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Pretty raw_id_fields with django-salmonella and django-grappelli

django django-admin programming tips grappelli

Sometimes, when dealing with m2m relationships, we need to use the raw_id_fields property of the ModelAdmin class, in order to choose the related objects in a new page, where we can sort and filter the available items.

Without doubt the information that the widget used by django to treat such fields gives us is a bit poor. We only see the related objects's ids, it would be nicer to have the string representation of the object.

Here comes django-salmonella:

A raw_id_fields widget replacement that handles display of an object's string ...

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Responsive menu for bootstrap

bootstrap css3 javascript jquery

This is a nice one.

Bootstrap is a nice framework, the great advantage of using it is that it saves you a lot of time while building a responsive web site (the same can be said of other css frameworks out there).
The drawback is that the web sites coming out in the last years very often looks the same, all of them have the same navbar and the same menu behavior which collapses for extra-small devices, showing a menu button which reveals the content when pressed.

A good way to differentiate your web site from the others could be a change in the menu collapsing behavior.

Datmenu is a nice responsive menu plugin for Wordpress, so the idea is ...

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Add links to django admin changelist view

django django-admin programming tips

Sometimes you may need to add one or more links for each table row in your admin changelist view. There are many ways to do it, and here we'ss see a simple one. So this post is nothing more than a tip.

In my case I had to add a link opening a pdf view of the model item detail, here comes my implementation:

- app/models.py

from django.db import models
from django.core.urlresolvers import reverse
from django.utils.html import mark_safe

class MyModel(models.Model):
    title = models.CharField('title', max_length=255)
    # ...

    def pdf_link(self):
        return mark_safe('<a class="grp-button" href="%s" target="blank">view pdf</a>' % reverse('archiviocr-opera-pdf', args=[self.id]))
    pdf_link.short_description = _('PDF')

- app/admin ...

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Paginating the results of a Django form POST request

django forms pagination

This is quite a common situation, we have a search form which leads to a result page. The number of found results can be big enough to require pagination. If we use the classic pagination code, the posted parameters will be lost when changing page and our search gets broken.

There are several ways to solve the problem, as tux21b wrote in this stack overflow answer.

Here I will talk about the first method, using session.
In the same stack overflow page you can see an answer by rvnovaes, which surely works but in my opinion has some eliminable drawbacks. The first is that if there are many search fields the code we have to write is too long (yes ...

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How to implement modal popup django forms with bootstrap

django forms bootstrap

UPDATE 11/18/2015

I wrote another article like this, but newer, just tested and with support for both bootstrap 3 and 4-alpha, check it out:

http://www.abidibo.net/blog/2015/11/18/modal-django-forms-bootstrap-4/


Sometimes could be a good idea to have the user provide all the needed information without living the "index" or "main" page of our web application. In other terms, sometimes could be a good idea to have some forms appear on a layer, a modal ...

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Check if user belongs to a group in django templates

django tips

Generally when implementing some "authentication logic" inside a django template it's enough to check if a user has some permissions, and in such cases you can use the variable perms, which is available if (from django site):

Technically, these variables are only made available in the template context if you use RequestContext and your "django.contrib.auth.context_processors.auth", which is default. For more, see the RequestContext docs.

But could happen that you need to check if a user belongs ...

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Drag and drop touch compatible with mootools

drag&drop javascript mobile mootools

Drag and drop is a nice feature which often can increase the usability of our web applications. Mootools has a good support for drag and drop in the more package, which actually works well for desktop environments.

But unfortunately we are in 2014, and now targeting our apps for desktop only is something which should be avoided except if we are sure no one will use them with mobile or tablets.

So the problem is, how to extend the drag ...

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AWR - abidibo's web radio software

awr gtk python software

Today I'll introduce you AWR, my first python/GTK software which actually acts as an interface to mplayer in order to manage web radio streams.

AWR is a free, open source, python project, the code is hosted on github, feel free to use, fork, contribute and so on...

License

© 2013 Stefano Contini - MIT License (http://opensource.org/licenses/MIT).

Features

  • The web radios appearing in the interface inside genre-tabs are configurable through a simple json file, you can add ...

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Wordevents boosted up

javascript mootools wordevents

Wordevents is a mootools plugin which allows to listen for word typed events, and execute given callbacks if the word belongs to a given dictionary. Till release 0.1.x it the dictionary could be only filled with strings, which represent the words to listen for. Now things are different.

Improvements

Wordevents accepts as an option a function which says if the typed character should be considered or not, allowing to consider only a certain set of characters (i.e ...

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Your Smartwatch Loves Tasker!

Your Smartwatch Loves Tasker!

Now available for purchase!

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