BlogPost struct) getting stored on the blockchain? Is it stored on a single block or shared between mulitple blocks?
When I call the createPost() function, what happens on the blockchain?

here is all you need to know : https://github.com/ethereumbook/ethereumbook/blob/develop/13evm.asciidoc and it's a possible re asking of : https://ethereum.stackexchange.com/questions/23351/how-contract-data-is-stored-in-blockchain — Torof, Nov 23 '22 at 10:45
yah i checked that question, but it wasn't as intuitive as mine — Bhargav, Nov 23 '22 at 10:48
Like I said, you have all the answers to your question in the EVM part of the ethereum_book — Torof, Nov 23 '22 at 10:53

score -1 · Answer 1 · answered Nov 23 '22 at 18:24

There is that very useful article: https://jeancvllr.medium.com/solidity-tutorial-all-about-structs-b3e7ca398b1e

And you can also use the debugger on remix to see what's happening to the storage of your smart contract when you call 'createPost()'.

Hope this helps!

How is struct data stored in blockchain?

1 Answers1