I can't set timezone on Rails using its abbreviation, for example:
>> Time.zone = 'BRT'
ArgumentError: Invalid Timezone: BRT
from /home/braulio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-3.2.21/lib/active_support/core_ext/time/zones.rb:61:in `rescue in find_zone!'
from /home/braulio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-3.2.21/lib/active_support/core_ext/time/zones.rb:53:in `find_zone!'
from /home/braulio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-3.2.21/lib/active_support/core_ext/time/zones.rb:37:in `zone='
from (irb):14
from /home/braulio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-3.2.21/lib/rails/commands/console.rb:47:in `start'
from /home/braulio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-3.2.21/lib/rails/commands/console.rb:8:in `start'
from /home/braulio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-3.2.21/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
This is necessary as some systems (android and some browsers) report timezone using the abbreviation.
The list of abbreviations can be found at http://en.wikipedia.org/wiki/List_of_time_zone_abbreviations
jstimezone was reporting timezone using abbreviations. It is also quite buggy and unmaintained (https://bitbucket.org/pellepim/jstimezonedetect/issues?status=new&status=open). It is simpler to just use standard javascript:
var offset = - new Date().getTimezoneOffset()/60
Then call on document ready:
$.cookie("browser.tzoffset", offset, { expires: 30, path: '/' })
Then in rails use around_filter in ApplicationController:
def set_time_zone
return yield unless (utc_offset = cookies['browser.tzoffset']).present?
utc_offset = utc_offset.to_i
gmt_offset = if utc_offset == 0 then nil elsif utc_offset > 0 then -utc_offset else "+#{-utc_offset}" end
Time.use_zone("Etc/GMT#{gmt_offset}"){ yield }
rescue ArgumentError
yield
end
This localizes all dates for users, independently where he/she is. In Brazil we have multiple timezones, for example.
PS: ActiveSupport::TimeZone[utc_offset.to_i] can't be used as it uses DST, see https://github.com/rails/rails/issues/20504
PS: You can also use moment: moment.parseZone(Date.now()).utcOffset()/60 or moment().format('zz')
You don't have to use around_filter.
Put this in before_action
Time.zone = "Etc/GMT#{gmt_offset}"
(Time.zone is thread local. It's safe to change.)
Related
I generated a simple script that on other occasions has worked for me, but this is because the amount of information in the loop generates a NoMemoryError error.
I have 16 GB of memory and also a lot of virtual memory available. When I perform the test, the RAM memory is completely filled.
The script is:
require 'rest-client'
require 'json'
require 'open-uri'
require 'csv'
def self.qos7705egressdiscard_summary
xml = File.read("#{Rails.root}/public/Discard_qos7705egress.xml")
data = RestClient.post("http://10.140.255.1:8080/xmlapi/invoke", xml,{:"Content-Type" => 'application/soap+xml'})
data_parsed = Hash.from_xml(data)
return data_parsed
end
def self.samqos7705egressdiscardtotal_table
tabletotal = Hash.new
data_stats = qos7705egressdiscard_summary['Envelope']['Body']['findResponse']['result']['service.SapEgrQosQueueStatsLogRecord']
data_stats.map do |qosdiscard_device|
#devicetotal = qosdiscard_device["monitoredObjectSiteName"]
#servicetotal = qosdiscard_device["monitoredObjectPointer"]
#porttotal = qosdiscard_device["displayedName"]
#queueIdtotal = qosdiscard_device["queueId"]
#discardinproftotal = qosdiscard_device["droppedInProfOctets"].to_i
#discardoutproftotal = qosdiscard_device["droppedOutProfOctets"].to_i
time_unixtotal = (qosdiscard_device["timeCaptured"]).to_i/1000
#timeCapturedtotal = Time.at(time_unixtotal).strftime("%B %e, %Y at %I:%M %p")
#discardtotal = #discardinproftotal + #discardoutproftotal
#device_int_stats_total = (#devicetotal+#porttotal+#queueIdtotal).to_s
hash = Hash[devicetotal: #devicetotal, servicetotal: #servicetotal, porttotal: #porttotal, queueIdtotal: #queueIdtotal, discardtotal: #discardtotal, device_int_stats_total: #device_int_stats_total, timeCapturedtotal: #timeCapturedtotal, time_unixtotal: time_unixtotal]
