[Feature] EnzymeLink Annotations (#152)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#152

epdb/views.py

@@ -46,6 +46,7 @@ from .models import (
     Edge,
     ExternalDatabase,
     ExternalIdentifier,
+    EnzymeLink,
 )
 
 logger = logging.getLogger(__name__)
@@ -1528,6 +1529,32 @@ def package_rule(request, package_uuid, rule_uuid):
         return HttpResponseNotAllowed(["GET", "POST"])
 
 
+@package_permission_required()
+def package_rule_enzymelink(request, package_uuid, rule_uuid, enzymelink_uuid):
+    current_user = _anonymous_or_real(request)
+    current_package = PackageManager.get_package_by_id(current_user, package_uuid)
+    current_rule = Rule.objects.get(package=current_package, uuid=rule_uuid)
+    current_enzymelink = EnzymeLink.objects.get(rule=current_rule, uuid=enzymelink_uuid)
+
+    if request.method == "GET":
+        context = get_base_context(request)
+
+        context["title"] = f"enviPath - {current_package.name} - {current_rule.name}"
+
+        context["meta"]["current_package"] = current_package
+        context["object_type"] = "enzyme"
+        context["breadcrumbs"] = breadcrumbs(
+            current_package, "rule", current_rule, "enzymelink", current_enzymelink
+        )
+
+        context["enzymelink"] = current_enzymelink
+        context["current_object"] = current_enzymelink
+
+        return render(request, "objects/enzymelink.html", context)
+
+    return HttpResponseNotAllowed(["GET"])
+
+
 @package_permission_required()
 def package_reactions(request, package_uuid):
     current_user = _anonymous_or_real(request)