expomap/news/views.py

# -*- coding: utf-8 -*-
from django.shortcuts import  render_to_response
from django.http import HttpResponseRedirect, HttpResponse
from django.core.context_processors import csrf
from django.conf import settings
from django.contrib.contenttypes.models import ContentType
from django.contrib.auth.decorators import login_required
from django.db.models.loading import get_model
import json
#model and forms
from models import News
from news.forms import NewsForm, NewsChangeForm
from exposition.models import Exposition
from conference.models import Conference
from theme.models import Tag
from file.models import FileModel, TmpFile
from file.forms import FileModelForm
#python
import random
#custom views
from functions.custom_views import objects_list


def news_all(request):
    """
    Return list of all news with pagination
    """
    return objects_list(request, News, 'news_all.html')


@login_required
def news_add(request):
    """
    Return form of company and post it on the server.
    If form is posted redirect on the page of all companies.
    """
    #if form would be not valid key must be same
    if request.POST.get('key'):
        key = request.POST['key']
    else:
        key = random.getrandbits(128)

    file_form = FileModelForm(initial={'key': key})

    if request.POST:
        form = NewsForm(request.POST)
        #set choices filled by ajax
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.all()]

        if request.POST['event'] == 'exposition.Exposition':
            form.fields['event_id'].choices = [(item.id, item.name) for item in Exposition.objects.all()]
        if request.POST['event'] == 'conference.Conference':
            form.fields['event_id'].choices = [(item.id, item.name) for item in Conference.objects.all()]

        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/news/all/')
    else:
        form = NewsForm(initial={'key': key})

    args = {}
    args.update(csrf(request))

    args['form'] = form
    args['languages'] = settings.LANGUAGES
    args['file_form'] = file_form
    args['files'] = TmpFile.objects.filter(key=key)

    return render_to_response('news_add.html', args)

@login_required
def news_change(request, url):
    """
    Return form and fill it with existing News object data.

    If form is posted redirect on the page of all news.
    """
    try:
    #check if url exists else redirect to the list of seminars
        news = News.objects.get(url=url)
        news_id = getattr(news, 'id')
        file_form = FileModelForm(initial={'model': 'news.News'})
    except:
        return HttpResponseRedirect('/news/all')

    if request.POST:
        form = NewsChangeForm(request.POST)
        #set choices filled by ajax
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.all()]

        if request.POST['event'] == 'exposition.Exposition':
            form.fields['event_id'].choices = [(item.id, item.name) for item in Exposition.objects.all()]
        if request.POST['event'] == 'conference.Conference':
            form.fields['event_id'].choices = [(item.id, item.name) for item in Conference.objects.all()]

        if form.is_valid():
            form.save(news_id)
            return HttpResponseRedirect('/news/all')
    else:
        #fill form with data from database
        data = {'date':news.date, 'type':news.type, 'paid': news.paid}

        if news.organiser:
            data['organiser'] = news.organiser.id
        #
        if news.content_type:
            data['event'] = 'conference.Conference' if news.content_type.model=='conference'\
                else 'exposition.Exposition'
            #if news.content_type.model=='conference':
            #    data['event'] = 'conference.Conference'
            #elif news.content_type.model=='exposition':
            #    data['event'] = 'exposition.Exposition'

        data['event_id'] = news.object_id

        data['theme'] = [item.id for item in news.theme.all()]
        data['tag'] = [item.id for item in news.tag.all()]
        #data from translated fields
        for code, name in settings.LANGUAGES:
            obj = News._meta.translations_model.objects.get(language_code = code,master__id=news_id) #access to translated fields
            data['main_title_%s' % code] = obj.main_title
            data['preview_%s' % code] = obj.preview
            data['description_%s' % code] = obj.description
            data['title_%s' % code] = obj.title
            data['keywords_%s' % code] = obj.keywords
            data['descriptions_%s' % code] = obj.descriptions

        form = NewsChangeForm(initial=data)
        #set choices filled by ajax
        form.fields['tag'].choices = [(item.id, item.name) for item in Tag.objects.filter(theme__in=data['theme'])]
        if data.get('event'):
            if data['event'] == 'conference.Conference':
                events = [(item.id, item.name) for item in Conference.objects.all()]
            elif data['event'] == 'exposition.Exposition':
                events = [(item.id, item.name) for item in Exposition.objects.all()]
            form.fields['event_id'].choices = events

    args = {}
    args.update(csrf(request))

    args['form'] = form
    args['languages'] = settings.LANGUAGES
    args['file_form'] = file_form

    #get list of files which connected with specific model object
    args['files'] = FileModel.objects.filter(content_type=ContentType.objects.get_for_model(news), object_id=getattr(news, 'id'))
    args['obj_id'] = news_id

    return render_to_response('news_add.html', args)


def get_event_id(request):
    """

    """

    if request.GET['model'] != 'None':
        Model = get_model(request.GET['model'].split('.')[0], request.GET['model'].split('.')[1])
        events= Model.objects.all()
        #events = json.dumps([(item.id, item.name) for item in data])
        return render_to_response('select.html', {'objects': events})
    else:
        return HttpResponse()