dokumentor/project/customer/views/clients_ajax.py

# -*- coding: utf-8 -*-
import simplejson as json

from django.shortcuts import get_object_or_404
from django.http import HttpResponseBadRequest, HttpResponse
from django.template import RequestContext
from django.views.decorators.http import require_POST
from django.views.decorators.csrf import csrf_protect
from django.contrib.auth.decorators import login_required
from django.template.loader import render_to_string

from customer import models, forms
from docs.models import Invoice, Faktura, AktRabot, AktSverki, Nakladn, Platejka, Dover
from customer.decorators import license_required
from customer.utils import raise_if_no_profile


@login_required
def clients_get_ajax(request, id):
    """Получить контрагента - AJAX.
        Если в форме редактирования контрагента задан атрибут Meta.fields, то дампит только поля, перечисленные в нём.
        Иначе дампит вообще все поля, которые есть в модели.
    """
    if not request.is_ajax():
        return HttpResponseBadRequest()

    raise_if_no_profile(request)

    try:
        fields_list = forms.ClientForm.Meta.fields
    except AttributeError:
        fields_list = []

    client = get_object_or_404(models.Client.objects.values(*fields_list), pk=id, company=request.user.profile)

    return HttpResponse(json.dumps(client), mimetype='application/json')


@login_required
@require_POST
@csrf_protect
def clients_add_ajax(request):
    """Добавить контрагента - AJAX."""
    if not request.is_ajax():
        return HttpResponseBadRequest()

    raise_if_no_profile(request)

    form_class = forms.ClientForm

    new_client_id = None
    new_client_str = None
    form = form_class(data=request.POST)

    new_client_id = None
    html = ''
    if form.is_valid():
        new_client = form.save(commit=False)
        new_client.company = request.user.profile
        new_client_str = new_client.name
        new_client.save()
        new_client_id = new_client.id
        html = render_to_string('customer/clients/list_item.html', 
                {'obj': new_client}, RequestContext(request))

    non_field_errors = form.non_field_errors()
    if not form.is_valid():
        non_field_errors.append(u'Заполните/исправьте выделенные поля.')

    data = {
        'success': form.is_valid(),
        'field_errors': form.errors, # ошибки полей
        'form_errors': non_field_errors, # ошибки формы
        #'reload': form.is_valid() and 'reload_on_success' in request.GET
        'reload': False,
        'id': new_client_id,
        'name': new_client_str,
        'action': 'client-add',
        'row_html': html,
    }
    return HttpResponse(json.dumps(data), mimetype='application/json')


@login_required
@require_POST
@csrf_protect
def clients_edit_ajax(request, id):
    """Редактировать контрагента - AJAX."""
    if not request.is_ajax():
        return HttpResponseBadRequest()

    raise_if_no_profile(request)

    form_class = forms.ClientForm

    client = get_object_or_404(models.Client, pk=id, company=request.user.profile)

    form = form_class(data=request.POST, instance=client)
    if form.is_valid():
        client = form.save()

    non_field_errors = form.non_field_errors()
    html = render_to_string('customer/clients/list_item.html', 
            {'obj': client}, RequestContext(request))
    if not form.is_valid():
        non_field_errors.append(u'Заполните/исправьте выделенные поля.')

    data = {
        'success': form.is_valid(),
        'field_errors': form.errors, # ошибки полей
        'form_errors': non_field_errors, # ошибки формы
        'reload': False,
        'id': client.id,
        'name': client.name,
        'contact': client.contact_name,
        'phone': client.contact_phone,
        'action': 'client-edit',
        'row_html': html,
    }
    return HttpResponse(json.dumps(data), mimetype='application/json')


@login_required
@require_POST
@csrf_protect
def clients_delete_ajax(request, id):
    """Удалить контрагента - AJAX."""
    if not request.is_ajax():
        return HttpResponseBadRequest()

    raise_if_no_profile(request)

    client = get_object_or_404(models.Client, pk=id, company=request.user.profile)
    client_docs = []
    doc_list = [(Invoice, u'счета'), (Faktura, u'счета-фактуры'), (Nakladn, u'накладные'), 
            (AktRabot, u'акты выполненных работ'), (Platejka, u'платёжные поручения'),
            (Dover, u'доверенности'), (AktSverki, u'акты сверки')]
    for doc in doc_list:
        docs = doc[0].objects.filter(client=client)
        if docs:
           client_docs.append(doc[1]) 

    if not client_docs:
        client.delete()
        success = True
        message = {'title': u'Инфо', 'msg': u'Контрагент удалён.'}
        del_id = id
    else:
        success = True
        message = {'title': u'Инфо', 'msg': u'Контрагент не удалён. Есть выписанные документы: %s.' % ','.join(client_docs)}
        del_id = None

    data = {
        'success': success,
        'message': message,
        'reload': False, 
        'action': 'client-delete',
        'id': del_id,
    }
    return HttpResponse(json.dumps(data), mimetype='application/json')