Posts Tagged Tech

Ruby On Rails, dynamic table’s & add button using nested_attributes

So here’s the problem, you want to create several items that belong to one item, normally you would just the the has_many and belongs_to (OneToMany) relation in rails. Using this model you create the primary model (such as purchase order) then create several sub items (such as item) and attach them to the primary model. The problem with this is its time consuming and does not always make sense to do things this way, take the Purchase order and Items scenario, it makes much more sense to create the Purchase order and assciated Items in the same form. This is possible in rails uing nested_attributes.

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Setting up FTP for your website Ubuntu 11.04

File Transfer Protocol (FTP) is a standard network protocol used to transfer files from one host to another over a TCP-based network, such as the Internet. Its most common use is uploading your website files to your webserver, allowing you to develop your website, upload it via FTP then refresh the page to see the updated page. If you’re setting up your own webservers its essential you have some way of uploading files and the best way to do this is with FTP. First you need to setup and configure an ftp server on your webserver, in this tutorial we are going to be using ProFTP. ProFTPD is a proven, high-performance and scalable FTP server, with a focus toward simplicity, security, and ease of configuration. Read the rest of this entry »

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Adding Swap to any EC2 Instance

Custom Swap IconHave you every worried about your EC2 instance running out of memory, especially when you’re running a EC2 Micro instance witch only comes with a total of 613MB of memory. Well If you’re planning on running anything other then a basic web page you may run out of RAM can cause all sorts of problems, mainly it will cause your instance to crash. Well there is a tried an tested method to get around this called paging or swap space. Read the rest of this entry »

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