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Add --only-with to mapit_import so you can only import particular areas #200

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Add --only-with to mapit_import so you can only import particular areas #200

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32 changes: 32 additions & 0 deletions mapit/management/commands/mapit_import.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@
# Not using LayerMapping as want more control, but what it does is what this does
# from django.contrib.gis.utils import LayerMapping
from django.contrib.gis.gdal import DataSource
from django.contrib.gis.gdal.error import OGRIndexError
from django.conf import settings
from django.utils import six
from django.utils.six.moves import input
Expand Down Expand Up @@ -113,6 +114,17 @@ class Command(LabelCommand):
dest='fix_invalid_polygons',
help="Try to fix any invalid polygons and multipolygons found"
),
make_option(
'--only-with',
action="append",
dest='only_with',
metavar='FIELD_NAME:VALUE',
help=(
"Ignore features without this field / value combination "
"(If specified multiple times, the feature must have all "
"such specified combinations.)"
)
),
)

def handle_label(self, filename, **options):
Expand Down Expand Up @@ -140,6 +152,14 @@ def handle_label(self, filename, **options):
code_field = options['code_field']
code_type_code = options['code_type']
encoding = options['encoding'] or 'utf-8'
only_with = {}
if options['only_with']:
for kv in options['only_with']:
m = re.search(r'^(.*?):(.*)', kv)
if not m:
message = "The --only-with value '{0}' did not contain a ':'"
raise CommandError(message.format(kv))
only_with[m.group(1)] = m.group(2)

if len(area_type_code) > 3:
raise CommandError("Area type code must be 3 letters or fewer, sorry")
Expand Down Expand Up @@ -245,6 +265,18 @@ def verbose(*args):
"Could not find code using code field '%s' - should it be something else? "
"It will be one of these: %s. Specify which with --code_field" % (code_field, choices))

# If some --only-with parameters were specified, the
# feature must have all such key / value combination:
if only_with:
try:
if not all(
feat.get(k) == str(v) for k, v in only_with.items()
):
continue
except OGRIndexError:
# This is raised if the key is not found in the feature:
continue

self.stdout.write(" looking at '%s'%s" % (name, (' (%s)' % code) if code else ''))

g = None
Expand Down