I can add a new column and a new row

src/myfasthtml/core/commands.py

@@ -151,7 +151,7 @@ class Command:
         before_commands = [bc for bc in self.owner.get_bound_commands(self.name) if bc.when == "before"]
         for bound_cmd in before_commands:
           logger.debug(f"  will execute bound command {bound_cmd.command.name} BEFORE...")
-          r = bound_cmd.command.execute()  # client_response should not be forwarded as it's not the same command
+          r = bound_cmd.command.execute(client_response)
           ret_from_before_commands.append(r)
       
       # Execute main callback
@@ -166,7 +166,7 @@ class Command:
         after_commands = [bc for bc in self.owner.get_bound_commands(self.name) if bc.when == "after"]
         for bound_cmd in after_commands:
           logger.debug(f"  will execute bound command {bound_cmd.command.name} AFTER...")
-          r = bound_cmd.command.execute()  # client_response should not be forwarded as it's not the same command
+          r = bound_cmd.command.execute(client_response)
           ret_from_after_commands.append(r)
     
     all_ret = flatten(ret, ret_from_before_commands, ret_from_after_commands, collector.results)

src/myfasthtml/core/constants.py

@@ -6,6 +6,7 @@ ROUTE_ROOT = "/myfasthtml"
 
 # Datagrid
 ROW_INDEX_ID = "__row_index__"
+ROW_SELECTION_ID = "__row_selection__"
 DATAGRID_DEFAULT_COLUMN_WIDTH = 100
 DATAGRID_PAGE_SIZE = 1000
 FILTER_INPUT_CID = "__filter_input__"
@@ -19,6 +20,7 @@ class Routes:
 
 
 class ColumnType(Enum):
+  RowSelection_ = "RowSelection_"
   RowIndex = "RowIndex"
   Text = "Text"
   Number = "Number"
@@ -29,6 +31,10 @@ class ColumnType(Enum):
   Formula = "Formula"
 
 
+def get_columns_types() -> list[ColumnType]:
+  return [c for c in ColumnType if not c.value.endswith("_")]
+
+
 class ViewType(Enum):
   Table = "Table"
   Chart = "Chart"

src/myfasthtml/core/instances.py

@@ -1,9 +1,9 @@
 import logging
 import uuid
-from typing import Optional
+from typing import Optional, Literal
 
 from myfasthtml.controls.helpers import Ids
-from myfasthtml.core.commands import BoundCommand
+from myfasthtml.core.commands import BoundCommand, Command
 from myfasthtml.core.constants import NO_DEFAULT_VALUE
 from myfasthtml.core.utils import pascal_to_snake, get_class, snake_to_pascal
 
@@ -113,7 +113,10 @@ class BaseInstance:
     parent = self.get_parent()
     return parent.get_full_id() if parent else None
   
-  def bind_command(self, command, command_to_bind, when="after"):
+  def bind_command(self,
+                   command: Command | str | tuple | list,
+                   command_to_bind,
+                   when: Literal["before", "after"] = "after"):
     """
     Bind a command to another command.
 
@@ -126,18 +129,28 @@ class BaseInstance:
         Duplicate bindings are automatically prevented using two mechanisms:
         1. Check if the same binding already exists
     """
-    command_name = command.name if hasattr(command, "name") else command
-
-    # Protection 1: Check if this binding already exists to prevent duplicates
-    existing_bindings = self._bound_commands.get(command_name, [])
-    for existing in existing_bindings:
-      if existing.command.name == command_to_bind.name and existing.when == when:
-        # Binding already exists, don't add it again
-        return
-
-    # Add new binding
-    bound = BoundCommand(command=command_to_bind, when=when)
-    self._bound_commands.setdefault(command_name, []).append(bound)
+    
+    def _bind(_command_name, _command_to_bind, _when):
+      # Check if this binding already exists to prevent duplicates
+      existing_bindings = self._bound_commands.get(_command_name, [])
+      for existing in existing_bindings:
+        if existing.command.name == _command_to_bind.name and existing.when == _when:
+          return  # Binding already exists, don't add it again
+      
+      # Add new binding
+      bound = BoundCommand(command=_command_to_bind, when=_when)
+      self._bound_commands.setdefault(command_name, []).append(bound)
+    
+    commands = [command] if isinstance(command, (str, Command)) else command
+    for c in commands:
+      command_name = c.name if hasattr(c, "name") else c
+      _bind(c, command_to_bind, when)
+  
+  def unbind_command(self, command: Command | str | tuple | list):
+    commands = [command] if isinstance(command, (str, Command)) else command
+    for c in commands:
+      command_name = c.name if hasattr(c, "name") else c
+      self._bound_commands.pop(command_name, None)
   
   def get_bound_commands(self, command_name):
     return self._bound_commands.get(command_name, [])