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use Mojolicious::Lite; | |
use Mojo::Pg; | |
helper pg => sub { state $pg = Mojo::Pg->new('postgresql://test:test@/test') }; | |
get '/' => 'chat'; | |
websocket '/channel' => sub { | |
my $c = shift; | |
$c->inactivity_timeout(3600); | |
# Forward messages from the browser to PostgreSQL | |
$c->on(message => sub { shift->pg->pubsub->notify(mojochat => shift) }); | |
# Forward messages from PostgreSQL to the browser | |
my $cb = $c->pg->pubsub->listen(mojochat => sub { $c->send(pop) }); | |
$c->on(finish => sub { shift->pg->pubsub->unlisten(mojochat => $cb) }); | |
}; | |
app->start; | |
__DATA__ | |
@@ chat.html.ep | |
%= javascript 'https://cdnjs.cloudflare.com/ajax/libs/vue/2.0.5/vue.js' | |
<div id="chat"> | |
Username: <input v-model="username"><br> | |
Send: <input @keydown.enter="send" v-model="current"><br> | |
<div id="log"><p v-for="m in messages">{{m.username}}: {{m.message}}</p></div> | |
</div> | |
<script> | |
var ws = new WebSocket('<%= url_for('channel')->to_abs %>'); | |
var vm = new Vue({ | |
el: '#chat', | |
data: { | |
current: '', | |
messages: [], | |
username: '', | |
}, | |
methods: { | |
send: function() { | |
ws.send(JSON.stringify({username: this.username, message: this.current})); | |
this.current = ''; | |
}, | |
}, | |
}); | |
ws.onmessage = function (e) { vm.messages.push(JSON.parse(e.data)) }; | |
</script> |
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This is a version of https://gist.github.com/jberger/c4515eb8399f356736528dbc5af115f2 which uses richer data formatting (read: JSON)