expomap/seminar/forms.py

# -*- coding: utf-8 -*-
from django import forms
from django.conf import settings
from ckeditor.widgets import CKEditorWidget
from django.core.exceptions import ValidationError
from django.forms.util import ErrorList
#models
from models import Seminar, CURRENCY
from country.models import Country
from city.models import City
from theme.models import Theme
from organiser.models import Organiser
from accounts.models import User
from company.models import Company
from service.models import Service
#functions
from functions.translate import populate_all, fill_trans_fields_all
from functions.form_check import is_positive_integer
from functions.files import check_tmp_files
from functions.custom_fields import LocationWidget
from functions.form_check import translit_with_separator


class SeminarCreateForm(forms.Form):
    """
    Create Seminar form for creating seminar

    __init__ uses for dynamic creates fields

    save function saves data in Seminar object. If it doesnt exist create new object
    """
    currencies = [(item, item) for item in CURRENCY]

    data_begin = forms.DateTimeField(label='Дата и время начала')
    data_end = forms.DateTimeField(label='Дата и время оконочания')

    country = forms.ModelChoiceField(label='Страна', queryset=Country.objects.all(), empty_label=None)
    theme = forms.ModelMultipleChoiceField(label='Тематики', queryset=Theme.objects.all())
    #creates select input with empty choices cause it will be filled with ajax
    city = forms.ChoiceField(label='Город', choices=[('','')])
    tag = forms.MultipleChoiceField(label='Теги', required=False)

    address = forms.CharField(label='Адрес', required=False, widget=LocationWidget)#google maps api
    web_page = forms.CharField(label='Веб страница', required=False)
    link = forms.CharField(label='Линк на регистрацию', required=False)
    foundation_year = forms.CharField(label='Год основания', required=False)
    #
    currency = forms.ChoiceField(label='Валюта', choices=currencies, required=False)
    tax = forms.BooleanField(label='Налог включен', initial=True, required=False)
    min_price = forms.CharField(label='Минимальная цена', required=False)
    max_price = forms.CharField(label='Максимальная цена', required=False)
    #field for comparing tmp files
    key = forms.CharField(required=False, widget=forms.HiddenInput())
    #
    seminar_id = forms.CharField(required=False, widget=forms.HiddenInput())

    def __init__(self, *args, **kwargs):
        """
        create dynamical translated fields fields
        and fills select fields
        """
        super(SeminarCreateForm, self).__init__(*args, **kwargs)
        #creates translated forms example: name_ru, name_en
        # len(10) is a hack for detect if settings.LANGUAGES is not configured it return all langs
        if len(settings.LANGUAGES) in range(10):
            for lid, (code, name) in enumerate(settings.LANGUAGES):
                # uses enumerate for detect iteration number
                # first iteration is a default lang so it required fields
                required = True if lid == 0 else False
                self.fields['name_%s' % code] = forms.CharField(label='Название', required=required)
                self.fields['main_title_%s' % code] = forms.CharField(label='Краткое описание',
                                                                       required=False, widget=CKEditorWidget)
                self.fields['programm_%s' % code] = forms.CharField(label='Описание',
                                                                       required=False, widget=CKEditorWidget)
                self.fields['discount_%s' % code] = forms.CharField(label='Условия и скидки',
                                                                       required=False, widget=CKEditorWidget)
                #meta data
                self.fields['title_%s' % code] = forms.CharField(label='Тайтл', required=required, max_length=255,
                                                                 widget=forms.TextInput(attrs={'style':'width: 550px'}))
                self.fields['keywords_%s' % code] = forms.CharField(label='Дескрипшен', required=required, max_length=255,
                                                                 widget=forms.TextInput(attrs={'style':'width: 550px'}))
                self.fields['descriptions_%s' % code] = forms.CharField(label='Кейвордс', required=required, max_length=255,
                                                                 widget=forms.TextInput(attrs={'style':'width: 550px'}))
        #creates select inputs ind fill it
        #!service has bitfield. uncomment when country data will be filled
        #services = [(item.id, item.name) for item in Service.objects.all()]
        #self.fields['service'] = forms.MultipleChoiceField(label='Услуги', choices=services, required=False)


    def save(self, id=None):
        """
        changes Seminar model object with id = id
        N/A add new Seminar model object
        usage: form.save(obj) - if change seminar
               form.save() - if add seminar
        """
        data = self.cleaned_data
        #create new seminar object or get exists
        if not id:
            seminar = Seminar()
        else:
            seminar = Seminar.objects.get(id=id)
            seminar.theme.clear()
            seminar.tag.clear()

