Active admin CSV export custom query scoped - ruby-on-rails

Question

Am using active admin Export CSV option. Its returning all the values related to the particular table.
I want the reports only for a particular month.
Can anyone help?

Answer 1

you can write own csv exporter
collection_action :download_report, :method => :get do
users = User.where('created_at >= ?', Date.today - 1.month)
csv = CSV.generate( encoding: 'Windows-1251' ) do |csv|
# add headers
csv < [ #Some header ]
# add data
users.each do |user|
csv << [ user.created_at ]
end
end
# send file to user
send_data csv.encode('Windows-1251'), type: 'text/csv; charset=windows-1251; header=present', disposition: "attachment; filename=report.csv"
end
action_item only: :index do
link_to('csv report'), params.merge(:action => :download_report))
end
index :download_links => false do
# off standard download link
end
this is just example for you. Your code can be another

Answer 2

for generation csv file use this code where you want
# generate csv file of photo
def self.generate_csv
header = []
csv_fname = "#{CSV_FILE_PATH}/images.csv"
options = {headers: :first_row}
photo_columns = column_names - ["id", "updated_at"]
photo_columns.map{|col| col == "created_at" ? header << "ScrapeDate" : header << col.classify}
CSV.open(csv_fname, "w", options ) do |csv|
csv << header if File.exist?(csv_fname) && File.size(csv_fname) == 0
find_each(batch_size: 5000) do |photo|
csv << photo.attributes.values_at(*photo_columns)
end
end
end
in above code which column you don't want subtract that cols from actual cols, for example column_names - ["id", "updated_at"] here column_names return actual cols array and which cols we don't need we subtract them.