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Overview

Does GhostGraph support state calls?​

Yes, please view the state calls for instructions.

Hint: It's the same as what you would do when writing your smart contracts.

If I want to have a global state of the app, how would I go about it?​

It's very straightforward. You can create a new struct called Global (or any name you prefer) like this:

struct Global {
    string id;
    uint256 totalMints;
}

Then, in your indexer.sol, whenever you want to access your global state, you can do something like this. Note that the "1" is arbitrary.

Global memory global = graph.getGlobal("1");
global.totalMints += 1;
graph.saveGlobal(global);

My event object does not have a unique id, what do I do?​

There are a few ways to handle this situation:

  • First, you can concatenate fields to create a deterministic unique id.
  • Second, if you don't need to refer to the struct in the future, you can use our helper function details.uniqueId(); which creates a unique id based on the block number and log index.