The dialog service enables automation of a conversation between your application and a user. The node is available as a Watson Developer Cloud contribution to Node-RED and needs to be installed.
Follow the instructions at watson contribution nodes to install the dialog node into your Bluemix instance of Node-RED. Notice : in the Watson Node-RED Boilerplate this installation have been already done.
If you are using Node-RED on Bluemix, go to your Node-RED app and click 'add a service or API' This will open a new window where you can select the Watson Dialog service. Then you click on 'Use' a screen will show which asks for a restage, click on 'yes' and wait a minute. When the application is started click on the Url to go to your Node-RED application.
The first part of the flow is to generate a list of the available dialogs.
Copy an inject node.
Feed the output from the inject node to a dialog node.
Configure the mode for the dialog node to list the available dialogs.
Send the output to a debug node.
The list is available at msg.dialog.
If you haven't registered any dialogs then the output list will be empty.
Either follow Dialog Template Creation or use the dialog tool dialog tool to register your dialogs.
Once you have registered dialogs, then they will show up.
Make a node of the dialog IDs you will need these for the next step.
When the dialog ID is known, a conversation can be started.
Add a new inject node.
Configure the input to send a string as the conversation starter.
Add a new dialog node.
Configure the node to start the conversation, setting the dialog id.
Send the output to a debug node.
The salutation response from the dialog is available at msg.dialog.
The salutation response from the dialog is available at msg.dialog.
Make a note of the client ID and the converstaion ID. You will need these to continue the conversation.
With the client ID and conversation ID dialog ID you can continue a conversation, the state and properties will be remembered by the service.
Add a new inject node.
Add a new dialog node, setting the mode, dialog ID, client ID, and conversation ID.
Send the output to a debug node.
Where you will be able to see the response from the dialog service.
This mode enables you to delete a Dialog given its Dialog ID. To do so, just add the Dialog ID in the node configuration.
Send the output to a debug node
This mode enables you to delete all Dialogs associated to the underlying Watson Dialog service instance. Use it with caution as the deletion is permanent
Send the output to a debug node
- Dialog Flow : illustrates all availables Dialog Node Modes, and proposes an automated Simulation of a Dialog Creation, Starting and following a Conversation.
Notice : you can also use Dropbox instead of using the HTTP Request node : How to setup your Node-RED with Dropbox nodes