        #simple fields
        seminar.url = translit_with_separator(data['name_ru']).lower()
        seminar.data_begin = data['data_begin']
        seminar.data_end = data['data_end']
        seminar.link = data['link']
        seminar.web_page= data['web_page']
        seminar.foundation_year = data['foundation_year']
        seminar.address = data['address']
        #
        seminar.currency = data['currency']
        seminar.tax = data['tax']
        seminar.min_price = data['min_price']
        seminar.max_price = data['max_price']

        if data.get('country'):
            seminar.country = Country.objects.get(id=data['country'].id)#.id cause select uses queryset

        if data.get('city'):
            seminar.city = City.objects.get(id=data['city'])

        # uses because in the next loop data will be overwritten
        seminar.save()
        #fill manytomany fields
        for item in data['theme']:
            seminar.theme.add(item.id)#.id cause select uses queryset

        for item in data['tag']:
            seminar.tag.add(item)

        # uses because in the next loop data will be overwritten
        seminar.save()
        #will be saved populated fields
        zero_fields = {}
        #fills all translated fields with data
        #if saves new object, will fill city object. otherwise existing object of City model
        fill_trans_fields_all(Seminar, seminar, data, id, zero_fields)
        #autopopulate
        #populate empty fields and fields which was already populated
        seminar_id = getattr(seminar, 'id')
        populate_all(Seminar, data, seminar_id, zero_fields)
        #save files
        check_tmp_files(seminar, data['key'])

    def clean(self):
        id = self.cleaned_data.get('seminar_id')
        name_ru = self.cleaned_data.get('name_ru')

        seminar = Seminar.objects.filter(url=translit_with_separator(name_ru))
        if seminar and str(seminar[0].id) != id:
            msg = 'Семинар с таким названием уже существует'
            self._errors['name_ru'] = ErrorList([msg])
            del self.cleaned_data['name_ru']

        return self.cleaned_data


    def clean_web_page(self):
        """
        checking web_page
        """
        cleaned_data = super(SeminarCreateForm, self).clean()
        web_page = cleaned_data.get('web_page')
        if not web_page:
            return web_page

        import socket
        try:
            socket.getaddrinfo(web_page, 80)
            return web_page
        except:
            raise forms.ValidationError('Введите правильный адрес страници')

    def clean_link(self):
        """
        checking link
        """
        cleaned_data = super(SeminarCreateForm, self).clean()
        link = cleaned_data.get('link')
        if not link:
            return link

        import socket
        try:
            socket.getaddrinfo(link, 80)
            return link
        except:
            raise forms.ValidationError('Введите правильный адрес страници')


    def clean_foundation_year(self):
        """
        checking foundation_year
        """
        cleaned_data = super(SeminarCreateForm, self).clean()
        foundation_year = cleaned_data.get('foundation_year').strip()
        return is_positive_integer(foundation_year)

    def clean_min_price(self):
        """
        checking min_price
        """
        cleaned_data = super(SeminarCreateForm, self).clean()
        min_price = cleaned_data.get('min_price').strip()
        return is_positive_integer(min_price)

    def clean_max_price(self):
        """
        checking max_price
        """
        cleaned_data = super(SeminarCreateForm, self).clean()
        max_price = cleaned_data.get('max_price').strip()
        return is_positive_integer(max_price)

class SeminarChangeForm(SeminarCreateForm):
    """
    add some fields to SeminarCreateForm

    """
    organiser = forms.ModelMultipleChoiceField(label='Организаторы', queryset=Organiser.objects.all(), required=False)
    company = forms.ModelMultipleChoiceField(label='Компании', queryset=Company.objects.all(), required=False)
    users = forms.ModelMultipleChoiceField(label='Пользователи', queryset=User.objects.all(), required=False)


class SeminarDeleteForm(forms.ModelForm):
    url = forms.CharField(widget=forms.HiddenInput())

    class Meta:
        model = Seminar
        fields = ('url',)