Move compatibility check from Django template to system check #11114

arches/app/views/base.py

@@ -16,12 +16,10 @@
 along with this program. If not, see <http://www.gnu.org/licenses/>.
 """
 
-from arches import __version__
 from arches.app.models import models
 from arches.app.models.system_settings import settings
 from arches.app.models.resource import Resource
 from arches.app.utils.betterJSONSerializer import JSONSerializer, JSONDeserializer
-from arches.app.utils.compatibility import is_compatible_with_arches, CompatibilityError
 from django.utils.translation import gettext as _
 from django.views.generic import TemplateView
 from arches.app.datatypes.datatypes import DataTypeFactory
@@ -35,10 +33,6 @@
 
 
 class BaseManagerView(TemplateView):
-    if is_compatible_with_arches() is False:
-        message = _("This project is incompatible with Arches {0}.").format(__version__)
-        raise CompatibilityError(message)
-
     template_name = ""
 
     def get_context_data(self, **kwargs):

arches/apps.py

@@ -1,8 +1,14 @@
+import tomllib
 import warnings
+from importlib.metadata import PackageNotFoundError, requires
+from pathlib import Path
 
-from django.apps import AppConfig
+from django.apps import AppConfig, apps
 from django.conf import settings
 from django.core.checks import register, Tags, Error, Warning
+from semantic_version import SimpleSpec, Version
+
+from arches import __version__
 
 from arches.settings_utils import generate_frontend_configuration
 
@@ -62,3 +68,62 @@ def check_cache_backend(app_configs, **kwargs):
             )
         )
     return errors
+
+
+@register(Tags.compatibility)
+def check_arches_compatibility(app_configs, **kwargs):
+    try:
+        arches_version = Version(__version__)
+    except ValueError:
+        arches_version = Version.coerce(__version__)
+
+    if app_configs is None:
+        app_configs = apps.get_app_configs()
+
+    errors = []
+    for config in app_configs:
+        if not getattr(config, "is_arches_application", False):
+            continue
+        try:
+            project_requirements = requires(config.name)
+        except PackageNotFoundError:
+            # Not installed by pip: read pyproject.toml directly
+            toml_path = Path(config.path).parent / "pyproject.toml"
+            if not toml_path.exists():
+                raise ValueError
+            with open(toml_path, "rb") as f:
+                data = tomllib.load(f)
+                try:
+                    project_requirements = data["project"]["dependencies"]
+                except KeyError:
+                    raise ValueError from None
+        try:
+            for requirement in project_requirements:
+                if requirement.lower().startswith("arches"):
+                    parsed_arches_requirement = SimpleSpec(
+                        requirement.lower().replace("arches", "").lstrip()
+                    )
+                    break
+            else:
+                raise ValueError
+        except ValueError:
+            errors.append(
+                Error(
+                    f"Invalid or missing arches requirement",
+                    obj=config.name,
+                    hint=project_requirements,
+                    id="arches.E002",
+                )
+            )
+            continue
+        if arches_version not in parsed_arches_requirement:
+            errors.append(
+                Error(
+                    f"Incompatible arches requirement for Arches version: {arches_version}",
+                    obj=config.name,
+                    hint=requirement,
+                    id="arches.E003",
+                )
+            )
+
+    return errors

arches/install/arches-templates/project_name/settings.py-tpl

@@ -2,10 +2,7 @@
 Django settings for {{ project_name }} project.
 """
 
-import json
 import os
-import sys
-import arches
 import inspect
 import semantic_version
 from datetime import datetime, timedelta
@@ -19,9 +16,6 @@ except ImportError:
 APP_NAME = '{{ project_name }}'
 APP_VERSION = semantic_version.Version(major=0, minor=0, patch=0)
 APP_ROOT = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
-MIN_ARCHES_VERSION = arches.__version__
-MAX_ARCHES_VERSION = arches.__version__
-
 
 WEBPACK_LOADER = {
     "DEFAULT": {

arches/settings.py

@@ -647,8 +647,6 @@
 
 APP_NAME = "Arches"
 APP_VERSION = None
-MIN_ARCHES_VERSION = None
-MAX_ARCHES_VERSION = None
 
 APP_TITLE = "Arches | Heritage Data Management"
 COPYRIGHT_TEXT = "All Rights Reserved."

releases/7.6.0.md

@@ -45,6 +45,7 @@ Arches 7.6.0 Release Notes
 - 10911 Styling fix in resource model manage menu
 - 11118 Harden SystemSettings model against too-early access #11118
 - 10726 Upgrade openpyxl package to 3.1.2 and fixes ETL modules
+- 11114 Implement arches version compatibility check as a Django system check
 - 9191 Adds unlocalized string datatype
 - 10597 Fix internationalized string/json field entry problems in the Django admin
 - 10787 Search Export: data exportable as "system values" (e.g. concept valueids) instead of "display values" (e.g. string preflabel)
@@ -178,7 +179,7 @@ Minor incompatibilities:
 -   `unzip_file()` moved from `arches.setup` to `arches.app.utils.zip`
 -   Version-related utils moved from `arches.setup` to `arches.version`
 -   `add_to_update_fields()` moved from `arches.app.models.models` to `arches.app.models.utils`.
-
+-   `arches.app.utils.compatibility` was removed in favor of a Django system check.
 
 ### Deprecations
 

tests/test_settings.py

@@ -16,10 +16,10 @@
 along with this program. If not, see <http://www.gnu.org/licenses/>.
 """
 
-from arches.settings import *
-import arches
 import os
 
+from arches.settings import *
+
 try:
     from django.utils.translation import gettext_lazy as _
 except ImportError:  # unable to import prior to installing requirements
@@ -29,9 +29,6 @@
 TEST_ROOT = os.path.normpath(os.path.join(ROOT_DIR, "..", "tests"))
 APP_ROOT = ""
 
-MIN_ARCHES_VERSION = arches.__version__
-MAX_ARCHES_VERSION = arches.__version__
-
 # LOAD_V3_DATA_DURING_TESTS = True will engage the most extensive the of the v3
 # data migration tests, which could add over a minute to the test process. It's
 # recommended that this setting only be set to True in tests/settings_local.py