Ruby Read Csv File Line By Line

Ruby comes with a standard library called csv to make it easy to read files with comman separated values.

Ruby read csv file line by line.

If it was a simpler file we could read it line by line and use split to cut it into parts but in this file there is a field that has a comman in it. Although there are various ways to achieve the same results we will be focusing in just 2 of the possible ways read the file entirely with the read method or line by line with the foreach method. See the example below. You can read a file in ruby like this.

Ruby stores each table row as an array with each cell as a string element of the array. How to read files in ruby. You open a csv file for read write or append mode and use either or puts to append a new line. You can read a file directly.

Require csv customers csv read customers csv. Read method and parse the file name as argument. We use the csv. Close the file with the close method.

Open the file with the open method. This method will read the entire file and store it in the variable. Here is the process in detail. Id name 1 chocolate 2 bacon 3 apple 4 banana 5 almonds now you re going to learn how to use the ruby csv library to read write csv files.

This is what a csv file looks like. Use the file class to open a file. Ruby comes with a built in csv library. Ruby provides csv support in the standard library and it will help us do most of the job very quickly.

Reading csv file in ruby. Csv read method to read the complete file.