tabletotal << hash
#tabletotal.write(hash)
end
end
The exact error is:
NoMemoryError: failed to allocate memory
from /usr/local/lib/ruby/2.2.0/irb/inspector.rb:108:in `inspect'
from /usr/local/lib/ruby/2.2.0/irb/inspector.rb:108:in `block in <module:IRB>'
from /usr/local/lib/ruby/2.2.0/irb/inspector.rb:101:in `call'
from /usr/local/lib/ruby/2.2.0/irb/inspector.rb:101:in `inspect_value'
from /usr/local/lib/ruby/2.2.0/irb/context.rb:383:in `inspect_last_value'
from /usr/local/lib/ruby/2.2.0/irb.rb:661:in `output_value'
from /usr/local/lib/ruby/2.2.0/irb.rb:490:in `block (2 levels) in eval_input'
from /usr/local/lib/ruby/2.2.0/irb.rb:623:in `signal_status'
from /usr/local/lib/ruby/2.2.0/irb.rb:486:in `block in eval_input'
from /usr/local/lib/ruby/2.2.0/irb/ruby-lex.rb:245:in `block (2 levels) in each_top_level_statement'
from /usr/local/lib/ruby/2.2.0/irb/ruby-lex.rb:231:in `loop'
from /usr/local/lib/ruby/2.2.0/irb/ruby-lex.rb:231:in `block in each_top_level_statement'
from /usr/local/lib/ruby/2.2.0/irb/ruby-lex.rb:230:in `catch'
from /usr/local/lib/ruby/2.2.0/irb/ruby-lex.rb:230:in `each_top_level_statement'
from /usr/local/lib/ruby/2.2.0/irb.rb:485:in `eval_input'
from /usr/local/lib/ruby/2.2.0/irb.rb:395:in `block in start'
from /usr/local/lib/ruby/2.2.0/irb.rb:394:in `catch'
from /usr/local/lib/ruby/2.2.0/irb.rb:394:in `start'
from /usr/local/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/console.rb:110:in `start'
from /usr/local/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/console.rb:9:in `start'
from /usr/local/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:68:in `console'
from /usr/local/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /usr/local/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'Maybe IRB bug!
On line 25 I added this tabletotal.write (hash) to be able to write it on disk and not in memory but I got the following error:
NoMethodError: undefined method `write' for {}:Hash
What is the problem here? Also how can I fix it?
Start by making it less cr*p:
def extract_data(input)
{
devicetotal: input["monitoredObjectSiteName"],
servicetotal: input["monitoredObjectPointer"],
porttotal: input["displayedName"],
queueIdtotal: input["queueId"],
discardinproftotal: input["droppedInProfOctets"].to_i,
discardoutproftotal: input["droppedOutProfOctets"].to_i,
time_unixtotal: input["timeCaptured"].to_i/1000
}.tap do |h|
h[:timeCapturedtotal] = Time.at(h[:time_unixtotal]).strftime("%B %e, %Y at %I:%M %p"),
h[:discardtotal] = h[:discardinproftotal] + h[:discardoutproftotal]
h[:device_int_stats_total] =(h[:devicetotal]+h[:porttotal]+h[:queueIdtotal]).to_s
end
end
This method is really easy to test since you just insert input and write assertions about the output.
If you want to map and apply this to the input array you would do:
data_stats.map(&:extract_data)
Your code tries to output a hash but uses the shovel operator like on a array. You need to decide if the appropiate output is an array or a hash.
I need all those variables because I use them in a html in table
format.
This won't work - the instance variables will only contain the values from the last element as they get overwritten in each iteration.
You instead need to iterate over an array of hashes or objects in the view:
<% #stats.each do |s| %>
<tr>
<td><%= s[:devicetotal] %></td>
# ...
</tr>
<% end %>
If you really want to use instance varibles you need to create a object instance for each element:
class DataStat
include ActiveModel::AttributeAssignment
attr_accessor :devicetotal, :servicetotal # ...
def self.from_import(input)
self.new(
devicetotal: input["monitoredObjectSiteName"],
servicetotal: input["monitoredObjectPointer"],
# ...
)
end
end
#stats = data_stats.map { |ds| DataStat.from_import(ds) }
You also need to deal with the issue that you´re running out of memory since you are just slop converting the whole XML document into a Ruby hash. You need to parse it with Nokogiri instead and extract what you actually need.
