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function createUser(username, callback) { | |
var connection = DatabaseClient.connect(); | |
var users = connection.call('collection', 'users'); | |
var query = users.call('query', {username: username}); | |
return query.then(function(existing){ | |
if(existing) throw new Error("User already exists: " + username); | |
else return users.call('create', {username: username}); | |
}).fin(function(connection){ return connection.call('close'); }); | |
} |
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async function createUser(username, callback) { | |
var connection = await DatabaseClient.connect(); | |
try{ | |
var users = await connection.collection('users'); | |
var query = await users.query({username: username}); | |
if(query){ | |
throw new Error("User already exists: " + username); | |
} else { | |
return await users.create({username: username}); | |
} | |
} finally { | |
connection.close(); | |
} | |
} |
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function createUser(username, callback) { | |
return DatabaseClient.connect().then(function(connection) { | |
return connection.collection('users').then(function(users) { | |
return users.query({username: username}).then(function(existing) { | |
if (existing) { | |
callback("User already exists: " + username); | |
} else { | |
return users.create({username: username}).then(function (user) { | |
callback(null, user); | |
}); | |
} | |
}); | |
}).fin(connection.close); | |
}).catch(callback); | |
} |
async function createUser(username, callback) {
const connection = await DatabaseClient.connect();
try {
const users = await connection.collection('users');
const query = await users.query({ username });
if (query) { throw new Error(`User already exists: ${username}`); }
return await users.create({ username });
} finally {
connection.close();
}
}
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I would have written it this way: