How do you do relative time in Rails

Question

I m writing a Rails application  but can t seem to find how to do relative time  i e  if given a certain Time class  it can calculate  30 seconds ago  or  2 days ago  or if it s longer than a month  9 1 2008   etc

User · Answer

I ve written a gem that does this for Rails ActiveRecord objects  The example uses created at  but it will also work on updated at or anything with the class ActiveSupport  TimeWithZone   Just gem install and call the  pretty  method on your TimeWithZone instance    https   github com brettshollenberger hublot

User · Answer

You can use the arithmetic operators to do relative time   Time now - 2 days    Will give you 2 days ago

User · Answer

Sounds like you re looking for the time ago in words method  or distance of time in words   from ActiveSupport  Call it like this    lt    time ago in words timestamp    gt

User · Answer

Take a look at the instance methods here   http   apidock com rails Time  This has useful methods such as yesterday  tomorrow  beginning of week  ago  etc   Examples   Time now yesterday Time now ago 2 days  end of day Time now next month beginning of month

User · Answer

You can use the arithmetic operators to do relative time   Time now - 2 days    Will give you 2 days ago

User · Answer

Another approach is to unload some logic from the backend and maek the browser do the job by using Javascript plugins such as   jQuery time ago or its Rails Gem adaptation

User · Answer

What about  30 seconds ago 2 days ago   Or something else you were shooting for

User · Answer

Another approach is to unload some logic from the backend and maek the browser do the job by using Javascript plugins such as   jQuery time ago or its Rails Gem adaptation

User · Answer

Something like this would work   def relative time start time    diff seconds   Time now - start time   case diff seconds     when 0    59       puts    diff seconds  seconds ago      when 60     3600-1        puts    diff seconds 60  minutes ago      when 3600     3600 24-1        puts    diff seconds 3600  hours ago      when  3600 24      3600 24 30         puts    diff seconds  3600 24   days ago      else       puts start time strftime   m  d  Y     end end

User · Answer

What about  30 seconds ago 2 days ago   Or something else you were shooting for

User · Answer

Something like this would work   def relative time start time    diff seconds   Time now - start time   case diff seconds     when 0    59       puts    diff seconds  seconds ago      when 60     3600-1        puts    diff seconds 60  minutes ago      when 3600     3600 24-1        puts    diff seconds 3600  hours ago      when  3600 24      3600 24 30         puts    diff seconds  3600 24   days ago      else       puts start time strftime   m  d  Y     end end

User · Answer

Something like this would work   def relative time start time    diff seconds   Time now - start time   case diff seconds     when 0    59       puts    diff seconds  seconds ago      when 60     3600-1        puts    diff seconds 60  minutes ago      when 3600     3600 24-1        puts    diff seconds 3600  hours ago      when  3600 24      3600 24 30         puts    diff seconds  3600 24   days ago      else       puts start time strftime   m  d  Y     end end

User · Answer

I ve written this  but have to check the existing methods mentioned to see if they are better   module PrettyDate   def to pretty     a    Time now-self  to i      case a       when 0 then  just now        when 1 then  a second ago        when 2  59 then a to s   seconds ago         when 60  119 then  a minute ago   120   2 minutes       when 120  3540 then  a 60  to i to s   minutes ago        when 3541  7100 then  an hour ago    3600   1 hour       when 7101  82800 then   a 99  3600  to i to s   hours ago         when 82801  172000 then  a day ago    86400   1 day       when 172001  518400 then   a 800   60 60 24   to i to s   days ago        when 518400  1036800 then  a week ago        else   a 180000   60 60 24 7   to i to s   weeks ago      end   end end  Time send  include  PrettyDate

User · Answer

Sounds like you re looking for the time ago in words method  or distance of time in words   from ActiveSupport  Call it like this    lt    time ago in words timestamp    gt

User · Answer

I ve written this  but have to check the existing methods mentioned to see if they are better   module PrettyDate   def to pretty     a    Time now-self  to i      case a       when 0 then  just now        when 1 then  a second ago        when 2  59 then a to s   seconds ago         when 60  119 then  a minute ago   120   2 minutes       when 120  3540 then  a 60  to i to s   minutes ago        when 3541  7100 then  an hour ago    3600   1 hour       when 7101  82800 then   a 99  3600  to i to s   hours ago         when 82801  172000 then  a day ago    86400   1 day       when 172001  518400 then   a 800   60 60 24   to i to s   days ago        when 518400  1036800 then  a week ago        else   a 180000   60 60 24 7   to i to s   weeks ago      end   end end  Time send  include  PrettyDate

User · Answer

Since the most answer here suggests time ago in words   Instead of using     lt    time ago in words comment created at    gt    In Rails  prefer    lt abbr class  timeago  title   lt    comment created at getutc iso8601   gt   gt     lt    comment created at to s   gt   lt  abbr gt    along with a jQuery library http   timeago yarp com   with code      abbr timeago   timeago      Main advantage  caching  http   rails-bestpractices com posts 2012 02 10 not-use-time ago in words

User · Answer

You can use the arithmetic operators to do relative time   Time now - 2 days    Will give you 2 days ago

