def apply_simple_config(log: ProcessLogger, document_field: DocumentField,
csv: bytes, drop_previous_field_detectors: bool,
update_field_choice_values: bool):
df = pd.read_csv(io.BytesIO(csv), dtype=str)
if df.shape[0] < 1 or df.shape[1] < 1:
raise ValueError('Config csv contains no data')
row_num = df.shape[0]
if update_field_choice_values:
choices = df[
df.columns[0]].dropna().drop_duplicates().sort_values().tolist()
document_field.choices = '\n'.join(choices)
document_field.save()
log.info(
'Creating {2} naive field detectors for document field {0} and document type {1}...'
.format(document_field, document_field.document_type, df.shape[0]))
log.set_progress_steps_number(int(row_num / 10) + 1)
if drop_previous_field_detectors:
DocumentFieldDetector.objects.filter(
field=document_field,
category=FD_CATEGORY_IMPORTED_SIMPLE_CONFIG).delete()
for index, row in df.iterrows():
detector = DocumentFieldDetector()
detector.category = FD_CATEGORY_IMPORTED_SIMPLE_CONFIG
detector.field = document_field
detector.regexps_pre_process_lower = True
detector.detected_value = row[0]
detector.include_regexps = '\n'.join(row.dropna()).lower()
detector.save()
if index % 10 == 0:
log.step_progress()
log.info('Done.')
def make_doc_field_detector(exclude_regexps: Optional[str] = None,
include_regexps: Optional[str] = None,
detected_value: Optional[str] = None,
regexps_pre_process_lower: bool = True,
definition_words: Optional[str] = None) -> DocumentFieldDetector:
detector = DocumentFieldDetector()
detector.exclude_regexps = exclude_regexps if exclude_regexps is not None else 'cushion'
detector.include_regexps = include_regexps if include_regexps is not None else r'(?<=\D{3,3}\s\D{5,5}\s)\D+'
if detected_value is not None:
detector.detected_value = detected_value
detector.extraction_hint = 'TAKE_FIRST' # 'detected'
detector.text_part = 'INSIDE_REGEXP'
detector.regexps_pre_process_lower = regexps_pre_process_lower
detector.definition_words = definition_words
return detector
def save_detector_settings(
self, detectors_by_value: Dict[str, List[str]]) -> None:
# save [all pattern: value] records into DocumentFieldMultilineRegexDetector
if self.save_in_csv_format:
self.save_detector_settings_csv(detectors_by_value)
return
# save patterns as one or more DocumentFieldDetector records
# but before (optionally) delete old settings
if self.drop_previous_field_detectors:
DocumentFieldDetector.objects.filter(
field=self.document_field,
category=self.FD_CATEGORY_IMPORTED_SIMPLE_CONFIG).delete()
for field_val in detectors_by_value:
include_reg_values = detectors_by_value[field_val]
detector = DocumentFieldDetector()
detector.category = self.FD_CATEGORY_IMPORTED_SIMPLE_CONFIG
detector.field = self.document_field
detector.regexps_pre_process_lower = True
detector.detected_value = field_val
detector.include_regexps = '\n'.join(include_reg_values)
detector.save()