Eval method in ruby executes string/expression passed as parameter.Example:ree-1.8.7-2010.01 > eval("5+3") => 8 ree-1.8.7-2010.01 > eval("a=5") => 5 ree-1.8.7-2010.01 > eval("b||=a") => 5 Its part of ruby meta-programming and not recommended approach unless there is no any alternative to do.
has_many => through association for rails polymorphic model
Example of polymorphic association using has_many, through, source.class student has_many :posts, :as => authorendclass teacher has_many :posts, :as => authorendclass post belongs to :author, :polymorphic => trueendclass division has_many :students has_many :student_posts, :through => :students, :source => :postsendruby script/consolediv = Division.firstdiv.student_postsCheers !S@ndip
nginx passenger configuration for rails application
#user nobody;user www-data;worker_processes 2;#error_log logs/error.log;#error_log logs/error.log notice;#error_log logs/error.log info;#pid logs/nginx.pid;events { worker_connections 1024;}http { passenger_root /var/lib/gems/1.8/gems/passenger-2.2.8; passenger_ruby /usr/bin/ruby1.8; passenger_max_pool_size 3; include mime.types;default_type application/octet-stream; #log_format main '$remote_addr - $remote_user [$time_local] "$request" ' # '$status $body_bytes_sent "$http_referer" ' # … Continue reading nginx passenger configuration for rails application
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