Flatten Fields Processor - Mezmo Docs

Description

This processor recursively reduces the level of a set of objects and appends the prior level to the keys of each.

Use

The flatten processor is useful when you need all nested fields of a JSON object to be moved to a single level. This can be beneficial when integrating with a system that can’t handle complex or nested data.

Configuration

There are two options for configuring this processor.

Option	Description	Example
Fields	The field or fields to flatten.	`.foo`
Flatten Options	Specify the delimiter to use for combining field names with the flattened data.	_

Example

Before

{
  "foo": {
    "bar": {
      "baz": 1,
      "qux": "quux"
    },
    "core": [
      1,
      2,
      3
    ]
  }
}

Flatten Options

Option	Value
Field	.`foo`
Delimiter	_

{
  "foo_bar_baz": 1,
  "foo_bar_qux": "quux",
  "foo_core": [
    1,
    2,
    3
  ]
}