If you want to use an OR operator on one column’s value, you can pass an array to .where and ActiveRecord will use IN(value,other_value): Model.where(:column => [“value”, “other_value”] outputs: SELECT `table_name`.* FROM `table_name` WHERE `table_name`.`column` IN (‘value’, ‘other_value’) This should achieve the equivalent of an OR on a single column
$ sudo su $ env ARCHFLAGS=”-arch x86_64″ gem install pg Building native extensions. This could take a while… Successfully installed pg-0.11.0 1 gem installed Installing ri documentation for pg-0.11.0… Installing RDoc documentation for pg-0.11.0… WORKED!
What I like to do is include the per-view Javascript in a content_for :head block and then yield to that block in your application layout. For example If it’s pretty short then: <% content_for :head do %> <script type=”text/javascript”> $(function() { $(‘user_rating_positve’).click(function() { $(‘some_div’).show(); } }); </script> <% end %> or, if longer, then: <% … Read more
As of Rails 2.3.9, there is a setting in config/application.rb in which you can specify directories that contain files you want autoloaded. From application.rb: # Custom directories with classes and modules you want to be autoloadable. # config.autoload_paths += %W(#{config.root}/extras)
It looks like in Ubuntu that header is part of the libpq-dev package (at least in the following Ubuntu versions: 11.04 (Natty Narwhal), 10.04 (Lucid Lynx), 11.10 (Oneiric Ocelot), 12.04 (Precise Pangolin), 14.04 (Trusty Tahr) and 18.04 (Bionic Beaver)): … /usr/include/postgresql/libpq-fe.h … So try installing libpq-dev or its equivalent for your OS: For Ubuntu/Debian systems: … Read more
Postgres has two different timestamp data types: timestamp with time zone, short name: timestamptz timestamp without time zone, short name: timestamp timestamptz is the preferred type in the date/time family, literally. It has typispreferred set in pg_type, which can be relevant: Generating time series between two dates in PostgreSQL Internal storage and epoch Internally, timestamps … Read more
Try: > ‘gmail.test.com’.split(‘.’).last(2) == [‘test’,’com’] => true
This will take care of 0‘s in between the phone numbers phone=”08763843478,+918763843478,08763843478,+918763843478,+918763840008″ phone.split(‘,’).map{|num| num.gsub(/^\+91|^0/, ”)}.join(‘,’) #=> “8763843478,8763843478,8763843478,8763843478,8763840008”