This is the official documentation of the forestadmin-agent-django and forestadmin-agent-flask Python agents.
Actions can be configured to achieve different results in the GUI.
Most actions will simply perform work and display the default notification, however, other behaviors are possible:
(for instance to trigger a login in a third-party application)
Default behavior
The default behavior, when no exception is thrown in the handler is to display a generic notification.
from typing import Union
from forestadmin.datasource_toolkit.decorators.action.result_builder import ResultBuilder
from forestadmin.datasource_toolkit.decorators.action.context.single import ActionContextSingle
from forestadmin.datasource_toolkit.interfaces.actions import ActionResult
import requests
async def execute(
context: ActionContextSingle, result_builder: ResultBuilder
) -> Union[None, ActionResult]:
# Not using the resultBuilder here will display the generic success notification.
# (as long as no exception is thrown)
agent.customize_collection("Company").add_action("Mark as live", {
"scope": "Single",
"execute": execute,
})
Custom notifications
When customizing the notification message, you can use the to generate different types of responses.
from typing import Union
from forestadmin.datasource_toolkit.decorators.action.result_builder import ResultBuilder
from forestadmin.datasource_toolkit.decorators.action.context.single import ActionContextSingle
from forestadmin.datasource_toolkit.interfaces.actions import ActionResult
async def execute(
context: ActionContextSingle, result_builder: ResultBuilder
) -> Union[None, ActionResult]:
is_not_live_company = # Company is not live
if is_not_live_company:
return result_builder.success("Company is now live!")
else:
return result_builder.error("The company was already live!")
agent.customize_collection("Company").add_action("Mark as live", {
"scope": "Single",
"execute": execute,
})
HTML result
You can also return an HTML page to give more feedback to the user who triggered the Action.
from typing import Union
from forestadmin.datasource_toolkit.decorators.action.result_builder import ResultBuilder
from forestadmin.datasource_toolkit.decorators.action.context.single import ActionContextSingle
from forestadmin.datasource_toolkit.interfaces.actions import ActionResult
async def execute(
context: ActionContextSingle, result_builder: ResultBuilder
) -> Union[None, ActionResult]:
# ... charge the credit card ...
record = context.get_record(['amount', 'source:last4'])
if credit_card_successfully_charged:
return result_builder.success(
'<p class="c-clr-1-4 l-mt l-mb">{record["amount"] / 100} USD has been '
+ 'successfully charged.</p>'
+ '<strong class="c-form__label--read c-clr-1-2">Credit card</strong>'
+ '<p class="c-clr-1-4 l-mb">**** **** **** {record["source"]["last4"]} '
+ '</p>',
{"type": "html"}
)
else:
return result_builder.error(
'<p class="c-clr-1-4 l-mt l-mb">{record["amount"] / 100} USD has not '
+ 'been charged.</p>'
+ '<strong class="c-form__label--read c-clr-1-2">Credit card</strong>'
+ '<p class="c-clr-1-4 l-mb">**** **** **** {$record["source"]["last4"]}'
+ '</p>'
+ '<strong class="c-form__label--read c-clr-1-2">Reason</strong>'
+ '<p class="c-clr-1-4 l-mb">You can not charge this credit card. The '
+ 'card is marked as blocked</p>',
{"type": "html"}
)
agent.customize_collection("Company").add_action("Charge credit card", {
"scope": "Single",
"execute": execute,
})
File generation
Because of technical limitations, Smart Actions that generate files should be flagged as such with the generateFile option.
This will cause the GUI to download the output of the action, but will also prevent from being able to use the resultBuilder to display notifications, errors, or HTML content.
Smart actions can be used to generate or download files.
