In RethinkDB, what is the easiest way to check if a database or a table exists?

Question

One way I know I can do it is by listing throughdbList() and tableList() and then looking for what I want in the results.

Is there an easier wa

Answer 1

For the table existing checking I have found the following solution:

r.tableList().run(connection); //['people']

this will give you back an array of the tables which are defined on the default DB for example: ['people']. (if you want to set it do this: connection.use('test');)

then we can check if the array is containing our table name to create.

_.some(tableNames, tableName)

put it all together:

  if (!_.isNil(tableName) && _.isString(tableName) && !_.isNil(connection)) {
    r.tableList().run(connection).then(function(tableNames) {
      if (_.includes(tableNames, tableName)) {
        return r.tableCreate(tableName).run(connection);
      } else {
        return;
        }
    });
  }