I have the following written in ruby
t = Time.now
t.strftime("%Y-%d-%m")
SCHEDULER.every '1m', :first_in => 0 do |job|
send_event('gmail_gh', {current: gmail.inbox.count(:after => Date.parse(t)), older: gmail.inbox.count})
But i get this error
scheduler caught exception:
can't convert Time into String
/var/dashing/cdmdash/jobs/gmail_gh.rb:21:in `parse'
/var/dashing/cdmdash/jobs/gmail_gh.rb:21:in `block in <top (required)>'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rufus-scheduler-2.0.17/lib/rufus/sc/jobs.rb:231:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rufus-scheduler-2.0.17/lib/rufus/sc/jobs.rb:231:in `trigger_block'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rufus-scheduler-2.0.17/lib/rufus/sc/jobs.rb:191:in `block in trigger'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rufus-scheduler-2.0.17/lib/rufus/sc/scheduler.rb:416:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p327/gems/rufus-scheduler-2.0.17/lib/rufus/sc/scheduler.rb:416:in `block in trigger_job'
I think it has something to do with the t variable and it not being a truing, I am new to Ruby so I am abit stuck
If you look at the gem documentation, you will see that the :after and :before params take in a date in the format of YYYY-MM-DD.
From the gem Readme:
gmail.inbox.count(:after => Date.parse("2010-02-20"), :before => Date.parse("2010-03-20"))
gmail.inbox.count(:on => Date.parse("2010-04-15"))
Your code is passing in YYYY-DD-MM which is likely causing the error.
Edit
When you call strftime on a datetime object, it doesn't modify the object - only returns the string notation based on format you give.
As a result, the Date.parse(t) is still getting Time.now was a parameter.
Try this:
t = Time.now.strftime("%Y-%m-%d")
Date.parse(t)
I want to create a query that will return all Alerts that have a start time before "right now" and an end time after "right now", and I only care about what time of day it is, not what date it is.
I would have thought this would work
Alert.find(:all, :conditions => [" ? between ? AND ?", Time.now, :start, :end])
However it does not because this query concerns itself with calendar dates, not just time of day.
I found ".to_s(:time)" but when I add that I get an error.
Alert.find(:all, :conditions => [" ? between ? AND ?", Time.now.to_s(:time), :start.to_s(:time), :end.to_s(:time)])
Alert.find(:all, :conditions => [" ? between ? AND ?", Time.now.to_s(:time), :start.to_s(:time), :end.to_s(:time)])
ArgumentError: wrong number of arguments(1 for 0)
from (irb):48:in `to_s'
from (irb):48
from /home/chris/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands/console.rb:47:in `start'
from /home/chris/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands/console.rb:8:in `start'
from /home/chris/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands.rb:41:in `'
from script/rails:6:in `require'
from script/rails:6:in `'
How can I find all the of alerts that are active right now, based on now being between the start and end time of the Alert, irrespective of the calendar date of the start and end time? I am not currently thinking about time zones but will in the future.
This question represents a bug in ActiveRecord when using sqlite. The solution to this is to switch to mysql. More info here: https://github.com/rails/rails/issues/6247#issuecomment-5679856
I have some time defined from my database, and this is how it looks:
ruby-1.9.2-p290 :017 > djel.smjena.pocetak1.to_time
=> 2000-01-01 08:00:00 +0100
and that is ok, it assigned me 2000-1-1
also, I got something that happened in some datetime
ruby-1.9.2-p290 :019 > dog.pocetak
=> Thu, 25 Aug 2011 08:18:00 UTC +00:00
So I was hoping, that .to_time would ditch my date, but that does not
happen
ruby-1.9.2-p290 :020 > dog.pocetak.to_time
=> Thu, 25 Aug 2011 08:18:00 UTC +00:00
so, now, comparing if something happened before 8:00 is useless.
