Widgets in Forms

This is the official documentation of the forestadmin-agent-django and forestadmin-agent-flask Python agents.

Field Widgets empower your Actions Forms providing various options to display inputs and ease operators in their daily operations.

Widgets

Widget	Supported types	Minimal version	Description
null	All types	1.3.0	Use the default widget
AddressAutocomplete	String	1.3.0	Display a text input with address autocomplete.
Checkbox	Boolean	1.3.0	Display a checkbox with true/false and possibly null values.
CheckboxGroup	StringList, NumberList	1.3.0	Display a group of checkboxes to select multiple values.
ColorPicker	String	1.3.0	Display a color picker to select a color.
CurrencyInput	Number	1.3.0	Display a currency input.
DatePicker	Date, Dateonly, String	1.3.0	Display a calendar date picker
Dropdown	Date, Dateonly, Number, String, StringList	1.3.0	Users can choose between a limited set of values.
FilePicker	File, FileList	1.3.0	Users can upload files.
JsonEditor	Json	1.3.0	Display a Json editor with syntax highlighting.
NumberInput	Number	1.3.0	Display a standard number input.
NumberInputList	NumberList	1.3.0	Display a standard number input to enter a list of number values.
RadioGroup	Date, Dateonly, Number, String	1.3.0	Group of radio buttons to choose a value from.
RichText	String	1.3.0	Rich text area allowing to input formatted text.
TextArea	String	1.3.0	Multi-line text area.
TextInput	String	1.3.0	One-line text input.
TextInputList	StringList	1.3.0	One-line text input to enter a list of string values
TimePicker	Time	1.3.0	Input for entering a time
UserDropdown	String, StringList	1.3.0	Dropdown containing the users available in the current project

Address autocomplete widget

The address autocomplete widget allows to input an address as a text value, autocompleted by the Google Maps API.

agent.customize_collection('customer').add_action('Update address', {
    "scope": "Single",
    "form": [
        {
            "label": 'Address',
            "type": 'String',
            "widget": 'AddressAutocomplete',
            "placeholder": 'Type the address here',
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form (when empty):

Address autocomplete widget on an action form (empty)

And once the user starts typing:

Address autocomplete widget on an action form (with suggestions)

Options

Option	Type	Usage	Minimal version	Description
placeholder	string	optional	1.3.0	Placeholder shown in the component.

Checkbox widget

The checkbox widget allows to activate or deactivate a boolean value.

agent.customize_collection('customer').add_action('Send a notification', {
    "scope": "Single",
    "form": [
        {
            "label": 'Address',
            "type": 'Single',
            "widget": 'Checkbox',
            "is_required": True,
            "default_value": False,
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Checkbox widget on an action form

Options

The Checkbox widget has no specific options, but its behavior can be customized using the following already existing options on fields:

Option	Type	Usage	Minimal version	Description
default_value	boolean or None	optional	1.3.0	Default value of the field. Define a value different from None in combination to is_required to receive a not-null value even if the user did not click the widget.
is_required	boolean	optional	1.3.0	If is_required is set to false (default value), the checkbox widget allows users to choose between 3 states: True, False and Null. Setting is_required to True only allows 2 states: True and False. In both cases the default value will be None if not defined.

By default, the Checkbox widget allows 3 states:

• None

• True

• False

To ensure having only 2 states, you need to:

1. set the is_required option to True,

2. define a value for the default_value option.

Checkbox group widget

The checkbox group widget allows to select multiple values from a list of options.

agent.customize_collection('product').add_action('Leave a review', {
    "scope": 'Single',
    "form": [
        {
            "label": "Why do you like this product?",
            "type": "StringList",
            "widget": "CheckboxGroup",
            "options": [
              { "value": "price", "label": "Good price" },
              { "value": "quality", "label": "Build quality" },
              { "value": "look", "label": "It looks good" },
            ],
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Checkbox group widget on an action form

Options

Option	Type	Usage	Minimal version	Description
options	An array if values, an array of value/label pairs, or a function receiving a context object returning this shape.	required	1.3.0	List of available options in the component. Supported formats: ["Good", "Very good"] [{"value": 2, "label": "Good"}, {"value": 3, "label": "Very good"}] lambda context: ["Good", "Very good"] (context) => [{"value": 2, "label": "Good"}, {"value": 3, "label": "Very good"}]

Color picker widget

The color picker widget allows to select a color.

agent.customize_collection('organization').add_action('Customize UI', {
    "scope": "Single",
    "form": [
        {
            "label": "Background color",
            "type": "String",
            "widget": "ColorPicker",
            "placeholder": "Select the color",
            "is_required": True,
            "enable_opacity": False,
            "quickPalette": [
                "#6002ee",
                "#90ee02",
                "#021aee",
                "#d602ee",
                "#ee0290",
                "#ee6002",
            ],
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Color picker widget on an action form

Options

Option	Type	Usage	Minimal version	Description
enable_opacity	boolean	optional	1.3.0	Allow users to select a color with an opacity.
placeholder	string	optional	1.3.0	Placeholder shown in the component.
quick_palette	string	optional	1.3.0	List of colors to display in the quick palette. The list can be an array of hex colors or rgba colors.

