Ruby Read Csv File Line By Line

Reading csv file in ruby.

Ruby read csv file line by line.

Read method and parse the file name as argument. You open a csv file for read write or append mode and use either or puts to append a new line. Open the file with the open method. If you don t know how the ruby file class works.

Ruby comes with a standard library called csv to make it easy to read files with comman separated values. 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. This method will read the entire file and store it in the variable. This is what a csv file looks like.

Require csv csv read favorite foods csv or you can parse a string with csv. See the example below. Ruby stores each table row as an array with each cell as a string element of the array. Require csv customers csv read customers 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 provides csv support in the standard library and it will help us do most of the job very quickly. Use the file class to open a file. You can read a file directly.

We use the csv. Here is the process in detail. You can read a file in ruby like this. Read the file the whole file line by line or a specific amount of bytes.

Close the file with the close method. Ruby comes with a built in csv library.