I need to build the Body dynamically within the HTTP Request to use the PATCH method.

Question

I need to build the Body dynamically within the HTTP Request to use the PATCH method. Does anyone have any suggestions? For example. If "var1" or "var2" is equal to null. This does not enter the construction of the Body. The goal is to update only the fields that are informed of the values ​​to update. ![73377-2021-03-02-125121.jpg][1] [1]: /api/attachments/73377-2021-03-02-125121.jpg?platform=QnA

Answer 1

Hi @MktngAtmtnCnsltnt ,

Welcome to MS QnA, and thank you for posting here!

I'd like to suggest using Conditional to check against null values and build the request dynamically according to your requirements: Create conditional statements that control workflow actions in Azure Logic Apps

Another approach is to execute the same logic in Javascript: Add and run code snippets by using inline code in Azure Logic Apps

Lastly, here's an example of how it can be done: https://learn.microsoft.com/answers/answers/46005/view.html

Answer 2

use Newtonsoft json

JsonSerializer _jsonWriter = new JsonSerializer {
NullValueHandling = NullValueHandling.Ignore
};

or you can use like:
[JsonProperty(NullValueHandling=NullValueHandling.Ignore)]
// or
[JsonProperty("property_name", NullValueHandling=NullValueHandling.Ignore)]

// or for all properties in a class
[JsonObject(ItemNullValueHandling = NullValueHandling.Ignore)]

https://stackoverflow.com/questions/6507889/how-to-ignore-a-property-in-class-if-null-using-json-net