To filter data from a RESTful API, you typically utilize query parameters in your API request. Query parameters allow you to specify criteria for filtering the data you receive from the API. Here’s an example of how you can filter data using query parameters: 1. Determine the API endpoint: Identify the specific endpoint URL for the data you want to retrieve. For example: `https://api.example.com/users`. 2. Add query parameters: Append query parameters to the endpoint URL using the `?` character followed by the parameter name and value pairs. For example: `https://api.example.com/users?status=active&role=admin`. 3. Specify filter criteria: Determine the specific filters you want to apply. In the example above, we’re filtering users based on their status being “active” and their role being “admin”. 4. Make the API request: Use your preferred programming language or tool to make an HTTP GET request to the API endpoint with the appended query parameters. Here’s an example using Python and the `requests` library:
python
import requests
url = 'https://api.example.com/users'
params = {'status': 'active', 'role': 'admin'}
response = requests.get(url, params=params)
if response.status_code == 200:
data = response.json()
# Process the filtered data
else:
print('Error:', response.status_code)
5. Process the filtered data: Once you receive the API response, you can process the filtered data according to your application’s needs. Remember to consult the API documentation for the specific API you’re working with to understand the available filter parameters and their usage.