Power Automate - Query String helper

In the world of Power Platform projects, I recently encountered a challenge involving query string operations and dependencies. Specifically, I needed to check and retrieve query string values within Power Automate. However, I discovered that Power Automate lacks out-of-the-box functions to handle these tasks directly.

To address this gap, I developed a child flow designed to check and retrieve query string values. This child flow can be seamlessly integrated into other flows or canvas apps, providing a versatile and reusable solution.

Key Features of the Child Flow:

Input Parameters:

• Full URL: The complete URL containing the query string.
• Query String Parameter Key: The specific key of the query string parameter you want to retrieve.

The flow does some string manipulation to extract the query string value.

Response Mechanism:

• If the specified query string parameter key is found, the flow returns the corresponding value along with a 200 response code.
• If the key is not found, the flow returns a 400 response code.

This custom solution simplifies the process of handling query string values in Power Automate, enabling more efficient and dynamic workflows.

How to Use the Child Flow:

1. Integration with Flows: You can call this child flow from within any existing flow, making it a powerful tool for various automation scenarios.
2. Integration with Canvas Apps: It can also be invoked from canvas apps, providing additional flexibility for app developers.

By leveraging this child flow, you can enhance the capabilities of your Power Automate projects, making query string operations straightforward and effective.

I hope this solution proves helpful to others working on similar challenges in the Power Platform ecosystem. Here is the flow for reference. Feel free to reach out if you have any questions or need further assistance with implementation!