Allow giving back an item from its the loan inline

from __future__ import unicode_literals

from django.contrib import admin

from django.conf.urls import url

from django.shortcuts import get_object_or_404

from django.contrib import admin, messages

from django.contrib.auth import get_user_model

from django.core.urlresolvers import reverse

from django.http import HttpResponseRedirect

import autocomplete_light

from .models import ItemType, Item, Loan, Storage

admin.site.register(ItemType)

def _give_back_success_messages(items, request):

    for item in items:

        messages.success(request, "{} a bien été marqué comme rendu.".format(item))

    if len(items) > 1:

        messages.warning(

            request,

            "N'oubliez pas de renseigner, pour chaque retour, le nouvel emprunteur "

            + "ou le nouveau lieu de stockage.",

        )

    else:

        messages.warning(

            request,

            "N'oubliez pas de renseigner le nouvel emprunteur "

            + "ou le nouveau lieu de stockage.",

        )

def give_back_loan(request, id):

    # could be better : could not be a POST, and could not rely on HTTP_REFERER

    # We could for that rely on django-inline-actions, but the version

    # we could use with our Django 1.9 is outdated and buggy

    # We could also offer an intermediate page to specify the storage

    loan = get_object_or_404(Loan, pk=id)

    try:

        redirect_url = request.META['HTTP_REFERER']

    except KeyError:

        # Fallback if no referer header is present

        redirect_url = reverse(

            'admin:hardware_provisioning_item_change',

            args=[loan.item.id]

        )

    loan.item.give_back()

    _give_back_success_messages([loan.item], request)

    return HttpResponseRedirect(redirect_url)

class OwnerFilter(admin.SimpleListFilter):

    title = "Propriétaire"

    title = "propriétaire"

    parameter_name = 'owner'

    def lookups(self, request, model_admin):

class CurrentLoanInline(admin.TabularInline):

    model = Loan

    extra = 0

    fields = ('user', 'item', 'short_date', 'notes')

    readonly_fields = ('user', 'item', 'short_date', 'notes')

    fields = ('user', 'item', 'short_date', 'notes', 'action_buttons')

    readonly_fields = ('user', 'item', 'short_date', 'notes', 'action_buttons')

    verbose_name_plural = "Emprunt en cours"

    show_change_link = True

    def has_delete_permission(self, request, obj=None):

        return False

    def action_buttons(self, obj):

        if obj.is_running():

            return """<a class="button "href="{}">Déclarer rendu</a>""".format(

                reverse('admin:loan-give_back', args=[obj.pk]))

        else:

            return ''

    action_buttons.short_description = 'Actions'

    action_buttons.allow_tags = True

class LoanHistoryInline(admin.TabularInline):

    model = Loan

    inlines = [AddLoanInline, CurrentLoanInline, LoanHistoryInline]

    def give_back(self, request, queryset):

        for item in queryset.filter(loans__loan_date_end=None):

        items = queryset.filter(loans__loan_date_end=None)

        for item in items:

            item.give_back()

        _give_back_success_messages(items, request)

    give_back.short_description = 'Rendre le matériel'

    def get_urls(self):

        urls = super(ItemAdmin, self).get_urls()

        my_urls = [

            url(

                r'^give_back/(?P<id>.+)$',

                self.admin_site.admin_view(give_back_loan),

                name='loan-give_back'),

        ]

        return my_urls + urls

class StatusFilter(admin.SimpleListFilter):

    title = 'Statut'