def _flatten_dictionary(self, params, parent=None):
"""
Flatten a hierarchical dictionary into a simple dictionary.
>>> self._flatten_dictionary({
"test": {
"foo": 12,
"bar": "hello",
},
"baz": False
})
{
"test[foo]": 12,
"test[bar]": hello,
"baz": False
}
"""
data = OrderedDict()
for key, val in params.items():
full_key = parent + "[" + key + "]" if parent else key
if isinstance(val, dict):
data.update(self._flatten_dictionary(val, full_key))
else:
data[full_key] = val
return data
def _flatten_errors(self, params, parent=None):
"""
A modified version of the flatten_dictionary method above used
to coerce the structure holding errors returned by Braintree into
a flattened dictionary where the keys are the names of the fields
and the values the error messages, which can be directly used to
set the field errors on the Django form object for display in
templates.
"""
data = OrderedDict()
for key, val in params.items():
full_key = parent + "[" + key + "]" if parent else key
if full_key.endswith("[errors]"):
full_key = full_key[:-len("[errors]")]
if isinstance(val, dict):
data.update(self._flatten_errors(val, full_key))
elif key == "errors":
for error in val:
data[full_key + "[" + error["attribute"] + "]"] = [error["message"]]
else:
data[full_key] = [val]
return data
