#86 Revocation edit

* adds support for revocation edit
    * revocation document files will be replaced on an edit

intervention/forms/modalForms.py

@@ -6,8 +6,11 @@ Created on: 27.09.21
 
 """
 from dal import autocomplete
+from django.core.exceptions import ObjectDoesNotExist
+from django.db.models.fields.files import FieldFile
 
-from konova.utils.message_templates import DEDUCTION_ADDED, REVOCATION_ADDED, DEDUCTION_REMOVED, DEDUCTION_EDITED
+from konova.utils.message_templates import DEDUCTION_ADDED, REVOCATION_ADDED, DEDUCTION_REMOVED, DEDUCTION_EDITED, \
+    REVOCATION_EDITED, FILE_TYPE_UNSUPPORTED, FILE_SIZE_TOO_LARGE
 from user.models import User, UserActionLogEntry
 from django.db import transaction
 from django import forms
@@ -15,7 +18,7 @@ from django.utils.translation import gettext_lazy as _
 
 from compensation.models import EcoAccount, EcoAccountDeduction
 from intervention.inputs import TextToClipboardInput
-from intervention.models import Intervention, InterventionDocument
+from intervention.models import Intervention, InterventionDocument, RevocationDocument
 from konova.forms import BaseModalForm, NewDocumentForm, RemoveModalForm
 from konova.utils.general import format_german_float
 from konova.utils.user_checks import is_default_group_only
@@ -157,6 +160,7 @@ class NewRevocationModalForm(BaseModalForm):
             }
         )
     )
+    document_model = RevocationDocument
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -166,12 +170,61 @@ class NewRevocationModalForm(BaseModalForm):
             "enctype": "multipart/form-data",  # important for file upload
         }
 
+    def is_valid(self):
+        super_valid = super().is_valid()
+
+        _file = self.cleaned_data.get("file", None)
+
+        if isinstance(_file, FieldFile):
+            # FieldFile declares that no new file has been uploaded and we do not need to check on the file again
+            return super_valid
+
+        mime_type_valid = self.document_model.is_mime_type_valid(_file)
+        if not mime_type_valid:
+            self.add_error(
+                "file",
+                FILE_TYPE_UNSUPPORTED
+            )
+
+        file_size_valid = self.document_model.is_file_size_valid(_file)
+        if not file_size_valid:
+            self.add_error(
+                "file",
+                FILE_SIZE_TOO_LARGE
+            )
+
+        file_valid = mime_type_valid and file_size_valid
+        return super_valid and file_valid
+
     def save(self):
         revocation = self.instance.add_revocation(self)
         self.instance.mark_as_edited(self.user, self.request, edit_comment=REVOCATION_ADDED)
         return revocation
 
 
+class EditRevocationModalForm(NewRevocationModalForm):
+    revocation = None
+
+    def __init__(self, *args, **kwargs):
+        self.revocation = kwargs.pop("revocation", None)
+        super().__init__(*args, **kwargs)
+        try:
+            doc = self.revocation.document.file
+        except ObjectDoesNotExist:
+            doc = None
+        form_data = {
+            "date": str(self.revocation.date),
+            "file": doc,
+            "comment": self.revocation.comment,
+        }
+        self.load_initial_data(form_data)
+
+    def save(self):
+        revocation = self.instance.edit_revocation(self)
+        self.instance.mark_as_edited(self.user, self.request, edit_comment=REVOCATION_EDITED)
+        return revocation
+
+
 class RemoveRevocationModalForm(RemoveModalForm):
     """ Removing modal form for Revocation