Learning management systems (LMS) generate large amounts of data. The LMS Moodle is at the forefront of open source learning platforms, and thanks to its widespread adoption by schools and businesses, it represents a great target for educational data-analytic efforts. In order to facilitate data analysis of Moodle data in R, we introduce a new R package: moodler. It is a collection of useful SQL queries and data-wrangling functions that fetch data from Moodle database and turn it into tidy data frames. This makes it easy to feed data from Moodle to a large number of R packages that focus on specific types of analyses.