我在 Django 中对文本字段表单字段进行了子类化,以便为字段创建我自己的自定义小部件。我想知道是否可以检查表单的所有其他字段是否有效(我希望其服务器端行为根据其他字段的验证而有所不同)
见评论
就像是:
class CustomField(TextInput):
def __init__(self, *args, **kwargs):
...
super(CustomField, self).__init__(*args, **kwargs)
input_type = 'hidden'
def value_from_datadict(self, data, files, name):
aws_file_key = data.get(name, None)
_media_bucket = boto.connect_s3(settings.AWS_ACCESS_KEY_ID,
settings.AWS_SECRET_ACCESS_KEY)\
.lookup(settings.AWS_MEDIA_STORAGE_BUCKET_NAME)
try:
key = _media_bucket.get_key(aws_file_key)
except:
print 'Failed to get key.'
key = None
if key and aws_file_key:
fh = tempfile.TemporaryFile()
key.get_contents_to_file(fh)
fh.seek(0)
files = SimpleUploadedFile(key.name, fh.read())
### IF FORM IS VALID DELETE KEY, OTHERWISE, KEEP IT.
if code_to_check_if_valid:
_media_bucket.delete_key(key)
fh.close()
return files
...... etc.