Python forms.get_image_form函数代码示例

def edit(request, image_id):
    Image = get_image_model()
    ImageForm = get_image_form(Image)

    image = get_object_or_404(Image, id=image_id)

    if not image.is_editable_by_user(request.user):
        raise PermissionDenied

    if request.POST:
        original_file = image.file
        form = ImageForm(request.POST, request.FILES, instance=image)
        if form.is_valid():
            if 'file' in form.changed_data:
                # if providing a new image file, delete the old one and all renditions.
                # NB Doing this via original_file.delete() clears the file field,
                # which definitely isn't what we want...
                original_file.storage.delete(original_file.name)
                image.renditions.all().delete()

                # Set new image file size
                image.file_size = image.file.size

            form.save()

            # Reindex the image to make sure all tags are indexed
            for backend in get_search_backends():
                backend.add(image)

            messages.success(request, _("Image '{0}' updated.").format(image.title), buttons=[
                messages.button(reverse('wagtailimages:edit', args=(image.id,)), _('Edit again'))
            ])
            return redirect('wagtailimages:index')
        else:
            messages.error(request, _("The image could not be saved due to errors."))
    else:
        form = ImageForm(instance=image)

    # Check if we should enable the frontend url generator
    try:
        reverse('wagtailimages_serve', args=('foo', '1', 'bar'))
        url_generator_enabled = True
    except NoReverseMatch:
        url_generator_enabled = False

    if image.is_stored_locally():
        # Give error if image file doesn't exist
        if not os.path.isfile(image.file.path):
            messages.error(request, _(
                "The source image file could not be found. Please change the source or delete the image."
            ).format(image.title), buttons=[
                messages.button(reverse('wagtailimages:delete', args=(image.id,)), _('Delete'))
            ])

    return render(request, "wagtailimages/images/edit.html", {
        'image': image,
        'form': form,
        'url_generator_enabled': url_generator_enabled,
        'filesize': image.get_file_size(),
    })

def add(request):
    ImageModel = get_image_model()
    ImageForm = get_image_form(ImageModel)

    if request.method == "POST":
        image = ImageModel(uploaded_by_user=request.user)
        form = ImageForm(request.POST, request.FILES, instance=image, user=request.user)
        if form.is_valid():
            # Set image file size
            image.file_size = image.file.size

            form.save()

            # Reindex the image to make sure all tags are indexed
            search_index.insert_or_update_object(image)

            messages.success(
                request,
                _("Image '{0}' added.").format(image.title),
                buttons=[messages.button(reverse("wagtailimages:edit", args=(image.id,)), _("Edit"))],
            )
            return redirect("wagtailimages:index")
        else:
            messages.error(request, _("The image could not be created due to errors."))
    else:
        form = ImageForm(user=request.user)

    return render(request, "wagtailimages/images/add.html", {"form": form})

def add(request):
    ImageForm = get_image_form()
    ImageModel = get_image_model()

    if request.POST:
        image = ImageModel(uploaded_by_user=request.user)
        form = ImageForm(request.POST, request.FILES, instance=image)
        if form.is_valid():
            form.save()

            # Reindex the image to make sure all tags are indexed
            for backend in get_search_backends():
                backend.add(image)

            messages.success(request, _("Image '{0}' added.").format(image.title))
            return redirect('wagtailimages_index')
        else:
            messages.error(request, _("The image could not be created due to errors."))
    else:
        form = ImageForm()

    return render(request, "wagtailimages/images/add.html", {
        'form': form,
        'max_filesize': MAX_UPLOAD_SIZE,
    })

    def test_custom_image_model_without_admin_form_fields_raises_warning(self):
        self.reset_warning_registry()
        with warnings.catch_warnings(record=True) as raw_warnings:
            form = get_image_form(CustomImageWithoutAdminFormFields)

            # Check that a RemovedInWagtail12Warning has been triggered

            # Ignore any ResourceWarnings. TODO: remove this when we've stopped ResourceWarnings from happening...
            try:
                clean_warnings = [w for w in raw_warnings if not issubclass(w.category, ResourceWarning)]
            except NameError:  # ResourceWarning only exists on Python >= 3.2
                clean_warnings = raw_warnings

            self.assertEqual(len(clean_warnings), 1)
            self.assertTrue(issubclass(clean_warnings[-1].category, RemovedInWagtail12Warning))
            self.assertTrue("Add admin_form_fields = (tuple of field names) to CustomImageWithoutAdminFormFields" in str(clean_warnings[-1].message))

