QGIS/resources/function_help/json/attributes

{
  "name": "attributes",
  "type": "function",
  "groups": ["Record and Attributes"],
  "description": "Returns a map containing all attributes from a feature, with field names as map keys.",
  "variants": [{
    "variant": "Variant 1",
    "variant_description": "Returns a map of all attributes from the current feature.",
    "examples": [{
      "expression": "attributes()['name']",
      "returns": "value stored in 'name' attribute for the current feature"
    }]
  }, {
    "variant": "Variant 2",
    "variant_description": "Allows the target feature to be specified.",
    "arguments": [{
      "arg": "feature",
      "description": "a feature"
    }],
    "examples": [{
      "expression": "attributes( @atlas_feature )['name']",
      "returns": "value stored in 'name' attribute for the current atlas feature"
    }]
  }],
  "tags": ["attributes", "names", "field", "keys", "containing", "map"]
}