feat(paperless): add flexible multi-field custom fields mapping

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2026-02-10 15:00:28 +00:00
parent eeb32ac77f
commit 327244c43a
5 changed files with 130 additions and 19 deletions
+8
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@@ -122,6 +122,14 @@ PAPERLESS_NGX_API_TOKEN=<PAPERLESS_API_TOKEN>
# Example: PAPERLESS_CUSTOM_FIELD_ABSENDER=Absender
# PAPERLESS_CUSTOM_FIELD_ABSENDER=
# Optional: JSON mapping of metadata fields to Paperless custom field names
# This allows you to map multiple extracted metadata fields to custom fields in Paperless
# The mapping format is: {"metadata_field_name": "PaperlessCustomFieldName", ...}
# Available metadata fields: absender, empfaenger, correspondent, document_type, language,
# kommunikationsart, kommunikationskategorie, reference_number, etc.
# Example: PAPERLESS_CUSTOM_FIELDS_MAPPING={"absender": "Sender", "empfaenger": "Recipient", "language": "Language", "correspondent": "Correspondent"}
# PAPERLESS_CUSTOM_FIELDS_MAPPING=
# Dropbox
DROPBOX_APP_KEY=<DROPBOX_APP_KEY>
DROPBOX_APP_SECRET=<DROPBOX_APP_SECRET>
+3
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@@ -32,6 +32,9 @@ class Settings(BaseSettings):
paperless_ngx_api_token: Optional[str] = None
paperless_host: Optional[str] = None
paperless_custom_field_absender: Optional[str] = None # Name or ID of the "absender" custom field in Paperless
# JSON mapping of metadata field names to Paperless custom field names
# Example: {"absender": "Sender", "empfaenger": "Recipient", "language": "Language", "correspondent": "Correspondent"}
paperless_custom_fields_mapping: Optional[str] = None
azure_ai_key: str
azure_region: str
+43 -8
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@@ -16,6 +16,7 @@ logger = logging.getLogger(__name__)
POLL_MAX_ATTEMPTS = 10
POLL_INTERVAL_SEC = 3
UNKNOWN_VALUE = "Unknown" # Magic value used to indicate missing metadata
def _get_headers():
@@ -126,7 +127,7 @@ def set_document_custom_fields(doc_id: int, custom_fields: dict, task_id: str) -
# Build custom_fields array for PATCH request
custom_fields_array = []
for field_name, value in custom_fields.items():
if value and value != "Unknown": # Only set non-empty, non-Unknown values
if value and value != UNKNOWN_VALUE: # Only set non-empty, non-Unknown values
try:
field_id = get_custom_field_id(field_name)
custom_fields_array.append({"field": field_id, "value": value})
@@ -244,22 +245,56 @@ def upload_to_paperless(self, file_path: str, file_id: int = None):
)
# Set custom fields if configured and metadata available
if settings.paperless_custom_field_absender and metadata.get("absender"):
logger.info(f"[{task_id}] Setting custom fields for document {doc_id}")
log_task_progress(task_id, "set_custom_fields", "in_progress", "Setting custom fields", file_id=file_id)
custom_fields_to_set = {}
# Prepare custom fields to set
custom_fields_to_set = {}
if settings.paperless_custom_field_absender:
# First, check for the new flexible mapping configuration
if settings.paperless_custom_fields_mapping:
try:
# Parse JSON mapping: {"metadata_field": "PaperlessFieldName", ...}
import json
field_mapping = json.loads(settings.paperless_custom_fields_mapping)
logger.info(f"[{task_id}] Using custom fields mapping: {field_mapping}")
# Map each metadata field to its corresponding Paperless custom field
for metadata_field, paperless_field in field_mapping.items():
if metadata_field in metadata and metadata[metadata_field]:
custom_fields_to_set[paperless_field] = metadata[metadata_field]
logger.debug(
f"[{task_id}] Mapping {metadata_field}='{metadata[metadata_field]}' to field '{paperless_field}'"
)
except json.JSONDecodeError as e:
logger.error(f"[{task_id}] Failed to parse PAPERLESS_CUSTOM_FIELDS_MAPPING: {e}")
except Exception as e:
logger.error(f"[{task_id}] Error processing custom fields mapping: {e}")
# Fallback to legacy single-field configuration for backward compatibility
if settings.paperless_custom_field_absender and metadata.get("absender"):
# Only add if not already set by the mapping
if settings.paperless_custom_field_absender not in custom_fields_to_set:
custom_fields_to_set[settings.paperless_custom_field_absender] = metadata.get("absender")
logger.debug(f"[{task_id}] Using legacy absender field configuration")
# Set custom fields if we have any to set
if custom_fields_to_set:
logger.info(f"[{task_id}] Setting {len(custom_fields_to_set)} custom field(s) for document {doc_id}")
log_task_progress(task_id, "set_custom_fields", "in_progress", "Setting custom fields", file_id=file_id)
try:
set_document_custom_fields(doc_id, custom_fields_to_set, task_id)
log_task_progress(task_id, "set_custom_fields", "success", "Custom fields set", file_id=file_id)
log_task_progress(
task_id,
"set_custom_fields",
"success",
f"Set {len(custom_fields_to_set)} custom field(s)",
file_id=file_id,
)
except Exception as e:
logger.error(f"[{task_id}] Failed to set custom fields: {e}")
log_task_progress(task_id, "set_custom_fields", "failure", f"Failed: {str(e)}", file_id=file_id)
# Don't fail the entire upload if custom fields fail
else:
logger.debug(f"[{task_id}] No custom fields configured or no metadata available")
return {
"status": "Completed",
+39 -5
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@@ -212,11 +212,45 @@ SECURITY_HEADER_CSP_VALUE="default-src 'self'; script-src 'self' https://trusted
### Paperless NGX
| **Variable** | **Description** |