User · Answer

If you re building a Rails application  you should use  Time zone now Time zone today Time zone yesterday   This gives you time or date in the timezone with which you ve configured your Rails application   For example  if you configure your application to use UTC  then Time zone now will always be in UTC time  it won t be impacted by the change of British Summertime for example    Calculating relative time is easy  eg  Time zone now - 10 minute Time zone today days ago 5

User · Answer

Sounds like you re looking for the time ago in words method  or distance of time in words   from ActiveSupport  Call it like this    lt    time ago in words timestamp    gt

User · Answer

Sounds like you re looking for the time ago in words method  or distance of time in words   from ActiveSupport  Call it like this    lt    time ago in words timestamp    gt

User · Answer

I ve written this  but have to check the existing methods mentioned to see if they are better   module PrettyDate   def to pretty     a    Time now-self  to i      case a       when 0 then  just now        when 1 then  a second ago        when 2  59 then a to s   seconds ago         when 60  119 then  a minute ago   120   2 minutes       when 120  3540 then  a 60  to i to s   minutes ago        when 3541  7100 then  an hour ago    3600   1 hour       when 7101  82800 then   a 99  3600  to i to s   hours ago         when 82801  172000 then  a day ago    86400   1 day       when 172001  518400 then   a 800   60 60 24   to i to s   days ago        when 518400  1036800 then  a week ago        else   a 180000   60 60 24 7   to i to s   weeks ago      end   end end  Time send  include  PrettyDate

User · Answer

I ve written this  but have to check the existing methods mentioned to see if they are better   module PrettyDate   def to pretty     a    Time now-self  to i      case a       when 0 then  just now        when 1 then  a second ago        when 2  59 then a to s   seconds ago         when 60  119 then  a minute ago   120   2 minutes       when 120  3540 then  a 60  to i to s   minutes ago        when 3541  7100 then  an hour ago    3600   1 hour       when 7101  82800 then   a 99  3600  to i to s   hours ago         when 82801  172000 then  a day ago    86400   1 day       when 172001  518400 then   a 800   60 60 24   to i to s   days ago        when 518400  1036800 then  a week ago        else   a 180000   60 60 24 7   to i to s   weeks ago      end   end end  Time send  include  PrettyDate

User · Answer

I ve written a gem that does this for Rails ActiveRecord objects  The example uses created at  but it will also work on updated at or anything with the class ActiveSupport  TimeWithZone   Just gem install and call the  pretty  method on your TimeWithZone instance    https   github com brettshollenberger hublot

User · Answer

Since the most answer here suggests time ago in words   Instead of using     lt    time ago in words comment created at    gt    In Rails  prefer    lt abbr class  timeago  title   lt    comment created at getutc iso8601   gt   gt     lt    comment created at to s   gt   lt  abbr gt    along with a jQuery library http   timeago yarp com   with code      abbr timeago   timeago      Main advantage  caching  http   rails-bestpractices com posts 2012 02 10 not-use-time ago in words

User · Answer

Just to clarify Andrew Marshall s solution for using time ago in words  For Rails 3 0 and Rails 4 0   If you are in a view   lt    time ago in words Date today - 1    gt    If you are in a controller  include ActionView  Helpers  DateHelper def index    sexy date   time ago in words Date today - 1  end   Controllers do not have the module ActionView  Helpers  DateHelper imported by default   N B  It is not  the rails way  to import helpers into your controllers   Helpers are for helping views   The time ago in words method was decided to be a view entity in the MVC triad    I don t agree but when in rome

User · Answer

If you re building a Rails application  you should use  Time zone now Time zone today Time zone yesterday   This gives you time or date in the timezone with which you ve configured your Rails application   For example  if you configure your application to use UTC  then Time zone now will always be in UTC time  it won t be impacted by the change of British Summertime for example    Calculating relative time is easy  eg  Time zone now - 10 minute Time zone today days ago 5

User · Answer

Just to clarify Andrew Marshall s solution for using time ago in words  For Rails 3 0 and Rails 4 0   If you are in a view   lt    time ago in words Date today - 1    gt    If you are in a controller  include ActionView  Helpers  DateHelper def index    sexy date   time ago in words Date today - 1  end   Controllers do not have the module ActionView  Helpers  DateHelper imported by default   N B  It is not  the rails way  to import helpers into your controllers   Helpers are for helping views   The time ago in words method was decided to be a view entity in the MVC triad    I don t agree but when in rome

User · Answer

You can use the arithmetic operators to do relative time   Time now - 2 days    Will give you 2 days ago

User · Answer

What about  30 seconds ago 2 days ago   Or something else you were shooting for

User · Answer

Something like this would work   def relative time start time    diff seconds   Time now - start time   case diff seconds     when 0    59       puts    diff seconds  seconds ago      when 60     3600-1        puts    diff seconds 60  minutes ago      when 3600     3600 24-1        puts    diff seconds 3600  hours ago      when  3600 24      3600 24 30         puts    diff seconds  3600 24   days ago      else       puts start time strftime   m  d  Y     end end

User · Answer

Take a look at the instance methods here   http   apidock com rails Time  This has useful methods such as yesterday  tomorrow  beginning of week  ago  etc   Examples   Time now yesterday Time now ago 2 days  end of day Time now next month beginning of month

User · Answer

What about  30 seconds ago 2 days ago   Or something else you were shooting for

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