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Fix frontend crash when deleting announcements (#13312) 

Refactor and fix #13283, which only worked in some cases.
rebase/4.0.0rc2
ThibG 2020-03-25 22:39:55 +01:00 committed by GitHub
parent beb80adb51
commit 858d0dd168
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 2 deletions
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12
app/javascript/mastodon/features/getting_started/components/announcements.js
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@ -378,6 +378,14 @@ class Announcements extends ImmutablePureComponent {
index: 0, index: 0,
}; };
static getDerivedStateFromProps(props, state) {
if (props.announcements.size > 0 && state.index >= props.announcements.size) {
return { index: props.announcements.size - 1 };
} else {
return null;
}
}
componentDidMount () { componentDidMount () {
this._markAnnouncementAsRead(); this._markAnnouncementAsRead();
} }
@ -389,7 +397,7 @@ class Announcements extends ImmutablePureComponent {
_markAnnouncementAsRead () { _markAnnouncementAsRead () {
const { dismissAnnouncement, announcements } = this.props; const { dismissAnnouncement, announcements } = this.props;
const { index } = this.state; const { index } = this.state;
const announcement = announcements.get(index) || announcements.get(index - 1); const announcement = announcements.get(index);
if (!announcement.get('read')) dismissAnnouncement(announcement.get('id')); if (!announcement.get('read')) dismissAnnouncement(announcement.get('id'));
} }
@ -407,7 +415,7 @@ class Announcements extends ImmutablePureComponent {
render () { render () {
const { announcements, intl } = this.props; const { announcements, intl } = this.props;
const index = this.state.index < announcements.size ? this.state.index : announcements.size - 1; const { index } = this.state;
if (announcements.isEmpty()) { if (announcements.isEmpty()) {
return null; return null;