# QR code

* refactors qr code generating into class
* refactors usage of former qr code method calls

compensation/views/compensation/report.py

@@ -14,7 +14,7 @@ from compensation.models import Compensation
 from konova.contexts import BaseContext
 from konova.forms import SimpleGeomForm
 from konova.sub_settings.context_settings import TAB_TITLE_IDENTIFIER
-from konova.utils.generators import generate_qr_code
+from konova.utils.qrcode import QrCode
 from konova.views.report import AbstractPublicReportView
 
 
@@ -48,10 +48,14 @@ class CompensationPublicReportView(AbstractPublicReportView):
         )
         parcels = comp.get_underlying_parcels()
 
-        qrcode_url = request.build_absolute_uri(reverse("compensation:report", args=(id,)))
+        qrcode = QrCode(
-        qrcode_img = generate_qr_code(qrcode_url, 10)
+            content=request.build_absolute_uri(reverse("compensation:report", args=(id,))),
-        qrcode_lanis_url = comp.get_LANIS_link()
+            size=10
-        qrcode_img_lanis = generate_qr_code(qrcode_lanis_url, 7)
+        )
+        qrcode_lanis = QrCode(
+            content=comp.get_LANIS_link(),
+            size=7
+        )
 
         # Order states by surface
         before_states = comp.before_states.all().order_by("-surface").prefetch_related("biotope_type")
@@ -61,12 +65,12 @@ class CompensationPublicReportView(AbstractPublicReportView):
         context = {
             "obj": comp,
             "qrcode": {
-                "img": qrcode_img,
+                "img": qrcode.get_img(),
-                "url": qrcode_url,
+                "url": qrcode.get_content(),
             },
             "qrcode_lanis": {
-                "img": qrcode_img_lanis,
+                "img": qrcode_lanis.get_img(),
-                "url": qrcode_lanis_url,
+                "url": qrcode_lanis.get_content(),
             },
             "is_entry_shared": False,  # disables action buttons during rendering
             "before_states": before_states,

compensation/views/eco_account/report.py

@@ -14,7 +14,7 @@ from compensation.models import EcoAccount
 from konova.contexts import BaseContext
 from konova.forms import SimpleGeomForm
 from konova.sub_settings.context_settings import TAB_TITLE_IDENTIFIER
-from konova.utils.generators import generate_qr_code
+from konova.utils.qrcode import QrCode
 from konova.views.report import AbstractPublicReportView
 
 
@@ -48,10 +48,14 @@ class EcoAccountPublicReportView(AbstractPublicReportView):
         )
         parcels = acc.get_underlying_parcels()
 
-        qrcode_url = request.build_absolute_uri(reverse("compensation:acc:report", args=(id,)))
+        qrcode = QrCode(
-        qrcode_img = generate_qr_code(qrcode_url, 10)
+            content=request.build_absolute_uri(reverse("compensation:acc:report", args=(id,))),
-        qrcode_lanis_url = acc.get_LANIS_link()
+            size=10
-        qrcode_img_lanis = generate_qr_code(qrcode_lanis_url, 7)
+        )
+        qrcode_lanis = QrCode(
+            content=acc.get_LANIS_link(),
+            size=7
+        )
 
         # Order states by surface
         before_states = acc.before_states.all().order_by("-surface").select_related("biotope_type__parent")
@@ -67,12 +71,12 @@ class EcoAccountPublicReportView(AbstractPublicReportView):
         context = {
             "obj": acc,
             "qrcode": {
-                "img": qrcode_img,
+                "img": qrcode.get_img(),
-                "url": qrcode_url,
+                "url": qrcode.get_content(),
             },
             "qrcode_lanis": {
-                "img": qrcode_img_lanis,
+                "img": qrcode_lanis.get_img(),
-                "url": qrcode_lanis_url,
+                "url": qrcode_lanis.get_content(),
             },
             "is_entry_shared": False,  # disables action buttons during rendering
             "before_states": before_states,

ema/views/report.py

@@ -14,7 +14,7 @@ from ema.models import Ema
 from konova.contexts import BaseContext
 from konova.forms import SimpleGeomForm
 from konova.sub_settings.context_settings import TAB_TITLE_IDENTIFIER
-from konova.utils.generators import generate_qr_code
+from konova.utils.qrcode import QrCode
 from konova.views.report import AbstractPublicReportView
 
 
@@ -48,10 +48,14 @@ class EmaPublicReportView(AbstractPublicReportView):
         )
         parcels = ema.get_underlying_parcels()
 
