TableConfig

When using create_admin, you can pass in normal Table classes:

from piccolo_admin.endpoints import create_admin

create_admin([Director, Movie])

Alternatively, you can pass in TableConfig instances (or mix and match them).

By passing in a TableConfig you have extra control over how the UI behaves for that table. This is particularly useful when you have a Table with lots of columns.

In the future, TableConfig will be extended to allow finer grained control over the UI.

---

visible_columns

We can set which columns are visible in the list view:

from piccolo_admin.endpoints import TableConfig

movie_config = TableConfig(Movie, visible_columns=[Movie.id, Movie.name])

create_admin([Director, movie_config])

Here is the UI when just passing in a Table:

Here is the UI when just passing in a TableConfig instance instead (fewer columns are visible):

---

visible_filters

We can set which columns are visible in the filter sidebar:

from piccolo_admin.endpoints import TableConfig

movie_config = TableConfig(
    Movie,
    visible_filters=[
        Movie.name, Movie.rating, Movie.director,
    ]
)

create_admin([Director, movie_config])

Here is the UI when just passing in a Table:

Here is the UI when just passing in a TableConfig instance instead (fewer filters are visible in the sidebar):

---

rich_text_columns

We can specify which Text columns will use a rich text editor.

from piccolo_admin.endpoints import TableConfig

movie_config = TableConfig(
    Movie,
    rich_text_columns=[
        Movie.description
    ]
)

create_admin([Director, movie_config])

This allows the user to add hyperlinks, and basic formatting to their content, without having to write HTML.

---

hooks

Can be used to run custom logic when a row is created, modified, or deleted.

from piccolo_admin.endpoints import TableConfig
from piccolo_api.crud.hooks import Hook, HookType


async def my_save_hook(row: Movie):
    # Insert custom logic here
    return row


movie_config = TableConfig(
    Movie,
    hooks=[
        Hook(hook_type=HookType.pre_save, callable=my_save_hook)
    ]
)

create_admin([Director, movie_config])

To learn more about hooks, see the Hook docs in Piccolo API.

---

media_storage

Allows you store files (video / media / audio etc) in certain columns. See Media Storage.

---

validators

Allows fine grained access control over each API endpoint. See TableConfig for more information.

---

menu_group

We can set groups of tables in the table navigation sidebar. This is useful when we have many tables and in this way we can organize the tables into groups for better visibility:

from piccolo_admin.endpoints import TableConfig

movie_config = TableConfig(
    Movie,
    menu_group="Movies"
)

director_config = TableConfig(
    Director,
    menu_group="Movies"
)

create_admin([director_config, movie_config])

---

link_column

We use the primary key as the link to the edit page, but we can specify an alternative column to use as a link. If we specify the foreign key column as link Piccolo Admin will raise ValueError:

from piccolo_admin.endpoints import TableConfig

movie_config = TableConfig(
    Movie,
    link_column=Movie.name
)

create_admin([movie_config])

---

order_by

By default, the primary key is used to order the results, but we can specify one or more columns to order by instead.

Here we use the rating column in descending order:

from piccolo_admin.endpoints import TableConfig, OrderBy

movie_config = TableConfig(
    Movie,
    order_by=[OrderBy(Movie.rating, ascending=False)]
)

create_admin([movie_config])

Here we order by the rating and title columns:

movie_config = TableConfig(
    Movie,
    order_by=[
        OrderBy(Movie.rating, ascending=False),
        OrderBy(Movie.title, ascending=True)
    ]
)

This means that the results are first ordered by rating, and any rows with an equal rating are then sorted by title.

Note you can still override the order in the UI.

---

Source

class piccolo_admin.endpoints.TableConfig(table_class: Type[Table], visible_columns: List[Column] | None = None, exclude_visible_columns: List[Column] | None = None, visible_filters: List[Column] | None = None, exclude_visible_filters: List[Column] | None = None, rich_text_columns: List[Column] | None = None, hooks: List[Hook] | None = None, media_storage: Sequence[MediaStorage] | None = None, validators: Validators | None = None, menu_group: str | None = None, link_column: Column | None = None, order_by: List[OrderBy] | None = None, time_resolution: Dict[Timestamp | Timestamptz | Time, float | int] | None = None)

Gives the user more control over how a Table appears in the UI.

Parameters:

• table_class – The Table class to configure.

• visible_columns – If specified, only these columns will be shown in the list view of the UI. This is useful when you have a lot of columns.

• exclude_visible_columns – You can specify this instead of visible_columns, in which case all of the Table columns except the ones specified will be shown in the list view.

• visible_filters – If specified, only these columns will be shown in the filter sidebar of the UI. This is useful when you have a lot of columns.

• exclude_visible_filters – You can specify this instead of visible_filters, in which case all of the Table columns except the ones specified will be shown in the filter sidebar.

• rich_text_columns – You can specify rich_text_columns if you want a WYSIWYG editor on certain Piccolo Text columns. Any columns not specified will use a standard HTML textarea tag in the UI.

• hooks – These are passed directly to PiccoloCRUD, which powers Piccolo Admin under the hood. It allows you to run custom logic when a row is modified.

• media_storage – These columns will be used to store media. We don’t directly store the media in the database, but instead store a string, which is a unique identifier, and can be used to retrieve a URL for accessing the file. Piccolo Admin automatically renders a file upload widget for each media column in the UI.

• validators –

  The Validators are passed directly to PiccoloCRUD, which powers Piccolo Admin under the hood. It allows fine grained access control over each API endpoint. For example, limiting which users can POST data:

  from piccolo_api.crud.endpoints import PiccoloCRUD
  from starlette.exceptions import HTTPException
  from starlette.requests import Request
  
  
  async def manager_only(
      piccolo_crud: PiccoloCRUD,
      request: Request
  ):
      # The Piccolo `BaseUser` can be accessed from the request.
      user = request.user.user
  
      # Assuming we have another database table where we record
      # users with certain permissions.
      manager = await Manager.exists().where(manager.user == user)
  
      if not manager:
          # Raise a Starlette exception if we want to reject the
          # request.
          raise HTTPException(
              status_code=403,
              detail="Only managers are allowed to do this"
          )
  
  admin = create_admin(
      tables=TableConfig(
          Movie,
          validators=Validators(post_single=[manager_only])
      )
  )
  

• menu_group – If specified, tables can be divided into groups in the table menu. This is useful when you have many tables that you can organize into groups for better visibility.

• link_column – In the list view of Piccolo Admin, we use the primary key to link to the edit page. However, if the primary key column is hidden, due to visible_columns or exclude_visible_columns, then we need to specify an alternative column to use as the link.

• order_by – If specified, the rows are sorted by order_by, otherwise the default primary_key column is used to sort the rows.

• time_resolution –

  Controls the resolution of Time columns, and the time component of Timestamp / Timestamptz columns. The units are given in seconds. Some examples:

  • 0.001 - the max resolution is 1 millisecond (this is the minimum currently allowed by HTML input fields)

  • 1 - the max resolution is 1 second (the default)

  • 60 - the max resolution is 1 minute