delete_a_note.md

Get caught up to this step: Check out branch 05-list-notes - see Introduction for info on how to get caught up using branches.

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# Step 6: Delete a Note

Add an Icon Button component

We're going to need a button with a delete icon that accepts a click event. Let's create a reusable component.

/imports/components/buttons/icon_btn.jsx

import React from 'react'

export const IconBtn = (props) =>
  <button
    onClick={props.handleClick}
    className="btn btn-default btn-xs"
    title={props.title}
     alt={props.title}
  >
    <span className={props.icon} aria-hidden="true"></span>
  </button>

IconBtn.propTypes = {
	handleClick: React.PropTypes.func.isRequired,
	icon: React.PropTypes.string.isRequired,
	title: React.PropTypes.string
}

Add a DeleteBtn Component

Now, we'll use the more generic IconBtn to create a delete-specific button component

/imports/components/buttons/delete_btn.jsx

import React from 'react'
import { IconBtn } from './icon_btn'

export const DeleteBtn = (props) => {

  const handleDelete = (item) => {
    const confirmDelete = confirm(props.confirmMsg)

    if (confirmDelete) {
      props.handleDelete(item)
    }
  }

  return <IconBtn handleClick={()=> handleDelete(props.itemToDelete)}
            title={props.title}
            alt={props.title}
            icon={props.icon}
          />
}

DeleteBtn.propTypes = {
  itemToDelete: React.PropTypes.object.isRequired,
	handleDelete: React.PropTypes.func.isRequired,
  confirmMsg: React.PropTypes.string,
}

DeleteBtn.defaultProps = {
  icon: "glyphicon glyphicon-remove",
  title: "Delete...",
  confirmMsg: "Really delete this?"
}

• Why the need for {() => callFunction()}? See http://stackoverflow.com/questions/33846682/react-onclick-fuction-fires-on-render (TL;DR "Because you want to pass a call to the function rather than the function directly.")

Add DeleteBtn to the list

/imports/components/lists/list.jsx

...
import { DeleteBtn } from '../buttons/delete_btn'

export const List = (props) =>{
   ...
	    	props.collection.map((item) => {
            return <li key={item._id} className="list-group-item">{item.content}
	 	      <span className="pull-right"><DeleteBtn itemToDelete={item} {...props} /></span>
	 	      </li>
           ...

Handle deletion of a note

The actual db operation is handled via our notes container.

/imports/containers/notes_container.jsx

...

export default createContainer(() => {
 ...

	const handleDelete = (note) => {
		Notes.remove({_id: note._id})
	}

  return {
    ...
	  handleDelete
  }

}, List)

• How are we able to write just handleDelete?

You should now have a delete feature included with each list item: