Metamask: Unable to add transaction to blockchain (I’m invoking the setMessage(str) method but the string i pass doesn’t get set but getMessage() method works)

Metamask: Failed to add transaction to blockchain despite successful message setup

As a developer, it is frustrating when you fail to perform a seemingly simple action and then discover that there is a logical flaw in your code. In this article, we will dive deeper into Metamask and its interaction with the messaging system.

The Problem: Setting a Message via Remix IDE

When working on your Remix project, you can set a message using the setMessage(str) function. This method is used to store data that will be displayed in the blockchain explorer or other places where messages are shown. The problem arises when trying to use this functionality with Metamask.

Problem: Failed to add transaction despite successful message setup

When we call the setMessage() function, we expect it to record a transaction on the blockchain. However, surprisingly, no error messages are displayed in the blockchain explorer or other places where messages are shown. Additionally, when we try to retrieve the message using the getMessage() method, we find that no value is returned.

Connecting: Remix IDE and Metamask

To better understand this issue, let’s explore how Remix works with Metamask. In a Remix project, you can use the setMessage(str) function to set the data for the blockchain explorer or other places where messages are displayed. However, when using Metamask to interact with the blockchain, the messaging setup functionality seems to work differently.

Debugging and Troubleshooting

To fix this issue, we’ll follow these steps:

• Check the Remix console output: In your Remix project, go to the “console” tab in Remix Studio (the IDE for Remix) or use the command line to check for Metamask errors.

• Examine the setMessage() and getMessage() methods: Look at the code for both functions in the Metamask JavaScript module. Check if there are any differences between the two methods, such as asynchronous behavior or error handling.

• Test different messages: Try setting different message types (e.g. strings, numbers) to see if they impact the setMessage() and getMessage() functionality.

Conclusion

The issue is not related to the underlying blockchain technology, but rather to how Metamask interacts with the messaging system in Remix. Despite setting a message using the setMessage() function, no error message or transaction log is displayed when using Metamask to interact with the blockchain.

To resolve this issue, you will need to examine the code for the setMessage() and getMessage() functions and verify that they work as expected. Also, try different messages to determine if a specific data type is causing the issue.

Sample Code

Here is an example of how you can use the setMessage() function in your Remix project:

import {Message} from "web3";
const message = "Hello, world!"; // string
// Set the message using the setMessage function
message.set();

And here is a sample code snippet to set a message using the getMessage() method:

import {Message} from "web3";
import { RemixContract } from "./RemixContract";
const contract = new RemixContract();
contract.setMessage(message); // string

In this example, we define a message variable as a string and use the setMessage() function to set it. We then call the getMessage() method to retrieve the value.

By following these steps and checking the differences between the setMessage() and getMessage() functions in the JavaScript Metamask module, you should be able to diagnose and resolve this issue.

ethereum extent influenced data