Adding and Removing items

I’m trying to add and remove items from the lists, using onClick on buttons. Doing Add was easy using the SortableComponent, but I don’t know how to use remove because SortableList and SortableItem are functions not classes to add a method(code below and attached file). I’m just starting working, with React ES6, maybe is something that I don’t understand.

Thanks.

const SortableList = SortableContainer(({items}) => {
    return (
        <table>
            {items.map((value, index) =>
            <tr>
                <td>
                <SortableItem key={`item-${index}`} index={index} value={value} />
                    </td>
                    <td>
                    <button>Remove{index}</button>
                </td>
             </tr>
            )}
        </table>
    );
});

class SortableComponent extends React.Component{
     constructor(props) {
         super(props);
         this.state = {items: [1, 2, 3, 4]};
         this.onSortEnd = this.onSortEnd.bind(this);
         this.add = this.add.bind(this);
     }


    onSortEnd({oldIndex, newIndex}) {
        this.setState({items: arrayMove(this.state.items, oldIndex, newIndex)});
    }


    add() {
        const items = this.state.items;
        let new_item = this.state.items.length+1;
        items.push(new_item);
        this.setState({items : items})
        console.log(new_item);
    }

    render() {
        return (
            <div>
                <SortableList items={this.state.items} onSortEnd={this.onSortEnd} />
                <button onClick={this.add}>Add Document</button>
            </div>
        );
    }
}

[benbonnet]

@badaljain encountered the very same problem, solved it by specifying another ‘index’ prop :

const SortableItem = SortableElement(({idx, node, onRemove}) =>
  <li onClick={() => onRemove(idx)}>
    <DragHandle />
    {node.title}{idx}
  </li>
);
const SortableList = SortableContainer(({items, onRemove}) => {
  return (
    <ul>
      {items.map( function(node, index){
        console.log(index)
        return(<SortableItem key={`item-${index}`} index={index} idx={index} node={node} onRemove={onRemove} />)
      })}
    </ul>
  );
});

quite ugly compared to the original solution, not exactly sure why the index prop was not going though, but this way it works.

[bciach]

Solved my issue