So, how can I compare that? is there a way to set dog.pocetak to
2000-01-01 without touch clock?
thank you
p.s. also, I thought of creating new time variable, only to get from old variable hours and minutes, but this methods dont work?
ruby-1.9.2-p290 :059 > dog.pocetak.hour
=> 8
but
ruby-1.9.2-p290 :060 > dog.pocetak.minute
NoMethodError: undefined method `minute' for 2011-08-25 08:18:00 UTC:Time
from /home/dorijan/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.0.10/lib/active_support/time_with_zone.rb:322:in `method_missing'
from (irb):60
from /home/dorijan/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands/console.rb:44:in `start'
from /home/dorijan/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands/console.rb:8:in `start'
from /home/dorijan/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands.rb:23:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
ruby-1.9.2-p290 :061 > dog.pocetak.minutes
NoMethodError: undefined method `minutes' for 2011-08-25 08:18:00 UTC:Time
from /home/dorijan/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.0.10/lib/active_support/time_with_zone.rb:322:in `method_missing'
from (irb):61
from /home/dorijan/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands/console.rb:44:in `start'
from /home/dorijan/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands/console.rb:8:in `start'
from /home/dorijan/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands.rb:23:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
really frustrating :)
With ActiveSupport and Time.change you can reset the year, month and day if you like:
> t = Time.now
=> Sun Aug 21 00:46:29 +0000 2011
> t.change(:month => 1, :day => 1, :year => 2000)
=> Sat Jan 01 00:46:29 +0000 2000
This way you could compare the "times" between each other, if they all were reset to the same date. Not sure if this is a good solution though, depends on what you really are looking for.
EDIT:
As per mu's suggestion you could also take a look at the time data type.
To get the minutes from a Time object, you want min not minutes. You can't have a Time instance that's just a "time of day" (i.e. no year, month, ...) but you can use strftime to get a string version that will compare properly:
tod = Time.now.strftime('%H:%M:%S')
# "17:07:23"
if(t1.strftime('%H:%M:%S') == t2.strftime('%H:%M:%S'))
# Same time of day (to one second resolution)
end
Or you could compare the individual hour, min, and sec components:
if(t1.hour == t2.hour && t1.min == t2.min && t1.sec == t2.sec)
# Same time of day (to one second resolution)
end
Which approach you take depends, as usual, on your specific situation and what else is going in in that vicinity.
I have the following method in one of my Rails classes:
def human_departure_time
"#{departure_time.strftime("%A, %d %B %Y")} at #{departure_time.strftime("%I:%M %p")}"
end
As you can see, it just takes a datetime attribute of the model and formats it so that it is more human friendly.
Anyway, I have the following test for this method:
describe "human_departure_time" do
it "should output the time in readable format" do
# first I use the Timecop gem to freeze the time
Timecop.freeze(DateTime.now) do
bus_time = DateTime.now + 1.days
# factory a bus with a specific departure time
bus = Factory :bus, departure_time: bus_time
expected = "#{bus_time.strftime("%A, %d %B %Y")} at #{bus_time.strftime("%I:%M %p")}"
# check that the output is as expected
bus.human_departure_time.should == expected
end
end
end
Pretty simple but the test fails by one hour with the following output:
Failures:
1) Bus human_departure_time should output the time in readable format
Failure/Error: bus.human_departure_time.should == expected
expected: "Wednesday, 17 August 2011 at 03:13 AM"
got: "Wednesday, 17 August 2011 at 02:13 AM" (using ==)
# ./spec/models/bus_spec.rb:34:in `block (4 levels) in <top (required)>'
# ./spec/models/bus_spec.rb:30:in `block (3 levels) in <top (required)>'
Here is my bus factory just incase that is important. I'm overwriting the departure time with the frozen time plus one hour in my test.
factory :bus do
origin_name "Drogheda"
event_name "EP"
departure_time { DateTime.now + 14.days }
end
I assume this is something to do with daylight savings time or something? How can I fix this issue?
ActiveRecord could be automatically converting time attributes in your model to local time.
You can try and use the %Z parameter of strftime to see the time zone of the outputted timestamp to see where a possible conversion is sneaking into your time.
Some Googled hints that might be relevant:
default_timezone:
http://apidock.com/rails/ActiveRecord/Base/default_timezone/class
ActiveRecord::Base.time_zone_aware_attributes
config.active_record.time_zone_aware_attributes:
http://tamersalama.com/2011/01/10/rails-disable-timezone-conversions/
https://mirrors.kilnhg.com/Repo/Mirrors/From-Git/Rails/History/70cb470c1ab8
http://www.ruby-forum.com/topic/2096919
http://www.ruby-forum.com/topic/890711