Guard pattern and curve

api/s11_patterns.py

@@ -11,6 +11,9 @@ def get_pattern_schema(name: str) -> dict[str, dict[str, Any]]:
 
 
 def get_pattern(name: str, id: str) -> dict[str, Any]:
+    p_one = try_read(name, f"select * from _pattern where id = '{id}'")
+    if p_one == None:
+        return {}
     pas = read_all(name, f"select * from patterns where id = '{id}' order by _order")
     ps = []
     for r in pas:
@@ -46,6 +49,10 @@ def set_pattern_cmd(name: str, cs: ChangeSet) -> DbChangeSet:
 
 
 def set_pattern(name: str, cs: ChangeSet) -> ChangeSet:
+    if 'id' not in cs.operations[0]:
+        return ChangeSet()
+    if get_pattern(name, cs.operations[0]['id']) == {}:
+        return ChangeSet()
     return execute_command(name, set_pattern_cmd(name, cs))
 
 
@@ -70,6 +77,10 @@ def add_pattern_cmd(name: str, cs: ChangeSet) -> DbChangeSet:
 
 
 def add_pattern(name: str, cs: ChangeSet) -> ChangeSet:
+    if 'id' not in cs.operations[0]:
+        return ChangeSet()
+    if get_pattern(name, cs.operations[0]['id']) != {}:
+        return ChangeSet()
     return execute_command(name, add_pattern_cmd(name, cs))
 
 
@@ -94,6 +105,10 @@ def delete_pattern_cmd(name: str, cs: ChangeSet) -> DbChangeSet:
 
 
 def delete_pattern(name: str, cs: ChangeSet) -> ChangeSet:
+    if 'id' not in cs.operations[0]:
+        return ChangeSet()
+    if get_pattern(name, cs.operations[0]['id']) == {}:
+        return ChangeSet()
     return execute_command(name, delete_pattern_cmd(name, cs))