bash: cap: command not found

bash: cap: command not found

In this post I'll be talking about how to resolve the “bash: cap: command not found” issue. Even after installing Capistrano we get the following error “bash: cap: command not found” the reason behind this is that the path is not decalred in bash file, so to fix the problem you have to add the following line on code inside bashrc file

Step 1
#go to Terminal
#type
sudo gedit ~/.bashrc

Step 2
#Add the following line at the bottom of the file.
export PATH=$PATH:/home/user/.gem/ruby/1.8
#save and close
# To find the installation of you gem just run the following command
#gem list -d c
# capistrano (2.5.8)
# Authors: Jamis Buck, Lee Hambley
# Rubyforge: http://rubyforge.org/projects/capistrano
# Homepage: http://www.capify.org
# Installed at: /home/user/.gem/ruby/1.8

Step 3
#From command prompt
source ~/.bashrc

File Upload using AJAX and jQuery.

File Upload using AJAX and jQuery.

File upload using jQuery is preety simple.

NOTE: please include the jQuery Library afer prototype.js

As you can in the above example I had declared “jQuery.noConflict();” the reason behind this is to abvoid the conflict between jQuery library and prototype.js.

<% remote_form_for :some_random_name, @some_object, :url => {:action => 'testtest'},
:html => { :multipart => true, :id => "upload_form" } do |f| %>


<%= file_field_tag "test" "uploaded" %>
< id="button" class="button" value="Add File" type="button">
< id="save" class="save" value="Upload" type="submit">
<%end%>

Thats it.

How to integrate Comatose CMS in your rails application.

Comatose CMS Yet another Micro CMS, when your client may use to create and edit easily a static pages like privacy policy, terms & conditions, an FAQ, that kind of thing.

Installation of Camotose.
$ ./script/plugin install git://github.com/darthapo/comatose.git
$ ./script/generate comatose_migration
$ rake db:migrate

Once the above mentioned command is executed then configure your route file, at the bottom of your route file paste the below mention syntax
map.comatose_admin
map.comatose_root ''

That it now you to access the Camotose simply type
http://localhost:3000/comatose_admin

You can configure you comatose on your config/environment.rb file, but i'll suggest you to create a comatose.rb inside your config/initializers folder, and insert the following code.

Comatose.configure do |config|
config.admin_title = 'YOUR site name CMS SYSTEM' # it cab anything...
config.admin_helpers = []
config.admin_sub_title = 'Administration Pages'
config.content_type = 'utf-8'
config.default_filter = ''
#config.default_processor = :liquid
config.default_tree_level = 3
config.disable_caching = false
config.hidden_meta_fields = 'filter'
config.helpers = []
config.includes = []
# These are 'blockable' settings
config.authorization = Proc.new { true }
config.admin_get_author = Proc.new { request.env['REMOTE_ADDR'] }
config.after_setup = Proc.new { true }

# Includes AuthenticationSystem in the ComatoseAdminController
config.admin_includes << :authenticated_system

# Calls :login_required as a before_filter
config.admin_authorization = :login_required

end

Insert HTML Tag Using Javascript...

The below mention function will be use to insert a div tag along with input field, button when a user clicks on hyper link. Button will be used to hide the selected div. A user can create max 5 div.


function attachFile(id)
{
var count = new Array("1","2","3","4","5")
var hiddenCount = document.getElementById("Cnt").value;
var Comman = 1;


for(var j=1;j<=count.length;j++)
{
if (id == 'remove_' + j)
{
document.getElementById('div_' + j).style.display = "none";
return
}
}
Comman = parseInt(hiddenCount) + Comman;
if (Comman <= 5)
{
var varTag1 = document.createElement("INPUT");
// var varTagRemove = newElement("input",{type:"button",name:"Remove",id:"remove_"+Comman,value:"1"},{onclick:attachFile(this.id)});
var varTagRemove = document.createElement("INPUT");
varTagRemove.type="button";
varTagRemove.value = "Remove";
varTagRemove.id = "remove_"+Comman;
varTag1.type = "file";
varTag1.id = "file_"+Comman;;
var x = document.all;
var br = "br"
if(x)
br = "
"
var varTag2 = document.createElement(br);

document.getElementById("div_" + Comman).appendChild(varTag1);
document.getElementById("div_" + Comman).appendChild(varTagRemove);
document.getElementById("div_" + Comman).appendChild(varTag2);
var rm_test = document.getElementById("remove_" + Comman);
rm_test.onclick = function(){attachFile(this.id)};
document.getElementById('Cnt').value = Comman;

