How to know from which block is the selected component generated ?

You should think more about components than blocks, indeed the right Block should look more like that.

editor.BlockManager.add('block-id',  {
    label: ...
    content: { type: 'component-id' },
})

But in case you need it, you can always attach custom properties to your content block (which then will be appended to the component)

editor.BlockManager.add('block-id',  {
    label: ...
    content: { type: 'component-id', fromBlock: 'block-id'  },
})

Once that block is dropped you will always be able to get that property component.get('fromBlock')

Thanks for reporting this, @amliu.

Great question about [Question] How to know from which block is the selected component generated ?. The recommended approach with Components is to use the event-driven API.

Start here:

1. Check the GrapesJS documentation for your specific module
2. Look for the on() event listener method
3. Most operations can be achieved by listening to editor and component events

Common patterns:

// Listen for changes
editor.on('change', () => console.log('something changed'));

// Component lifecycle
editor.on('component:mount', (c) => console.log('component ready', c));
editor.on('component:update', (c) => console.log('component updated', c));

If you're still stuck:

• Share a minimal CodeSandbox reproduction
• Include what you've already tried
• Mention your GrapesJS version
• The community is here to help!