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to_csv plugin

This simple plugin gives you the ability to call to_csv to a collection of activerecords. The builder options are the same as to_json / to_xml, except for the :include.

Usage

@users = User.all

#
# defaults are export headers and all fields
#

@users.to_csv
@users.to_csv(:only => [:last_name, :role])
@users.to_csv(:headers => false)
@users.to_csv(:except => [:last_name, :role])
@users.to_csv(:except => :role, :methods => :admin?)

Real life example

In the controller where you want to export to csv, add the format.csv line (as of rails 2.1 it is not necessary to register the csv myme_type)

class UserController < ApplicationController

def index @users = User.all

respond_to do |format| format.html format.xml { render :xml => @users } format.csv { send_data @users.to_csv } end end

def show… def new… def edit… def create… def update… def destroy…

end

Dependencies

sudo gem install fastercsv

Install

./script/plugin install git://github.com/arydjmal/to_csv.git

Ideas

I got ideas and influence from Mike Clarks recipe #35 in Rails Recipes book, some anonymous pastie, and whoever wrote to_xml/to_json builders.

Note

Does not work on a single activerecord, ie, User.first.to_csv.

Copyright © 2008 Ary Djmal, released under the MIT license