Sha256: b4903dc4e9430f07e247838f654de52c7adb6f18f801de3d1161b03dec65ad2e
Contents?: true
Size: 1.7 KB
Versions: 10
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Stored size: 1.7 KB
Contents
# -*- coding: utf-8 -*-
# Comma Separated Values extensions
class CSV
# @return [Hash<String,String>] HTTP headers for a typical CSV file download without caching.
#
# ==Options
# - filename: defaults to "data.csv"
# - request: the incoming http request, which is used to return MSIE-specific headers
#
# @example
# headers = CSV.http_headers("myfile.csv")
#
# @example for Rails
# response.headers.merge CSV.http_headers("myfile.csv")
#
# Ideas from http://stackoverflow.com/questions/94502/in-rails-how-to-return-records-as-a-csv-file/94520
def self.http_headers(options={})
filename = options[:filename] || 'data.csv'
options=self.http_headers_adjust_for_broken_msie(options)
content_type = options[:content_type] || 'text/csv'
return options[:cache] \
? {
'Content-Type' => content_type,
'Content-Disposition' => "attachment; filename=\"#{filename}\"",
} \
: {
'Content-Type' => content_type,
'Cache-Control' => 'no-cache, must-revalidate, post-check=0, pre-check=0',
'Expires' => "0",
'Pragma' => 'no-cache',
'Content-Disposition' => "attachment; filename=\"#{filename}\"",
}
end
# Helper to try to "do the right thing" for the common case of Rails & MS IE.
#
# Rails automatically defines a _request_ object,
# that has an env HTTP_USER_AGENT.
#
# @return [Hash<String,String>] HTTP headers
def self.http_headers_adjust_for_broken_msie(options={})
request = options[:request] || request
msie = (request and request.env['HTTP_USER_AGENT'] =~ /msie/i)
if msie
options[:content_type]||='text/plain'
options[:cache]||=false
end
return options
end
end
Version data entries
10 entries across 10 versions & 1 rubygems