When creating APIs on Blockflow, you define the logic that handles incoming requests, interacts with databases, and generates appropriate responses using TypeScript. Before you start coding, it's essential to understand the following concepts:
Context
Database Interactions
Secrets
Available Libraries
The context
variable is injected into the API handler function and provides access to the incoming request and the outgoing response.
Request: The request
object within the context
allows you to access query parameters passed when calling the API. For example:
This variable gives your access to query parameters you passed while calling APIs.
This code retrieves the value of the user
query parameter from the API request.
Response: The response
object within the context
is used to generate the API response that will be returned to the client. You can assign values to the response
object and return it at the end of the handler function.
For example:
Your API response will look like:-
Blockflow provides a seamless way to interact with your managed databases within your API logic. To learn how to read from and write to your databases, refer to this guide.
Secrets allow you to securely store and access sensitive information, such as API keys or private keys, without hardcoding them in your API logic. You can access secrets using the secret
variable.
For example:
To manage your secrets, use Blockflow's Secret Manager. Refer to this guide for more information.
Blockflow provides several pre-imported libraries that you can use in your API logic:
Ethers.js: A popular Ethereum library for interacting with the Ethereum blockchain and smart contracts.
Example usage:
BigNumber.js: A library for handling large numbers and performing arithmetic operations.
Example usage:
PushUtils: A utility library provided by Blockflow for interacting with the Push API.
Example usage:
Now that you understand the key concepts, you can start writing your API logic. Here's a basic template to get you started:
In the handler
function, you can access the request
and response
objects from the context
, interact with databases using the bind
function, and generate the appropriate response.
Remember to handle errors appropriately and return meaningful responses to the client.
Writing API logic on Blockflow using TypeScript provides a powerful and flexible way to define the behavior of your APIs. By leveraging the context
object, database interactions, secrets, and available libraries, you can create robust and efficient APIs that meet your application's requirements.
Happy building with Blockflow APIs!
You can check out the library .
You can check out the library .
You can check out the library .
If you have any further questions or need assistance with writing API logic on Blockflow, please reach out to our support team via .