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[Glitch] Fix frontend crash when deleting announcements 

Port 858d0dd168 to glitch-soc

Signed-off-by: Thibaut Girka <thib@sitedethib.com>
remotes/1727458204337373841/tmp_refs/heads/signup-info-prompt
ThibG 2020-03-25 22:39:55 +01:00 committed by Thibaut Girka
parent 60338b2bee
commit faa56643b8
1 changed files with 10 additions and 2 deletions
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12
app/javascript/flavours/glitch/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;