Columns meta rpc patch

docs/docs/api/rpc.md

@@ -107,7 +107,9 @@ To use an RPC function:
     options:
       members:
       - list_
+      - patch
       - ColumnMetaData
+      - SettableColumnMetaData
 
 ## Responses
 

mathesar/rpc/columns/metadata.py

@@ -7,7 +7,7 @@
 from modernrpc.auth.basic import http_basic_auth_login_required
 
 from mathesar.rpc.exceptions.handlers import handle_rpc_exceptions
-from mathesar.utils.columns import get_columns_meta_data
+from mathesar.utils.columns import get_columns_meta_data, patch_columns_meta_data
 
 
 class ColumnMetaData(TypedDict):
@@ -73,6 +73,42 @@ def from_model(cls, model):
         )
 
 
+class SettableColumnMetaData(TypedDict):
+    """
+    Settable metadata fields for a column in a table.
+
+    Attributes:
+        attnum: The attnum of the column in the table.
+        bool_input: How the input for a boolean column should be shown.
+        bool_true: A string to display for `true` values.
+        bool_false: A string to display for `false` values.
+        num_min_frac_digits: Minimum digits shown after the decimal point.
+        num_max_frac_digits: Maximum digits shown after the decimal point.
+        num_show_as_perc: Whether to show a numeric value as a percentage.
+        mon_currency_symbol: The currency symbol shown for money value.
+        mon_currency_location: Where the currency symbol should be shown.
+        time_format: A string representing the format of time values.
+        date_format: A string representing the format of date values.
+        duration_min: The smallest unit for displaying durations.
+        duration_max: The largest unit for displaying durations.
+        duration_show_units: Whether to show the units for durations.
+    """
+    attnum: int
+    bool_input: Optional[Literal["dropdown", "checkbox"]]
+    bool_true: Optional[str]
+    bool_false: Optional[str]
+    num_min_frac_digits: Optional[int]
+    num_max_frac_digits: Optional[int]
+    num_show_as_perc: Optional[bool]
+    mon_currency_symbol: Optional[str]
+    mon_currency_location: Optional[Literal["after-minus", "end-with-space"]]
+    time_format: Optional[str]
+    date_format: Optional[str]
+    duration_min: Optional[str]
+    duration_max: Optional[str]
+    duration_show_units: Optional[bool]
+
+
 @rpc_method(name="columns.metadata.list")
 @http_basic_auth_login_required
 @handle_rpc_exceptions
@@ -91,3 +127,32 @@ def list_(*, table_oid: int, database_id: int, **kwargs) -> list[ColumnMetaData]
     return [
         ColumnMetaData.from_model(model) for model in columns_meta_data
     ]
+
+
+@rpc_method(name="columns.metadata.patch")
+@http_basic_auth_login_required
+@handle_rpc_exceptions
+def patch(
+        *,
+        column_meta_data_list: list[SettableColumnMetaData],
+        table_oid: int,
+        database_id: int,
+        **kwargs
+) -> list[ColumnMetaData]:
+    """
+    Alter metadata settings associated with columns of a table for a database.
+
+    Args:
+        column_meta_data_list: A list describing desired metadata alterations.
+        table_oid: Identity of the table whose metadata we'll modify.
+        database_id: The Django id of the database containing the table.
+
+    Returns:
+        List of altered metadata objects.
+    """
+    columns_meta_data = patch_columns_meta_data(
+        column_meta_data_list, table_oid, database_id
+    )
+    return [
+        ColumnMetaData.from_model(model) for model in columns_meta_data
+    ]