-        qrcode_url = request.build_absolute_uri(reverse("ema:report", args=(id,)))
+        qrcode = QrCode(
-        qrcode_img = generate_qr_code(qrcode_url, 10)
+            content=request.build_absolute_uri(reverse("ema:report", args=(id,))),
-        qrcode_lanis_url = ema.get_LANIS_link()
+            size=10
-        qrcode_img_lanis = generate_qr_code(qrcode_lanis_url, 7)
+        )
+        qrcode_lanis = QrCode(
+            content=ema.get_LANIS_link(),
+            size=7
+        )
 
         # Order states by surface
         before_states = ema.before_states.all().order_by("-surface").prefetch_related("biotope_type")
@@ -61,12 +65,12 @@ class EmaPublicReportView(AbstractPublicReportView):
         context = {
             "obj": ema,
             "qrcode": {
-                "img": qrcode_img,
+                "img": qrcode.get_img(),
-                "url": qrcode_url
+                "url": qrcode.get_content(),
             },
             "qrcode_lanis": {
-                "img": qrcode_img_lanis,
+                "img": qrcode_lanis.get_img(),
-                "url": qrcode_lanis_url
+                "url": qrcode_lanis.get_content(),
             },
             "is_entry_shared": False,  # disables action buttons during rendering
             "before_states": before_states,

intervention/views/report.py

@@ -14,7 +14,7 @@ from intervention.models import Intervention
 from konova.contexts import BaseContext
 from konova.forms import SimpleGeomForm
 from konova.sub_settings.context_settings import TAB_TITLE_IDENTIFIER
-from konova.utils.generators import generate_qr_code
+from konova.utils.qrcode import QrCode
 from konova.views.report import AbstractPublicReportView
 
 
@@ -52,21 +52,26 @@ class InterventionPublicReportView(AbstractPublicReportView):
         distinct_deductions = intervention.deductions.all().distinct(
             "account"
         )
-        qrcode_url = request.build_absolute_uri(reverse("intervention:report", args=(id,)))
+
-        qrcode_img = generate_qr_code(qrcode_url, 10)
+        qrcode = QrCode(
-        qrcode_lanis_url = intervention.get_LANIS_link()
+            content=request.build_absolute_uri(reverse("intervention:report", args=(id,))),
-        qrcode_img_lanis = generate_qr_code(qrcode_lanis_url, 7)
+            size=10
+        )
+        qrcode_lanis = QrCode(
+            content=intervention.get_LANIS_link(),
+            size=7
+        )
 
         context = {
             "obj": intervention,
             "deductions": distinct_deductions,
             "qrcode": {
-                "img": qrcode_img,
+                "img": qrcode.get_img(),
-                "url": qrcode_url,
+                "url": qrcode.get_content(),
             },
             "qrcode_lanis": {
-                "img": qrcode_img_lanis,
+                "img": qrcode_lanis.get_img(),
-                "url": qrcode_lanis_url,
+                "url": qrcode_lanis.get_content(),
             },
             "geom_form": geom_form,
             "parcels": parcels,

konova/utils/generators.py

@@ -42,28 +42,6 @@ def generate_random_string(length: int, use_numbers: bool = False, use_letters_l
     ret_val = "".join(random.choice(elements) for i in range(length))
     return ret_val
 
-
-def generate_qr_code(content: str, size: int = 20) -> str:
-    """ Generates a qr code from given content
-
-    Args:
-        content (str): The content for the qr code
-        size (int): The image size
-
-    Returns:
-        qrcode_svg (str): The qr code as svg
-    """
-    qrcode_factory = qrcode.image.svg.SvgImage
-    qrcode_img = qrcode.make(
-        content,
-        image_factory=qrcode_factory,
-        box_size=size
-    )
-    stream = BytesIO()
-    qrcode_img.save(stream)
-    return stream.getvalue().decode()
-
-
 class IdentifierGenerator:
     _MODEL = None
 

konova/utils/qrcode.py

@@ -0,0 +1,47 @@
+"""
+Author: Michel Peltriaux
+Created on: 14.12.25
+
+"""
+from io import BytesIO
+
+import qrcode
+import qrcode.image.svg as svg
+
+
+class QrCode:
+    """ A wrapping class for creating a qr code with content
+
+    """
+    _content = None
+    _img = None
+
+    def __init__(self, content: str, size: int):
+        self._content = content
+        self._img = self._generate_qr_code(content, size)
+
+    def _generate_qr_code(self, content: str, size: int = 20) -> str:
+        """ Generates a qr code from given content
+
+        Args:
+            content (str): The content for the qr code
+            size (int): The image size
+
+        Returns:
+            qrcode_svg (str): The qr code as svg
+        """
+        img_factory = svg.SvgImage
+        qrcode_img = qrcode.make(
+            content,
+            image_factory=img_factory,
+            box_size=size
+        )
+        stream = BytesIO()
+        qrcode_img.save(stream)
+        return stream.getvalue().decode()
+
+    def get_img(self):
+        return self._img
+
+    def get_content(self):
+        return self._content