While upgrading from rails 3.2.22.5 to rails 4.2.6 has_many :subitems, through: :child_associations, source: :child, source_type: ‘ContentItem’, conditions: ‘content_items.deleted 1’, order: ‘content_associations.position ASC’ Replaced conditions with proc has_many :subitems, ->{where(‘content_items.deleted 1’)}, through: :child_associations, source: :child, source_type: ‘ContentItem’, order: ‘content_associations.position ASC’ 2.…
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Invalid mix of scope block and deprecated finder options on ActiveRecord association
Posted in Uncategorized, upgrade from rails 3 to 4
start delayed job on reboot [sh script]
Short way: Making script run at boot time at Debian Manual Way: cd /etc/init.d && sudo nano delayed_job_script Paste following code to delayed_job_script: Note: change RAILS_ROOT and ENV variables according to your setup. #!/bin/sh RAILS_ROOT=”/home/deploy/apps/ProjectFolder/current” ENV=”production” case “$1” in start)…
Check if same key pressed twice in 1second
var twice = 0; var previous_key=null; $(document).on(‘keyup’, function( e ){ if(twice===1){ if(e.which==previous_key) console.log(previous_key+'(you pressed twice!)’+e.which); else{ console.log(previous_key+’—–‘+e.which); twice = 0; } }else{ previous_key=e.which; } twice = 1; setTimeout(function(){ // …reset to 0 after 1s twice = 0; }, 1000); });
Posted in Javascript
Check and export Java path and version Ubuntu
Check java version: java -version Check path of installed java: readlink -f $(which java Note: remove /bin/java from end of path In ~/.bashrc file add following command at the end: export JAVA_HOME=’/usr/lib/jvm/java-7-openjdk-amd64/jre/’ Now run: source ~/.bashrc
Elasticsearch service not starting Ubuntu
Cause: While trying to run elasticsearch in background my elasticsearch user and group was recreated and had a new user and group id Solution: sudo chown -R elasticsearch:elasticsearch /var/lib/elasticsearch/ Now sudo service elasticsearch start sudo service elasticsearch status referenced from…
Posted in Elasticsearch
Elasticsearch 1.2.1 ::Transport::Transport::Errors::BadRequest – [400]
This error occurred because index was corrupted or missing Solution either re-index your documents or copy index from your backup. In Ubuntu elastic-search data directory path is mentioned below: /var/lib/elasticsearch/ inside this directory project wise data directories exists. Copy your…
Posted in Elasticsearch
Heroku permission denied for database “postgres”
FATAL: permission denied for database “postgres” DETAIL: User does not have CONNECT privilege. Run this command to solve this error: heroku addons | grep POSTGRES
Tagged with: Heroku, postgres connect error, postgress db creation error in ubuntu
Posted in Heroku, Uncategorized
Posted in Heroku, Uncategorized
LaTeX | error algorithm.sty not found [Ubuntu 14.04]
If you use the algorithm package in your LaTeX document, as mentioned below: \usepackage{algorithm} you might get this error on compiling it LaTeX Error: File `algorithm.sty’ not found. For Ubuntu, this LaTeX package is bundled in the texlive-science package. To…
Tagged with: algorithm.sty not found ubuntu latex, LaTeX | error algorithm.sty not found [Ubuntu 14.04]
Posted in Latex
Posted in Latex
Connect with MongoDB on separate EC2 Instance
You need to open mongoDB port to world so that you can listen inbound traffic. To do so: In instance security group -> Inboud Open 27017 port or whatever port on which your mongoDB is currently running. Type Protocol Port…
Tagged with: can't ping mongodb, Connect with MongoDB on separate EC2 Instance, Connection refused mongoDB, MongoDB | Connection expire
Posted in amazon, EC2, mongodb, mongoid
Posted in amazon, EC2, mongodb, mongoid
Ubuntu Server Basic Libraries [ with SSL, nokogiri, postgress and nodjs ]
To install basic tools and nokogiri libraries sudo apt-get install git build-essential patch ruby-dev zlib1g-dev liblzma-dev sudo apt-get install -y libssl-dev libreadline-dev Uglifier required library sudo apt-get install nodejs Postgres required library sudo apt-get install libpq-dev Install and Setup Nginx…