|-----------------------------------|-----------------------------------------------------------------------------------------------------|
| `PAPERLESS_NGX_API_TOKEN` | API token for Paperless NGX. |
| `PAPERLESS_HOST` | Root URL for Paperless NGX (e.g. `https://paperless.example.com`). |
| `PAPERLESS_CUSTOM_FIELD_ABSENDER` | (Optional) Name of the custom field in Paperless-ngx to store the sender ("absender") information. If set, the extracted sender will be automatically set as a custom field after document upload. Example: `Absender` or `Sender` |
| **Variable** | **Description** |
|-------------------------------------|-----------------------------------------------------------------------------------------------------|
| `PAPERLESS_NGX_API_TOKEN` | API token for Paperless NGX. |
| `PAPERLESS_HOST` | Root URL for Paperless NGX (e.g. `https://paperless.example.com`). |
| `PAPERLESS_CUSTOM_FIELD_ABSENDER` | (Optional, Legacy) Name of the custom field in Paperless-ngx to store the sender ("absender") information. If set, the extracted sender will be automatically set as a custom field after document upload. Example: `Absender` or `Sender` |
| `PAPERLESS_CUSTOM_FIELDS_MAPPING` | (Optional, Recommended) JSON mapping of extracted metadata fields to Paperless custom field names. This allows you to map multiple fields at once. Format: `{"metadata_field": "CustomFieldName", ...}`. See examples below. |
#### Custom Fields Mapping Examples
**Single Field (Legacy Method)**:
```bash
PAPERLESS_CUSTOM_FIELD_ABSENDER=Absender
```
**Multiple Fields (Recommended Method)**:
```bash
# Map multiple metadata fields to custom fields in Paperless
PAPERLESS_CUSTOM_FIELDS_MAPPING='{"absender": "Sender", "empfaenger": "Recipient", "language": "Language"}'
```
**All Available Metadata Fields**:
DocuElevate extracts the following fields that can be mapped to Paperless custom fields:
- `absender` - Sender/author of the document
- `empfaenger` - Recipient of the document
- `correspondent` - The issuing entity/company (shortened name)
- `document_type` - Type classification (Invoice, Contract, etc.)
- `language` - Document language (ISO 639-1 code, e.g., "de", "en")
- `kommunikationsart` - Communication type (German classification)
- `kommunikationskategorie` - Communication category (German classification)
- `reference_number` - Invoice/order/reference number if found
- `title` - Human-readable document title
- `tags` - List of thematic keywords (array)
**Complete Example**:
```bash
PAPERLESS_CUSTOM_FIELDS_MAPPING='{"absender": "Sender", "empfaenger": "Recipient", "correspondent": "Correspondent", "language": "Language", "reference_number": "ReferenceNumber"}'
```
**Note**: Custom fields must be created in your Paperless-ngx instance before DocuElevate can use them. The field names in the mapping (right side of the JSON) must exactly match the names in Paperless.
### Dropbox
+37 -6
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@@ -150,13 +150,44 @@ Depending on the system configuration, DocuElevate can perform:
If Paperless-ngx is configured, DocuElevate can automatically upload processed documents and set custom fields with extracted metadata:
1. **Automatic Upload**: After processing, documents are automatically uploaded to Paperless-ngx
2. **Custom Fields**: If configured via `PAPERLESS_CUSTOM_FIELD_ABSENDER`, the sender ("absender") information extracted by AI will be automatically set as a custom field in Paperless
3. **Setup Requirements**:
- Create a custom field in Paperless-ngx (e.g., named "Absender" or "Sender")
- Set the `PAPERLESS_CUSTOM_FIELD_ABSENDER` environment variable to match your custom field name
- Ensure the custom field exists in Paperless before processing documents
2. **Custom Fields Support**: DocuElevate can automatically populate custom fields in Paperless with extracted metadata
3. **Flexible Field Mapping**: Map any extracted metadata field to any custom field in Paperless
**Note**: The custom field feature requires that the field is already created in your Paperless-ngx instance. DocuElevate will look up the field by name and set its value automatically.
#### Setting Up Custom Fields
**Basic Setup (Single Field)**:
```bash
# In your .env file
PAPERLESS_CUSTOM_FIELD_ABSENDER=Absender
```
**Advanced Setup (Multiple Fields)**:
```bash
# Map multiple metadata fields to Paperless custom fields
PAPERLESS_CUSTOM_FIELDS_MAPPING='{"absender": "Sender", "empfaenger": "Recipient", "language": "Language", "correspondent": "Correspondent"}'
```
**Available Metadata Fields**:
- `absender` - Sender/author
- `empfaenger` - Recipient
- `correspondent` - Issuing company (short name)
- `language` - Document language (e.g., "de", "en")
- `document_type` - Classification (Invoice, Contract, etc.)
- `reference_number` - Invoice/order/reference number
- `kommunikationsart` - Communication type
- `kommunikationskategorie` - Communication category
- And more...
**Requirements**:
- Create the custom fields in Paperless-ngx first (Settings → Custom Fields)
- The field names in your configuration must exactly match the names in Paperless
- Ensure `PAPERLESS_HOST` and `PAPERLESS_NGX_API_TOKEN` are configured
**How It Works**:
1. DocuElevate extracts metadata from your documents using AI
2. The document is uploaded to Paperless-ngx
3. After successful upload, custom fields are automatically populated
4. You can view the populated fields in your Paperless-ngx document details
## API Access