def field_path(*field_names):
"""Create a **field path** from a list of nested field names.
A **field path** is a ``.``-delimited concatenation of the field
names. It is used to represent a nested field. For example,
in the data
.. code-block:: python
data = {
'aa': {
'bb': {
'cc': 10,
},
},
}
the field path ``'aa.bb.cc'`` represents the data stored in
``data['aa']['bb']['cc']``.
Args:
field_names (Tuple[str, ...]): The list of field names.
Returns:
str: The ``.``-delimited field path.
"""
return render_field_path(field_names)
def _call_fut(field_names):
from google.cloud.firestore_v1beta1 import field_path
return field_path.render_field_path(field_names)