Logic app- how to retrieve json data from dynamic property name

Question

Here's my json - Here I want to retrieve json content from "Property - Dynamic content". Where, dynamic content part might vary for every json request. How do I filter this by a dynamic name?

{
  "Attributes": 
  {
    "Property1": {
      "Data1": {
        "Value": "50"
  }
},
"Property2": {
  "Data2": {
    "Value": "50"
  }
},
"Property - Dynamic content": {
  "Data3": {
    "Value": "50"
  },
  "Data4": {
    "Value": "50"
  }
}

} }

Answer 1

I was able to get what I need using inline code - javascript - If anyone else is looking for the same - here it is - This will give json from Property - dynamic content element.

var data = Object.keys(workflowContext.trigger.outputs.body.Attributes);

var key = data.filter(s => s.includes('Property')).toString(); // to get element - Property - dynamic content

return workflowContext.trigger.outputs.body.Attributes[key];

Answer 2

For your requirement, please refer to my logic app below:

1. I initialized a variable and store the json same with yours to simulate your situation.

2. Then use "Parse JSON".

Please notice the schema of "Parse JSON" show as:

{
    "properties": {
        "Attributes": {
            "properties": {
                "Property - Dynamic content": {
                    "type": [
                        "object",
                        "array"
                    ]
                },
                "Property1": {
                    "properties": {
                        "Data1": {
                            "properties": {
                                "Value": {
                                    "type": "string"
                                }
                            },
                            "type": "object"
                        }
                    },
                    "type": "object"
                },
                "Property2": {
                    "properties": {
                        "Data2": {
                            "properties": {
                                "Value": {
                                    "type": "string"
                                }
                            },
                            "type": "object"
                        }
                    },
                    "type": "object"
                }
            },
            "type": "object"
        }
    },
    "type": "object"
}

Please pay attention to the type of Property - Dynamic content in schema above. Since the content of Property - Dynamic content is either "object" or "array", so I set both "object" and "array" as the type of Property - Dynamic content.

3. Then I initialized a variable named "result" to get the value which you want.

As we use both type "object" and "array" in the schema for Property - Dynamic content, so you may not find it in the "Dynamic content" selection. You can input its value by expression as the screenshot above. The whole expression is: body('Parse_JSON')?['Attributes']?['Property - Dynamic content']