Author.count
isn’t really needed, unless you need the count. See findOrCreate().
With findOrCreate()
you could have the following. (Edited trex005’s snippet for this)
async.eachSeries(authors, function(item, callback) {
Author.sync().then(function() {
Author.findOrCreate({
where: {
name: item.trim()
},
defaults: { // set the default properties if it doesn't exist
name: item.trim()
}
}).then(function(result) {
var author = result[0], // the instance of the author
created = result[1]; // boolean stating if it was created or not
if (!created) { // false if author already exists and was not created.
console.log('Author already exists');
}
console.log('Created author...');
callback();
});
})
})