If you inherit from ValidatedModel instead of from models.Model, then full_clean() will be called before save(). So, add validators to your field definitions, and all your fields will be validated before they go to the database. The same thing can be accomplished with a pre_save signal, but the code is quite a bit messier than the simple inheritance above.
It's often useful to dynamically create filter criteria, and Q objects are useful for that, but sometimes you need to make a combined Q composed of various alternates. This bit of code eases the awkwardness of creating the first Q so that there's a combiner, plus the odd case of no criteria.
Hello, This is a port of a php class used to generate XML taconite command documents, useful for (very) easy and powerful ajaxy stuff, if you don't know what that is just check it there in french : http://www.desfrenes.com/playground/taconite/ or there in english : http://www.malsup.com/jquery/taconite/. Basically what it does is generate an XML document that is later processed by a javascript plugin which executes a serie of DOM modifications. About the code, I'm a Django beginner as well as a Python beginner so kind advices are welcome. Cheers.
This is a basic view for exporting data from models. It is designed so that you can provide the GET variables used for searching/filtering within listdisplay pages in the admin, and the code will filter the same way. It allows ouputting of model data in various formats using serializers. This should be used as a urlpattern through get_url, so that you can use the admin_view decorator to properly secure the data.
This simple middleware replaces all 'a href' links to the current page to the 'span' elements. This very usefule from the usability point of view. For example, user open in bowser page http://svetlyak.ru/blog/, and this middleware will replace all 'a' elements on this page, which refer to the '/blog/'. Because of this, link 'Blog' in the main menu, become a simple 'span'. Next, when user goes to the next page, a post with full comments list ('/blog/123/'), for example, the item 'Blog' in the main menu become a link again! To use this middleware, just add it to the list of middleware classes: MIDDLEWARE_CLASSES = ('utils.middleware.RemoveSelfLinks',)
Finds all ``<code></code>`` blocks in a text block and replaces it with pygments-highlighted html semantics. It tries to guess the format of the input, and it falls back to Python highlighting if it can't decide. This is useful for highlighting code snippets on a blog, for instance.
Simple template filter to encode a variable to JSON format Usage: {% load json_filters %} {% block content %} <script type="text/javascript"><![CDATA[ var items = {{ items|jsonify }}; ]]></script> {% endblock %} I'm using JsonResponse for the views but I also want to have preloaded JSON data into the page output
The canonical notion of urls ending in slashes dates from a web where urls were used to access documents and files this is no longer the case so keeping your urls witouth trailing slashes makes them prettier. The problem is that many people/blogs/spiders/browsers could end up with a url with slashes which can be problematic for you SEO, or confuse users. This script is for sites with no trailing slash dicipline in their urls, and to prevent everybody getting a horrible 404 for a simple slash you just got to remove it and issue a permanent redirect (301) and you'll get your pretty urls your cake and eat it too. I must stress, you will have to edit all your public urls removing the slashes like so: url(r'^login$', login,} If you forget, to edit them and visit the url, your browser will remember the redirect and you'll have to clean the browsing history to fix it.
This snippet is used in conjunction with the code in [#1779](http://www.djangosnippets.org/snippets/1779/) to make an mptt-enabled version of the FilteredSelectMultiple widget. See my blog for full details: [http://anentropic.wordpress.com](http://anentropic.wordpress.com/2009/11/05/more-django-mptt-goodness-filteredselectmultiple-m2m-widget/)
If you are using django-mptt to manage content (eg heirarchical categories) then it needs a bit of help to make a nice admin interface. For many-to-many fields, Django provides the quite nice FilteredSelectMultiple widget (a two-pane selection list with search box) but it only renders 'flat' lists... if you have a big category tree it's going to be confusing to know what belongs to what. Also, list items are sorted alphabetically in the js, which won't be what you want. This snippet extends FilteredSelectMultiple to show the tree structure in the list. You'll also need the js from this snippet: [#1780](http://www.djangosnippets.org/snippets/1780/) For usage details see my blog at: [http://anentropic.wordpress.com](http://anentropic.wordpress.com/2009/11/05/more-django-mptt-goodness-filteredselectmultiple-m2m-widget/)
Template filter that divides a list into an exact number of columns. The number of columns is guaranteed. Example (list == [1,2,3,4,5,6,7,8,9,10]): {% for column in list|columns:3 %} <ul> {% for item in column %} <li>{{ item }}</li> {% endfor %} </ul> {% endfor %} Result: <ul> <li>1</li> <li>2</li> <li>3</li> <li>4</li> </ul> <ul> <li>5</li> <li>6</li> <li>7</li> </ul> <ul> <li>8</li> <li>9</li> <li>10</li> </ul> By Davide Muzzarelli
Template filter that truncates the text when it exceeds a certain number of characters. It deletes the last word only if partial. Adds '...' at the end of the text, only if truncated. Examples (text == 'Lorem ipsum dolor sit amet', len(text) == 26) {{ text|truncatewords_by_chars:30 }} 'Lorem ipsum dolor sit amet' {{ text|truncatewords_by_chars:25 }} 'Lorem ipsum dolor sit...' {{ text|truncatewords_by_chars:21 }} 'Lorem ipsum dolor sit...' {{ text|truncatewords_by_chars:20 }} 'Lorem ipsum dolor...' By Davide Muzzarelli
1. Define a subclass extends forms.ModelForm 2. Add the __init__ method 3. Define your ModelForm extends this class 4. Define the CSS for "large","xlarge" and "xxlarge",or define yourself.
Dead simple snippet. Paste it in some models (i use project_specific/models.py), and you don't need to run update_index anymore. When a model is deleted from the database: it is deleted from the index. When a model is saved (created or modified): it is updated in the index.
Standard memcache client uses pickle as a serialization format. It can be handy to use json, especially when another component (e.g. backend) doesn't know pickle, but json yes.