}
else
{
for (var i = 1; i <= count.length; i++)
{
if (document.getElementById("div_" + i).style.display == "none")
{
document.getElementById("div_" + i).style.display = "block";
return
}
}
//ALERT WILL BE CALLED WHEN THE COUNT OF FILE UPLOADER IS 5 AND ALL THE DIV DISPLAY PROPERTY IS
// BLOCK
alert("Limit is over");
}
}

Ruby: How "send" method works?

Invokes the method identified by symbol, passing it any arguments specified. You can use __send__ if the name send clashes with an existing method in obj.
For example.
Suppose that in you have a three different parameter
1.addnum
2.subnum
3.multinum

depends on the parameter you want to call the method to execute add/subtract/multiply. So what you can do

class Number

def mainfunction(methodname, val1, val2)
#THE BELOW MENTION SEND METHOD WILL CALL ANY ONE METHOD #DEPENDS ON THE FIRST PARAMETER
self.send(methodname, val1, val2)
end

def addnum(val1, val2)
val1 + val2
end

def subnum(val1, val2)
val1 + val2
end

def multinum(val1, val2)
val1 + val2
end
end

num = Number.new
num.mainfunction(“addnum”, 10 , 20) #output => 30

So this is just a very basic example to understand hoe send method work.

How to enable grant access to remote system for MySQL server?

In a few step you can allow remote system to access your MySQL server. To implement first you will need to configure your my.cnf which which is located at

/etc/mysql/my.cnf [Debian Linux Environment]
OR
/etc/my.cnf [Red Hat Linux/Fedora/Centos Linux]
OR
/var/db/mysql/my.cnf [FreeBSD]

access the file using

sudo gedit /etc/mysql/my.cnf

check for following line
bind-address in which the local ip address is assigned 127.0.0.1
bind-address = 127.0.0.1
So just replace the local ip address with your server ip address e.g. 192.168.XXX.XXX
bind-address = 192.168.XXX.XXX

Thats it now all you need to restart your MySQL server and assign a grant access to remote system.

To restart MySQL server
etc/init.d/mysql restart

To assigned a grant access
GRANT ALL ON user_database_name.* TO remote_user_name@'192.168.x.x' IDENTIFIED BY 'PASSWORD';

Thats it and it is done.. Now
the remote user can access your db..

Configuration of phpMyAdmin on ubuntu..

Configuration of phpMyAdmin on ubuntu..
As you know that phpMyAdmin is a database management and adminstration tool. So below is given the installation process of phpMyadmin. Let assume that you have already installed LAMP on ur system.
And incase if you have not installed LAMP then follow the following steps.
1. Open the terminal.
2. install apache [sudo apt-get install apache2].
3. install php [sudo apt-get install php5 libapache2-mod-php5]
4. Once it is installed restart the apache [sudo /etc/init.d/apache2 restart]
5. Install MySQL server [sudo apt-get install mysql-server] and set a password to local system to gets root access.
6. Install MySQL admin [sudo apt-get install mysql-admin]
7. Install MySQL for Apache HTTP Server [sudo apt-get install libapache2-mod-auth-mysql php5-mysql phpmyadmin]
8. Edit your php.ini file to work your php with MySQL [pico /etc/php5/apache2/php.ini] and add following line [extension=mysql.so]
9. Again restart you apache same command used in point 4.
Now once your LAMP installed all you need to edit your apache2.conf file which is located in '/etc/apache2/apache2.conf' and add the following like
[Include /etc/phpmyadmin/apache.conf] and then restart your apache as given in point 4.
That it and your phpmyadmin is configured.

For accessing you can use the following URL "http://localhost/phpmyadmin/" and if it is configured on server or some other system just changed localhost from domain name.

Your comments are welcome.