def record_file_preview(
record: RecordItem = None,
pid_value: str = None,
pid_type: str = "recid",
file_metadata: FileItem = None,
is_preview: bool = False,
**kwargs,
):
"""Render a preview of the specified file."""
file_previewer = file_metadata.data.get("previewer")
url = url_for(
"invenio_records_lom.record_file_download",
pid_value=pid_value,
filename=file_metadata.data["key"],
preview=1 if is_preview else 0,
)
# find a suitable previewer
file_obj = PreviewFile(file_metadata, pid_value, url)
for plugin in current_previewer.iter_previewers(
previewers=[file_previewer] if file_previewer else None
):
if plugin.can_preview(file_obj):
return plugin.preview(file_obj)
return default.preview(file_obj)
def _try_previewers(pid, record, filename, preview_file_class=PreviewFile,
previewer=None, **kwargs):
"""Try previewing file with all available previewers."""
# Get file from record
fileobj = current_previewer.record_file_factory(pid, record, filename)
if not fileobj:
abort(404)
# Try to see if specific previewer is requested?
file_previewer = previewer or fileobj.get('previewer')
fileobj = preview_file_class(pid, record, fileobj)
# Try out available previewers
for plugin in current_previewer.iter_previewers(
previewers=[file_previewer] if file_previewer else None):
if plugin.can_preview(fileobj):
try:
return plugin.preview(fileobj)
except Exception:
current_app.logger.warning(
('Preview failed for {key}, in {pid_type}:{pid_value}'
.format(key=fileobj.file.key,
pid_type=fileobj.pid.pid_type,
pid_value=fileobj.pid.pid_value)),
exc_info=True)
return default.preview(fileobj)
def record_file_preview(
record=None,
pid_value=None,
pid_type="recid",
file_metadata=None,
is_preview=False,
**kwargs
):
"""Render a preview of the specified file."""
# Try to see if specific previewer is set
# TODO: what's the analog of: file_previewer = fileobj.get("previewer") ?
file_previewer = file_metadata.data.get("previewer")
url = url_for(
"invenio_app_rdm_records.record_file_download",
pid_value=pid_value,
filename=file_metadata.data["key"],
preview=1 if is_preview else 0
)
# Find a suitable previewer
fileobj = PreviewFile(file_metadata, pid_value, url)
for plugin in current_previewer.iter_previewers(
previewers=[file_previewer] if file_previewer else None
):
if plugin.can_preview(fileobj):
return plugin.preview(fileobj)
return default.preview(fileobj)
def preview(pid, record, template=None, **kwargs):
"""Preview file for given record.
Plug this method into your ``RECORDS_UI_ENDPOINTS`` configuration:
.. code-block:: python
RECORDS_UI_ENDPOINTS = dict(
recid=dict(
# ...
route='/records/<pid_value/preview/<path:filename>',
view_imp='invenio_previewer.views.preview',
record_class='invenio_records_files.api:Record',
)
)
"""
# Get file from record
fileobj = current_previewer.record_file_factory(
pid, record,
request.view_args.get('filename', request.args.get('filename',
type=str)))
if not fileobj:
abort(404)
# Try to see if specific previewer is requested?
try:
file_previewer = fileobj['previewer']
except KeyError:
file_previewer = None
# Find a suitable previewer
fileobj = PreviewFile(pid, record, fileobj)
if fileobj.has_extensions('.zip'):
return zip_preview(fileobj)
else:
for plugin in current_previewer.iter_previewers(
previewers=[file_previewer] if file_previewer else None):
if plugin.can_preview(fileobj):
try:
return plugin.preview(fileobj)
except Exception:
current_app.logger.warning(
('Preview failed for {key}, in {pid_type}:{pid_value}'.
format(key=fileobj.file.key,
pid_type=fileobj.pid.pid_type,
pid_value=fileobj.pid.pid_value)),
exc_info=True)
return default.preview(fileobj)
def record_file_preview(record=None,
pid_value=None,
pid_type="recid",
file_metadata=None,
**kwargs):
"""Render a preview of the specified file."""
# Try to see if specific previewer is set
# TODO: what's the analog of: file_previewer = fileobj.get("previewer") ?
file_previewer = file_metadata.data.get("previewer")
# Find a suitable previewer
fileobj = PreviewFile(file_metadata, pid_value)
for plugin in current_previewer.iter_previewers(
previewers=[file_previewer] if file_previewer else None):
if plugin.can_preview(fileobj):
return plugin.preview(fileobj)
return default.preview(fileobj)