Ruby Read Csv File Line By Line

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.

Ruby read csv file line by line.

Reading csv file in ruby. You can read a file in ruby like this. If you don t know how the ruby file class works. Use the file class to open a file.

Csv read method to read the complete file. We use the csv. You can read a file directly. Require csv customers csv read customers csv.

See the example below. This is what a csv file looks like. Ruby stores each table row as an array with each cell as a string element of the array. 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.

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. You open a csv file for read write or append mode and use either or puts to append a new 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.

Ruby comes with a standard library called csv to make it easy to read files with comman separated values. Here is the process in detail. This method will read the entire file and store it in the variable. Open the file with the open method.

Close the file with the close method. Require csv csv read favorite foods csv or you can parse a string with csv.