mathesar/tests/rpc/columns/test_c_metadata.py

@@ -57,3 +57,57 @@ def mock_get_columns_meta_data(_table_oid, _database_id):
     ]
     actual_metadata_list = metadata.list_(table_oid=table_oid, database_id=database_id)
     assert actual_metadata_list == expect_metadata_list
+
+
+# TODO consider mocking out ColumnMetaData queryset for this test
+def test_columns_meta_data_patch(monkeypatch):
+    database_id = 2
+    table_oid = 123456
+    expect_metadata_list = [
+        metadata.ColumnMetaData(
+            database_id=database_id, table_oid=table_oid, attnum=2,
+            bool_input="dropdown", bool_true="TRUE", bool_false="FALSE",
+            num_min_frac_digits=5, num_max_frac_digits=10, num_show_as_perc=False,
+            mon_currency_symbol="EUR", mon_currency_location="end-with-space",
+            time_format=None, date_format=None,
+            duration_min=None, duration_max=None, duration_show_units=True,
+        ),
+        metadata.ColumnMetaData(
+            database_id=database_id, table_oid=table_oid, attnum=8,
+            bool_input="checkbox", bool_true="true", bool_false="false",
+            num_min_frac_digits=2, num_max_frac_digits=8, num_show_as_perc=True,
+            mon_currency_symbol="$", mon_currency_location="after-minus",
+            time_format=None, date_format=None,
+            duration_min=None, duration_max=None, duration_show_units=True,
+        ),
+    ]
+
+    def mock_patch_columns_meta_data(column_meta_data_list, _table_oid, _database_id):
+        server_model = Server(id=2, host='example.com', port=5432)
+        db_model = Database(id=_database_id, name='mymathesardb', server=server_model)
+        return [
+            ColumnMetaData(
+                database=db_model, table_oid=_table_oid, attnum=2,
+                bool_input="dropdown", bool_true="TRUE", bool_false="FALSE",
+                num_min_frac_digits=5, num_max_frac_digits=10, num_show_as_perc=False,
+                mon_currency_symbol="EUR", mon_currency_location="end-with-space",
+                time_format=None, date_format=None,
+                duration_min=None, duration_max=None, duration_show_units=True,
+            ),
+            ColumnMetaData(
+                database=db_model, table_oid=_table_oid, attnum=8,
+                bool_input="checkbox", bool_true="true", bool_false="false",
+                num_min_frac_digits=2, num_max_frac_digits=8, num_show_as_perc=True,
+                mon_currency_symbol="$", mon_currency_location="after-minus",
+                time_format=None, date_format=None,
+                duration_min=None, duration_max=None, duration_show_units=True,
+            )
+        ]
+
+    monkeypatch.setattr(metadata, "patch_columns_meta_data", mock_patch_columns_meta_data)
+    actual_metadata_list = metadata.patch(
+        column_meta_data_list=expect_metadata_list,
+        table_oid=table_oid,
+        database_id=database_id
+    )
+    assert actual_metadata_list == expect_metadata_list

mathesar/tests/rpc/test_endpoints.py

@@ -39,6 +39,11 @@
         "columns.metadata.list",
         [user_is_authenticated]
     ),
+    (
+        columns.metadata.patch,
+        "columns.metadata.patch",
+        [user_is_authenticated]
+    ),
     (
         connections.add_from_known_connection,
         "connections.add_from_known_connection",

mathesar/utils/columns.py

@@ -1,5 +1,20 @@
-from mathesar.models.base import ColumnMetaData
+from mathesar.models.base import ColumnMetaData, Database
 
 
 def get_columns_meta_data(table_oid, database_id):
-    return ColumnMetaData.filter(database__id=database_id, table_oid=table_oid)
+    return ColumnMetaData.objects.filter(
+        database__id=database_id, table_oid=table_oid
+    )
+
+
+def patch_columns_meta_data(column_meta_data_list, table_oid, database_id):
+    db_model = Database.objects.get(id=database_id)
+    for meta_data_dict in column_meta_data_list:
+        # TODO decide if this is worth the trouble of doing in bulk.
+        ColumnMetaData.objects.update_or_create(
+            database=db_model,
+            table_oid=table_oid,
+            attnum=meta_data_dict["attnum"],
+            defaults=meta_data_dict
+        )
+    return get_columns_meta_data(table_oid, database_id)