ROHIT YADAV

Get /users in the URL then it will be redirect to users/sign_in page.
get '/users', to: redirect('users/sign_in')

I am trying to have a multiple select box. select box will contain all the stores in the DB but the ones that the user belongs to will be selected. We can use this :- <%= select("id", "  ", options_for_select(User.all, :selected =>  id ), {:include_blank => 'Please Select'})    %>We can follow link for the same :-https://stackoverflow.com/questions/2196382/rails-select-tag-with-multiple-values-pre-selected

How to install PostgreSQL 9.6 on any Ubuntu version If we want to install the postgis with postgres then we have to use Postgres 9.6 version. We can follow :-https://askubuntu.com/questions/831292/how-to-install-postgresql-9-6-on-any-ubuntu-version If getting error after creating database in postgres like this :-psql: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?  Then use following link :- https://stackoverflow.com/questions/42653690/psql-could-not-connect-to-server-no-such-file-or-directory-5432-errorsudo chmod 777 -R /var/run/postgresql/ After installing postgres 9.6 then we can install the Postgis using :-sudo apt-get install postgissudo apt install postgis postgresql-9.6-postgis-2.3  then we have to add the postgis extension using :-sudo -u postgres psql -c "CREATE EXTENSION postgis; CREATE EXTENSION postgis_topology;" database_namehttp:/…

Installing Nginx + Passesnger Ubuntu :- 

we will refer this link for installing nginx + passenger :-

https://www.phusionpassenger.com/library/install/nginx/install/oss/xenial/

/etc/nginx/
nginx.conf:-

       user root;
       worker_processes auto;
       pid /run/nginx.pid;

       events {
            worker_connections 768;
       }

       http {
            client_max_body_size 1000M;
            sendfile on;
            tcp_nopush on;
            tcp_nodelay on;
            keepalive_timeout 65;
            types_hash_max_size 2048;

            include /etc/nginx/mime.types;
            default_type application/octet-stream;

           ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
           ssl_prefer_server_ciphers on;

           access_log /var/log/nginx/access.log;
           error_log /var/log/nginx/error.log;

           gzip on;
           gzip_disable "msie6";
include /etc/nginx/passenger.conf;

           include /etc/nginx/conf.d/*.conf;
        …

Make the ZIP file:-zip -r filename.zip foldername FOLDERNAME :- whichwewanttomakeinzip WE CAN REFER :-

http://askubuntu.com/questions/58889/how-can-i-create-a-zip-archive-of-a-whole-directory-via-terminal-without-hidden Extract the ZIP file :-unzip filename.zip

WE CAN REFER :-

https://askubuntu.com/questions/520546/how-to-extract-a-zip-file-to-a-specific-folder

Copy a file from a remote server to a local machine?scp username@remote:/file/to/send /where/to/putscp -i /home/test.pem username@remote:/var/deploy/test.rb /home/Desktop Copy a file from a local machine to a remote server?scp /home/Desktop/test.rb username@remote:/var/deployscp -i /home/test.pem /home/Desktop/test.rb username@remote:/var/deployWE CAN REFER :-

https://unix.stackexchange.com/questions/188285/how-to-copy-a-file-from-a-remote-server-to-a-local-machine

Steps to Upload any type of media in ruby on rails by paperclip Upload video in RailsGemfile

gem 'paperclip'
gem 'paperclip-ffmpeg'
gem 'paperclip-av-transcoder' Apply validation in modelhas_attached_file :file, :styles => {:medium => { :geometry => "300x300", :format => 'flv'},:thumb => {:geometry => "100x100#", :format => 'jpg', :time => 15}
    }, :processors => [:ffmpeg]
When you will get some validation errors then we can use this below code :-validates_attachment_content_type :file, content_type: %w(video/mp4 video/3gp video/webm image/jpeg image/jpg image/png) Install ffmpeg on your systemsudo apt-add-repository ppa:jon-severinsson/ffmpeg
sudo apt-get update
sudo apt-get install ffmpeg

When we will get some ppa error then run:-

http://stackoverflow.com/questions/29125229/how-to-reinstall-ffmpeg-clean-on-ubuntu-14-04

Play video in rails using video_tag

video_tag("trailer.ogg", controls: true,…