        # All fields, including the not editable one should be on the form
        self.assertEqual(list(form.base_fields.keys()), [
            'title',
            'file',
            'focal_point_x',
            'focal_point_y',
            'focal_point_width',
            'focal_point_height',
            'caption',
            'not_editable_field',
            'tags',
        ])

    def test_fields(self):
        form = get_image_form(Image)

        self.assertEqual(
            list(form.base_fields.keys()),
            ["title", "file", "tags", "focal_point_x", "focal_point_y", "focal_point_width", "focal_point_height"],
        )

def edit(request, image_id):
    Image = get_image_model()
    ImageForm = get_image_form()

    image = get_object_or_404(Image, id=image_id)

    if not image.is_editable_by_user(request.user):
        raise PermissionDenied

    if request.POST:
        original_file = image.file
        form = ImageForm(request.POST, request.FILES, instance=image)
        if form.is_valid():
            if "file" in form.changed_data:
                # if providing a new image file, delete the old one and all renditions.
                # NB Doing this via original_file.delete() clears the file field,
                # which definitely isn't what we want...
                original_file.storage.delete(original_file.name)
                image.renditions.all().delete()
            form.save()
            messages.success(request, _("Image '{0}' updated.").format(image.title))
            return redirect("wagtailimages_index")
        else:
            messages.error(request, _("The image could not be saved due to errors."))
    else:
        form = ImageForm(instance=image)

    return render(request, "wagtailimages/images/edit.html", {"image": image, "form": form})

def add(request):
    ImageModel = get_image_model()
    ImageForm = get_image_form(ImageModel)

    if request.POST:
        image = ImageModel(uploaded_by_user=request.user)
        form = ImageForm(request.POST, request.FILES, instance=image)
        if form.is_valid():
            # Set image file size
            image.file_size = image.file.size

            form.save()

            # Reindex the image to make sure all tags are indexed
            for backend in get_search_backends():
                backend.add(image)

            messages.success(request, _("Image '{0}' added.").format(image.title), buttons=[
                messages.button(reverse('wagtailimages:edit', args=(image.id,)), _('Edit'))
            ])
            return redirect('wagtailimages:index')
        else:
            messages.error(request, _("The image could not be created due to errors."))
    else:
        form = ImageForm()

    return render(request, "wagtailimages/images/add.html", {
        'form': form,
    })

    def test_custom_image_model_without_admin_form_fields_raises_warning(self):
        self.reset_warning_registry()
        with warnings.catch_warnings(record=True) as w:
            form = get_image_form(CustomImageWithoutAdminFormFields)

            # Check that a RemovedInWagtail12Warning has been triggered
            self.assertEqual(len(w), 1)
            self.assertTrue(issubclass(w[-1].category, RemovedInWagtail12Warning))
            self.assertTrue(
                "Add admin_form_fields = (tuple of field names) to CustomImageWithoutAdminFormFields"
                in str(w[-1].message)
            )

        # All fields, including the not editable one should be on the form
        self.assertEqual(
            list(form.base_fields.keys()),
            [
                "title",
                "file",
                "focal_point_x",
                "focal_point_y",
                "focal_point_width",
                "focal_point_height",
                "caption",
                "not_editable_field",
                "tags",
            ],
        )

def chooser_upload(request):
    Image = get_image_model()
    ImageForm = get_image_form()

    if request.POST:
        image = Image(uploaded_by_user=request.user)
        form = ImageForm(request.POST, request.FILES, instance=image)

        if form.is_valid():
            form.save()
            if request.GET.get("select_format"):
                form = ImageInsertionForm(initial={"alt_text": image.default_alt_text})
                return render_modal_workflow(
                    request,
                    "wagtailimages/chooser/select_format.html",
                    "wagtailimages/chooser/select_format.js",
                    {"image": image, "form": form},
                )
            else:
                # not specifying a format; return the image details now
                return render_modal_workflow(
                    request, None, "wagtailimages/chooser/image_chosen.js", {"image_json": get_image_json(image)}
                )
    else:
        form = ImageForm()

    images = Image.objects.order_by("title")

    return render_modal_workflow(
        request,
        "wagtailimages/chooser/chooser.html",
        "wagtailimages/chooser/chooser.js",
        {"images": images, "uploadform": form},
    )

def chooser_upload(request):
    Image = get_image_model()
    ImageForm = get_image_form()

    if request.POST:
        image = Image(uploaded_by_user=request.user)
        form = ImageForm(request.POST, request.FILES, instance=image)

