fieldchoices.py :  » Web-Frameworks » Django » django » contrib » databrowse » plugins » Python Open Source

Home
Python Open Source
1.3.1.2 Python
2.Ajax
3.Aspect Oriented
4.Blog
5.Build
6.Business Application
7.Chart Report
8.Content Management Systems
9.Cryptographic
10.Database
11.Development
12.Editor
13.Email
14.ERP
15.Game 2D 3D
16.GIS
17.GUI
18.IDE
19.Installer
20.IRC
21.Issue Tracker
22.Language Interface
23.Log
24.Math
25.Media Sound Audio
26.Mobile
27.Network
28.Parser
29.PDF
30.Project Management
31.RSS
32.Search
33.Security
34.Template Engines
35.Test
36.UML
37.USB Serial
38.Web Frameworks
39.Web Server
40.Web Services
41.Web Unit
42.Wiki
43.Windows
44.XML
Python Open Source » Web Frameworks » Django 
Django » django » contrib » databrowse » plugins » fieldchoices.py
from django import http
from django.db import models
from django.contrib.databrowse.datastructures import EasyModel
from django.contrib.databrowse.sites import DatabrowsePlugin
from django.shortcuts import render_to_response
from django.utils.text import capfirst
from django.utils.encoding import smart_str,force_unicode
from django.utils.safestring import mark_safe
import urllib

class FieldChoicePlugin(DatabrowsePlugin):
    def __init__(self, field_filter=None):
        # If field_filter is given, it should be a callable that takes a
        # Django database Field instance and returns True if that field should
        # be included. If field_filter is None, that all fields will be used.
        self.field_filter = field_filter

    def field_dict(self, model):
        """
        Helper function that returns a dictionary of all fields in the given
        model. If self.field_filter is set, it only includes the fields that
        match the filter.
        """
        if self.field_filter:
            return dict([(f.name, f) for f in model._meta.fields if self.field_filter(f)])
        else:
            return dict([(f.name, f) for f in model._meta.fields if not f.rel and not f.primary_key and not f.unique and not isinstance(f, (models.AutoField, models.TextField))])

    def model_index_html(self, request, model, site):
        fields = self.field_dict(model)
        if not fields:
            return u''
        return mark_safe(u'<p class="filter"><strong>View by:</strong> %s</p>' % \
            u', '.join(['<a href="fields/%s/">%s</a>' % (f.name, force_unicode(capfirst(f.verbose_name))) for f in fields.values()]))

    def urls(self, plugin_name, easy_instance_field):
        if easy_instance_field.field in self.field_dict(easy_instance_field.model.model).values():
            field_value = smart_str(easy_instance_field.raw_value)
            return [mark_safe(u'%s%s/%s/%s/' % (
                easy_instance_field.model.url(),
                plugin_name, easy_instance_field.field.name,
                urllib.quote(field_value, safe='')))]

    def model_view(self, request, model_databrowse, url):
        self.model, self.site = model_databrowse.model, model_databrowse.site
        self.fields = self.field_dict(self.model)

        # If the model has no fields with choices, there's no point in going
        # further.
        if not self.fields:
            raise http.Http404('The requested model has no fields.')

        if url is None:
            return self.homepage_view(request)
        url_bits = url.split('/', 1)
        if self.fields.has_key(url_bits[0]):
            return self.field_view(request, self.fields[url_bits[0]], *url_bits[1:])

        raise http.Http404('The requested page does not exist.')

    def homepage_view(self, request):
        easy_model = EasyModel(self.site, self.model)
        field_list = self.fields.values()
        field_list.sort(lambda x, y: cmp(x.verbose_name, y.verbose_name))
        return render_to_response('databrowse/fieldchoice_homepage.html', {'root_url': self.site.root_url, 'model': easy_model, 'field_list': field_list})

    def field_view(self, request, field, value=None):
        easy_model = EasyModel(self.site, self.model)
        easy_field = easy_model.field(field.name)
        if value is not None:
            obj_list = easy_model.objects(**{field.name: value})
            return render_to_response('databrowse/fieldchoice_detail.html', {'root_url': self.site.root_url, 'model': easy_model, 'field': easy_field, 'value': value, 'object_list': obj_list})
        obj_list = [v[field.name] for v in self.model._default_manager.distinct().order_by(field.name).values(field.name)]
        return render_to_response('databrowse/fieldchoice_list.html', {'root_url': self.site.root_url, 'model': easy_model, 'field': easy_field, 'object_list': obj_list})
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.