Programmer blog

It often gets that you need it because you invent something that is meant to be displayed for admin. E.g. some nasty form field or something. Here is my recipe to add some additional Django static to your admin. Rather than writing a widget , that is more proper way here... I was using a widget already (from another package). So I could not use it properly, at least without a ton of overrides and complexity it leads to. SO I've decided to add the JS functionality to override a lack of backend. First of all we should add the javascript/css like so: # admin.py class MyModelAdmin (admin.ModelAdmin): # admin additions class Media : css = { "all" : ( "css/my_style.css" ,) } js = ( "js/my_script.js" ,) This add should list your files, loaded in the admin . So you can access them and see in the Django admin frontend itself. Like so: Now that your script and style are loaded you could jus...

Here I will describe an example form using jQuery Form  plugin. It will provide a good frontend, while Django serving a simple backend. I made this AJAX form using unobtrusive javascript. With human language it means the form will function with JavaScript disabled. And so jQuery.form plugin will work as an AJAX speedup addition and not as a major requirement. Features: * Works both with JavaScript  and without. * Uses standard Django ideology/hooks. * Uses the most known jQuery plugin for forms AJAX handling. Theory: Main idea that Django supports both normal and AJAX request in a standard view. And has a handy request.is_ajax() request method. It returns True/False depending on if request search has HTTP_X_REQUESTED_WITH header for the string 'XMLHttpRequest' . jQuery.form plugin sure does have that. Backend Django. We will create an app called 'contact' for our task and place it in the example django project. Urls from the project will redirect to ...

You may often require serialization of a form in JS and parsing of it's data. Here is a nice recipe to validate date with browser default methods. I like it because of relative simplicity. It works on a principle of parsing date's components. We will create a JavaScript Date object from it and check if it is the same as a parsed date string. Date components that are wrong will go out of rage. SO we will have them different from the existing strings. This method is based on that hack. I use this only to validate the string itself. I am specifying a placeholder of an input field to minimise user possibility to make a mistake. And I usually force user to enter date in my format with this tool. Anyway it's a good idea to put any datepicker component also. function validate_date ( value ) { /**********************************************     * Validating date in format dd/mm/yyyy     ************************************...

Being studying Meteor myself I'd like to help beginners like me. I have searched for certain decisions that became wired to me after python development. So I'll just leave them here for your consideration. Imagine a situation when you need to bind your plugins to a newly rendered template. If you are diving into asynchronous JS dev, like I did and have developed AJAX websites... You will, one word, be quite confused because main concepts are different from the one's you used to know. Anyhow I'd try to explain on this simple task. Assume we have a template: < template name = "site-part" > < p > {{my-text}} </ p > </ template > And I render it's content like so: Template . site - part . content = function ( ) { return Session . get ( " my_data " ) ; } So I have this template piece rendered when "my_data" variable appears in session. And I have events binded to newly rendered webpage:...

Hi there! Today I want to tell you about my experience of adding Multiple files upload form to my  Django project Photoblog.  I searched google for lots of plugins, but found only Flash usage examples. I dislike Flash technology, as for my personal usage, and want to build some more quickly working UI. Personally I have flash blocker installed on my browser. So that's main ideas pf my jQuery plugin selection. I found IMHO the best for my case plugin by  Sebastian Tschan . It had only one problem - No available Django examples. Let's try to fill the gap here... So my experience on befriending  Sebastian Tschan's jQuery File Upload Plugin  with Django is the topic of this article. Let's finally get started. :) Sebastian has built an important plugin IMHO. I want to thank him for his noble work of helping people with their tasks. It uses only jQuery UI and no flash, making it work more programmers way... So enough with the lyrics. Let's try to adapt his example...

jQuery Sometimes you need to disable/enable the form element like input or textarea. Jquery helps you to easily make this with setting disabled attribute to "disabled". For e.g.: //To disable  $( '.someElement' ).attr( 'disabled' , 'disabled' ); To enable disabled element you need to remove "disabled" attribute from this element or empty it's string. For e.g: //To enable  $( '.someElement' ).removeAttr( 'disabled' ); // OR you can set attr to ""  $( '.someElement' ).attr( 'disabled' , '' ); Javascript My case was a bit different. I had to disable simple control element used without a form. < a   class = "rotator"   href = ""   onclick = "return rotate(this, parameter, url)"   > I made a javascript like this: /** script */ var  disabled =  false ; function  rotate(button, parameter, url) {      if  (disabled)          return   false ;     d...

Hi! I'm a junior web developer/programmer studying Python/JavaScript programming. In this blog I'll try to publish my findings and things I achieved or studied so far. So I'm working with: - Python - Django - JavaScript - jQuery My Github is:     garmoncheg I'm making an OpenSource project Gphblog (Garmoncheg's Photo Blog) there. Feel free to contact me about any topic listed here...