Confirm navigation when it would discard unsaved changes
- New state field: `state.entryDraft.hasChanged`, initialized to `false`. - `state.entryDraft.hasChanged` set to `true` in `entryDraft` reducer for `DRAFT_CHANGE_FIELD`. - `EntryPage` adds a `listenBefore` listener to `history` on `componentDidMount` that checks `this.props.entryDraft.hasChanged` and, if that is true, asks the user to confirm the navigation. - `EntryPage` removes its listener on `componentWillUnmount`.
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@ -1,6 +1,7 @@
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import React, { PropTypes } from 'react';
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import ImmutablePropTypes from 'react-immutable-proptypes';
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import { connect } from 'react-redux';
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import history from '../routing/history';
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import {
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loadEntry,
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createDraftFromEntry,
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@ -49,6 +50,13 @@ class EntryPage extends React.Component {
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} else {
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loadEntry(collection, slug);
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}
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this.unlisten = history.listenBefore((location) => {
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if (this.props.entryDraft.get('hasChanged')) {
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return "Are you sure you want to leave this page?";
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}
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return true;
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});
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}
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componentWillReceiveProps(nextProps) {
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@ -63,6 +71,7 @@ class EntryPage extends React.Component {
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componentWillUnmount() {
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this.props.discardDraft();
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this.unlisten();
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}
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createDraft = (entry) => {
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