Currency input widget

The currency input widget allows to input a currency value.

agent.customize_collection('product').add_action('Change price', {
    "scope": "Single",
    "form": [
        {
            "label": "Price",
            "type": "Number",
            "widget": "CurrencyInput",
            "placeholder": "Enter the new price",
            "is_required": True,
            "min": 0,
            "max": 1000,
            "step": 1,
            "currency": 'USD',
            "base": 'Unit',
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Currency input widget on an action form

Options

Option	Type	Usage	Minimal version	Description
currency	string or a function returning a string (dynamic forms).	required	1.3.0	Currency code to display in the component. Valid currency ISO codes ↗ is required.
base	Unit (default value) or Cent	optional	1.3.0	Base unit to use for the value.unitValue is expressed in the currency's base unit.centValue is expressed as a hundredth of the base unit (typically in cents).
min	number or a function returning a number (dynamic forms).	optional	1.3.0	Minimum value allowed.
max	number or a function returning a number (dynamic forms).	optional	1.3.0	Maximum value allowed.
placeholder	string	optional	1.3.0	Placeholder shown in the component.
step	number or a function returning a number (dynamic forms).	optional	1.3.0	Step between two values.

DatePicker widget

The date picker widget allows to input a date in a form

from datetime import datetime, timedelta
agent.customize_collection('order').add_action('Set shipping date', {
    "scope": "Single",
    "form": [
        {
            "label": "Shipping date",
            "type": "Date",
            "widget": "DatePicker",
            "format": 'DD-MM-YYYY',
            "min": datetime.now() - timedelta(days=10),
            "max": datetime.now(),
            "placeholder": "please indicate when you shipped the item",
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form :

Date input on an action form

Note: using a Dateonly field type will hide the time section from the date picker

Options

Option	Type	Usage	Minimal version	Description
format	string or function returning a string	optional	1.3.0	The date picker uses moment.js library under the hood. You can refer to this documentation ↗ to specify your date display format
placeholder	string	optional	1.3.0	Text will be shown as placeholder if the field is empty
min	Date or function returning a Date	optional	1.3.0	The minimum date allowed to be set in the field
max	Date or function returning a Date	optional	1.3.0	The maximum date allowed to be set in the field

The dates are sent as ISO 8601 formatted strings over the network. In order to use them as Date object in your hooks, you can parse them directly like so

Dropdown widget

The dropdown widget allows to select a value from a list of options.

agent.customize_collection('product').add_action('Leave a review', {
    "scope": "Single",
    "form": [
        {
            "label": "Rating",
            "type": "Number",
            "widget": "Dropdown",
            "options": [
                { "value": 0, "label": "Poor" },
                { "value": 1, "label": "Fair" },
                { "value": 2, "label": "Good" },
                { "value": 3, "label": "Very good" },
                { "value": 4, "label": "Excellent" },
            ],
            "search": "disabled",
            "placeholder": "Select a rating",
            "is_required": True,
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Dropdown widget on an action form

In this next example, we call a remote api to get a list of products and then perform a custom filter based on given fields of the json response, and return the first 25. This example uses "search": "dynamic" dropdown widget, which provides you with the search_value in the callback context.

Note: when a search is performed, only the field on which it is performed will have its options recomputed.

from forestadmin.datasource_toolkit.decorators.action.context.base import (
    ActionContext
)
import requests

def options_fn(context: ActionContext, search_value: str | None):
    products = requests.get('https://api.fake-eshop.com/v2/products').json()
    searched_products = []
    for product in products:
        if search_value is None:  # case of initialization
            searched_products.append({ "label": product["name"], "value": product["id"] })
            continue

        for field in ['description', 'name', 'features', 'keyword', 'category']:
            if search_value.lower() in product[field].lower():
                searched_products.append({ "label": product["name"], "value": product["id"] })
                break

    return sorted(searched_products, key=lambda x: ["label"])[0:25]

agent.customize_collection('product').add_action('Add more products', {
    "scope": "Global",
    "form": [
        {
            "label": "Select some products",
            "type": "StringList",
            "widget": "Dropdown",
            "options": options_fn,
            "search": "dynamic",
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

