Ruby Read Csv File Line By Line

Require csv customers csv read customers csv.

Ruby read csv file line by line.

Require csv csv read favorite foods csv or you can parse a string with csv. 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 comes with a standard library called csv to make it easy to read files with comman separated values. See the example below.

Csv read method to read the complete file. We use the csv. Ruby comes with a built in csv library. This method will read the entire file and store it in the variable.

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 stores each table row as an array with each cell as a string element of the array. Close the file with the close method. If you don t know how the ruby file class works.

Read the file the whole file line by line or a specific amount of bytes. This is what a csv file looks like. Open the file with the open method. Reading csv file in ruby.

Use the file class to open a file. Here is the process in detail. 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. Read method and parse the file name as argument.

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