The example code below will trigger a file download (with the file named filename.txt, containing StringThatWillBeInTheFile using text/plain mime-type).
from typing import Union
from forestadmin.datasource_toolkit.decorators.action.result_builder import ResultBuilder
from forestadmin.datasource_toolkit.decorators.action.context.single import ActionContextSingle
from forestadmin.datasource_toolkit.interfaces.actions import ActionResult
async def execute(
context: ActionContextSingle, result_builder: ResultBuilder
) -> Union[None, ActionResult]:
return result_builder.file(
io.BytesIO("StringThatWillBeInTheFile"
).encode("utf-8"), "filename.txt", "text/plain")
agent.customize_collection("Company").add_action("Download a file", {
"scope": "Single",
"generate_file": True,
"execute": execute,
})
Redirections
To streamline your operation workflow, it could make sense to redirect to another page after an Action has successfully been executed.
It is possible using the redirectTo function.
The redirection works both for internal (\*.forestadmin.com pages) and external links.
from typing import Union
from forestadmin.datasource_toolkit.decorators.action.result_builder import ResultBuilder
from forestadmin.datasource_toolkit.decorators.action.context.single import ActionContextSingle
async def execute(
context: ActionContextSingle, result_builder: ResultBuilder
) -> Union[None, ActionResult]:
return result_builder.redirect(
"/MyProject/MyEnvironment/MyTeam/data/20/index/record/20/108/activity"
)
agent.customize_collection("Company").add_action("Mark as live", {
"scope": "Single",
"execute": execute,
})
from typing import Union
from forestadmin.datasource_toolkit.decorators.action.result_builder import ResultBuilder
from forestadmin.datasource_toolkit.decorators.action.context.single import ActionContextSingle
from forestadmin.datasource_toolkit.interfaces.actions import ActionResult
async def execute(
context: ActionContextSingle, result_builder: ResultBuilder
) -> Union[None, ActionResult]:
return result_builder.redirect(
"https://www.royalmail.com/portal/rm/track?trackNumber=ZW924750388GB"
)
agent.customize_collection("Company").add_action("Mark as live", {
"scope": "Single",
"execute": execute,
})
Webhooks
After an action you can set up an HTTP (or HTTPS) callback - a webhook - to forward information to other applications.
Note that the webhook will be triggered from the user's browser, so it will be subject to CORS restrictions.
Its intended use is often to perform a login on a third-party application or to trigger a background job on the current user's behalf.
from typing import Union
from forestadmin.datasource_toolkit.decorators.action.context.single import ActionContextSingle
from forestadmin.datasource_toolkit.decorators.action.result_builder import ResultBuilder
from forestadmin.datasource_toolkit.interfaces.actions import ActionResult
async def execute(
context: ActionContextSingle, result_builder: ResultBuilder
) -> Union[None, ActionResult]:
return result_builder.webhook(
"http://my-company-name", # The url of the company providing the service.
"POST", # The method you would like to use (typically a POST).
{}, # You can add some headers if needed.
{"adminToken": "your-admin-token"} # A body to send to the url.
)
agent.customize_collection("Company").add_action("Mark as live", {
"scope": "Single",
"execute": execute,
})
Please note that the webhook function and the setHeader function operate independently and do not modify the same HTTP call. Webhook headers will be sent along with the webhook call, while setHeaders will modify directly the Action response headers.
Response headers
Sometimes you may want to setup custom response headers after action execution, the set_header function is here to reach out this goal.
Before executing any end function described above, you should be able to add headers to the action response like the exemple below.
from forestadmin.datasource_toolkit.decorators.action.context.single import ActionContextSingle
from forestadmin.datasource_toolkit.decorators.action.result_builder import ResultBuilder
from forestadmin.datasource_toolkit.interfaces.actions import ActionResult
async def execute(
context: ActionContextSingle, result_builder: ResultBuilder
) -> Union[None, ActionResult]:
return result_builder.set_header("myHeaderName", "myHeaderValue").redirect(
"https://www.royalmail.com/portal/rm/track?trackNumber=ZW924750388GB"
)
agent.customize_collection("companies").add_action("Mark as live", {
"scope": "Single",
"execute": execute
})