Options

Option	Type	Usage	Minimal version	Description
options	Either an array of values, or an array of value/label pairs, or a function returning one of those arrays	required	1.3.0	List of available options in the component. Supported formats: ["Good", "Very good"] [{"value": 2, "label": "Good"}, {"value": 3, "label": "Very good"}]
placeholder	string	optional	1.3.0	Placeholder shown in the component.
search	static, dynamic or disabled(default)	optional	1.3.0	Allow users to input text to filter values displayed in the dropdown. - disabled: Users need to scroll to find the appropriate option. - static: Users can search a value by typing terms in an input. The search will be done in the browser, based on the label. - dynamic The search is performed on the agent side, using any custom logic needed to fetch the required options

File picker widget

The file picker allows to upload files

import os
from forestadmin.datasource_toolkit.interfaces.actions import File
from forestadmin.datasource_toolkit.decorators.action.context.single import (
    ActionContextSingle
)
from forestadmin.datasource_toolkit.decorators.action.result_builder import (
    ResultBuilder
)

def read_file(path: str):
    with open(path, "rb") as fin:
        return fin.read()

def write_file(directory: str, file: File):
    with open(os.path.join(directory, os.path.basename(file.name)), "wb") as fout:
        fout.write(file.buffer)

async def execute(context: ActionContextSingle, result_builder: ResultBuilder):
  try:
      username = await context.get_record(["username"])["username"]
      user_directory = os.path.join(
          __dirname,
          'data',
          'documents',
          sanitize(username),
      )
      write_file(user_director, context.form_values["Avatar picture"])
      for f in context.form_values["Identification"]:
          write_file(user_director, f)
      return result_builder.success("Profile updated")
  except Exception as exc:
      return result_builder.error(f"Upload failed with error: {exc}")

agent.customize_collection('user').add_action('Update user identification details', {
    "scope": "Single",
    "form": [
        {
            "label": "Avatar picture",
            "type": "File",
            "widget": "FilePicker",
            "description": "Upload a profile picture or leave it to use the default one",
            "extensions": ['png', 'jpg'],
            "max_size_mb": 20,
            "default_value": readFile(
              os.path.join(__dirname, './data/avatars/default-avatar.png'),
            ),
        },
        {
            "label": "Identification",
            "type": "FileList",
            "widget": "FilePicker",
            "description": "Upload up to 4 documents to identify the user",
            "extensions": ["png", "jpg", "bmp", "pdf", "gif"],
            "max_size_mb": 2,
            "max_count": 4,
            "is_required": True,
        },
    ],
    "execute": execute
})

The above code will produce the following form:

File picker widget on an action form

Options

Option	Type	Usage	Minimal version	Description
extensions	An array of string values, or a function returning this shape	optional	1.3.0	The whitelist of file extensions allowed. If not specified, any file extension will be accepted
max_size_mb	A number, or a function returning a number	optional	1.3.0	The max file size allowed to upload. Any file size is allowed if left empty. Make sure your server will be able to handle it.
max_count	A positive integer number, or a function returning this shape	optional	1.3.0 (only available if the field type is FileList)	The max number of files allowed to be uploaded. If not specified, any number of files is allowed

Number input widget

The number input widget allows to input a number value.

agent.customize_collection('product').add_action('Change price', {
    "scope": "Single",
    "form": [
        {
            "label": "Price",
            "type": "Number",
            "widget": "NumberInput",
            "placeholder": "Enter the new price",
            "isRequired": True,
            "min": 0,
            "max": 1000,
            "step": 1,
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Number input widget on an action form

Options

Option	Type	Usage	Minimal version	Description
min	number or a function returning a number (dynamic forms).	optional	1.3.0	Minimum value allowed.
max	number or a function returning a number (dynamic forms).	optional	1.3.0	Maximum value allowed.
placeholder	string	optional	1.3.0	Placeholder shown in the component.
step	number or a function returning a number (dynamic forms).	optional	1.3.0	Step between two values.

JSON editor widget

The JSON editor widget display a rich editor with syntax highlighting for JSON.

agent.customize_collection('product').add_action('Set properties', {
    "scope": "Single",
    "form": [
        {
            "label": "Properties",
            "type": "Json",
            "widget": "JsonEditor",
            "default_value": {"color": "red"},
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

JSON editor widget on an action form

Options

This widget does not have any options.

Number input list widget

The number input list widget allows to input a list of number values.

agent.customize_collection('product').add_action('Change step values', {
    "scope": "Single",
    "form": [
        {
            "label": "Properties",
            "type": "NumberList",
            "widget": "NumberInputList",
            "placeholder": "Enter the new step value",
            "is_required": True,
            "min": 0,
            "max": 1000,
            "step": 1,
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form (once the user entered two step values):

Number input list widget on an action form

Options

Option	Type	Usage	Minimal version	Description
allow_duplicates	boolean	optional	1.3.0	Allow users to enter duplicate values.
allow_empty_values	boolean	optional	1.3.0	Allow users to enter empty values.
enable_reorder	boolean	optional	1.3.0	Allow users to reorder values.
min	number	optional	1.3.0	Minimum value allowed.
max	number	optional	1.3.0	Maximum value allowed.
placeholder	string	optional	1.3.0	Placeholder shown in the component.
step	number	optional	1.3.0	Step between two values.

Radio group widget

The radio group widget allows to select a value from a list of options.

agent.customize_collection('product').add_action('Leave a review', {
    "scope": "Single",
    "form": [
        {
            "label": "Appreciation",
            "type": "Number",
            "widget": "RadioGroup",
            "options": [
                { "value": 1, "label": "Good" },
                { "value": 0, "label": "Average" },
                { "value": -1, "label": "Bad" },
            ],
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Radio group widget on an action form

Options

Option	Type	Usage	Minimal version	Description
options	An array if values, an array of value/label pairs, or a function receiving a context object returning this shape.	required	1.3.0	List of available options in the component. Supported formats: ["Good", "Very good"] [{"value": 2, "label": "Good"}, {"value": 3, "label": "Very good"}] lambda context: ["Good", "Very good"] lambda context:[{"value": 2, "label": "Good"}, {"value": 3, "label": "Very good"}]

Using the options function, you can dynamically change the list of options based on the context, which contains information about the selected records and other values in the form. More info about dynamic configuration.

Rich text widget

The rich text widget allows to input a formatted text value.

agent.customize_collection('product').add_action('Leave a review', {
    "scope": "Single",
    "form": [
        {
            "label": "Appreciation",
            "type": "String",
            "widget": "RichText",
            "is_required": True,
            "placeholder": "Type your comment here",
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Rich text widget on an action form

Options

Option	Type	Usage	Minimal version	Description
placeholder	string	optional	1.3.0	Placeholder shown in the component.

Text area widget

The text area widget allows to input a multiline string value.

agent.customize_collection('product').add_action('Leave a review', {
    "scope": "Single",
    "form": [
        {
            "label": "Appreciation",
            "type": "String",
            "widget": "TextArea",
            "is_required": True,
            "placeholder": "Type your comment here...",
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Text area widget on an action form

Options

Option	Type	Usage	Minimal version	Description
placeholder	string	optional	1.3.0	Placeholder shown in the component.
rows	number	optional	1.3.0	Widget's height expressed as a number of rows.

Text input widget

The text input widget allows to input a string value.

agent.customize_collection('product').add_action('Send notification', {
    "scope": "Single",
    "form": [
        {
            "label": "Message",
            "type": "String",
            "widget": "TextInput",
            "placeholder": "Enter your message here",
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form:

Text input widget on an action form

Options

Option	Type	Usage	Minimal version	Description
placeholder	string	optional	1.3.0	Placeholder shown in the component.

Text input list widget

The text input list widget allows to input a list of string values.

agent.customize_collection('product').add_action('Add tags', {
    "scope": "Single",
    "form": [
        {
            "label": "Message",
            "type": "StringList",
            "widget": "TextInputList",
            "is_required": True,
            "placeholder": "Enter a tag",
            "allow_duplicates": False,
            "allow_empty_values": False,
            "enable_reorder": False,
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form (once the user entered two tags):

Text input list widget on an action form

Options

Option	Type	Usage	Minimal version	Description
allow_duplicates	boolean	optional	@1.3.0	Allow users to enter duplicate values.
allow_empty_values	boolean	optional	@1.3.0	Allow users to enter empty values.
enable_reorder	boolean	optional	@1.3.0	Allow users to reorder values.
placeholder	string	optional	@1.3.0	Placeholder shown in the component.

Time picker widget

The time picker widget allows to select a time

agent.customize_collection('store').add_action('set opening and closing time', {
    "scope": "Single",
    "form": [
        {
            "label": "Opening time",
            "type": "Time",
            "widget": "TimePicker",
        },
        {
            "label": "Closing time",
            "type": "Time",
            "widget": "TimePicker",
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form :

Time widget on an action form

time picker does not support additional options

User dropdown widget

The user dropdown widget allows to input a user or list of users from the project

agent.customize_collection('Ticket').add_action('Assign to the record', {
    "scope": "Single",
    "form": [
        {
            "label": "Manager",
            "type": "String",
            "widget": "UserDropdown",
            "placeholder": "Select the manager in charge",
        },
        {
            "label": "Operators",
            "type": "StringList",
            "widget": "UserDropdown",
            "placeholder": "Select operators for this record",
        },
    ],
    "execute": lambda context, result_builder: pass,  # perform work here
})

The above code will produce the following form (once the user has selected some users)

Dropdown widget on an action form

Options

Option	Type	Usage	Minimal version	Description
placeholder	string	optional	1.3.0	Placeholder shown in the component.