        if form.is_valid():
            form.save()
            if request.GET.get('select_format'):
                form = ImageInsertionForm(initial={'alt_text': image.default_alt_text})
                return render_modal_workflow(
                    request, 'wagtailimages/chooser/select_format.html', 'wagtailimages/chooser/select_format.js',
                    {'image': image, 'form': form}
                )
            else:
                # not specifying a format; return the image details now
                return render_modal_workflow(
                    request, None, 'wagtailimages/chooser/image_chosen.js',
                    {'image_json': get_image_json(image)}
                )
    else:
        form = ImageForm()

    images = Image.objects.order_by('title')

    return render_modal_workflow(
        request, 'wagtailimages/chooser/chooser.html', 'wagtailimages/chooser/chooser.js',
        {'images': images, 'uploadform': form}
    )

    def test_fields(self):
        form = get_image_form(Image)

        self.assertEqual(list(form.base_fields.keys()), [
            'title',
            'file',
            'tags',
            'focal_point_x',
            'focal_point_y',
            'focal_point_width',
            'focal_point_height',
        ])

    def test_focal_point_fields(self):
        form = get_image_form(WagtailImage)

        self.assertIsInstance(form.base_fields['focal_point_x'], forms.IntegerField)
        self.assertIsInstance(form.base_fields['focal_point_y'], forms.IntegerField)
        self.assertIsInstance(form.base_fields['focal_point_width'], forms.IntegerField)
        self.assertIsInstance(form.base_fields['focal_point_height'], forms.IntegerField)

        self.assertIsInstance(form.base_fields['focal_point_x'].widget, forms.HiddenInput)
        self.assertIsInstance(form.base_fields['focal_point_y'].widget, forms.HiddenInput)
        self.assertIsInstance(form.base_fields['focal_point_width'].widget, forms.HiddenInput)
        self.assertIsInstance(form.base_fields['focal_point_height'].widget, forms.HiddenInput)

def add(request):
    Image = get_image_model()
    ImageForm = get_image_form(Image)

    if request.method == 'POST':
        if not request.is_ajax():
            return HttpResponseBadRequest("Cannot POST to this view without AJAX")

        if not request.FILES:
            return HttpResponseBadRequest("Must upload a file")

        # Build a form for validation
        form = ImageForm({
            'title': request.FILES['files[]'].name,
        }, {
            'file': request.FILES['files[]'],
        })

        if form.is_valid():
            # Save it
            image = form.save(commit=False)
            image.uploaded_by_user = request.user
            image.file_size = image.file.size
            image.save()

            # Success! Send back an edit form for this image to the user
            return json_response({
                'success': True,
                'image_id': int(image.id),
                'form': render_to_string('wagtailimages/multiple/edit_form.html', {
                    'image': image,
                    'form': get_image_edit_form(Image)(instance=image, prefix='image-%d' % image.id),
                }, request=request),
            })
        else:
            # Validation error
            return json_response({
                'success': False,

                # https://github.com/django/django/blob/stable/1.6.x/django/forms/util.py#L45
                'error_message': '\n'.join(['\n'.join([force_text(i) for i in v]) for k, v in form.errors.items()]),
            })
    else:
        form = ImageForm()

    return render(request, 'wagtailimages/multiple/add.html', {
        'max_filesize': form.fields['file'].max_upload_size,
        'help_text': form.fields['file'].help_text,
        'allowed_extensions': ALLOWED_EXTENSIONS,
        'error_max_file_size': form.fields['file'].error_messages['file_too_large_unknown_size'],
        'error_accepted_file_types': form.fields['file'].error_messages['invalid_image'],
    })

def chooser(request):
    Image = get_image_model()

    if request.user.has_perm('wagtailimages.add_image'):
        ImageForm = get_image_form(Image)
        uploadform = ImageForm()
    else:
        uploadform = None

    images = Image.objects.order_by('-created_at')

    q = None
    if 'q' in request.GET or 'p' in request.GET or 'tag' in request.GET:
        # this request is triggered from search, pagination or 'popular tags';
        # we will just render the results.html fragment

        searchform = SearchForm(request.GET)
        if searchform.is_valid():
            q = searchform.cleaned_data['q']

            images = images.search(q)
            is_searching = True
        else:
            is_searching = False

            tag_name = request.GET.get('tag')
            if tag_name:
                images = images.filter(tags__name=tag_name)

        # Pagination
        paginator, images = paginate(request, images, per_page=12)

        return render(request, "wagtailimages/chooser/results.html", {
            'images': images,
            'is_searching': is_searching,
            'query_string': q,
            'will_select_format': request.GET.get('select_format')
        })
    else:
        searchform = SearchForm()

        paginator, images = paginate(request, images, per_page=12)

    return render_modal_workflow(request, 'wagtailimages/chooser/chooser.html', 'wagtailimages/chooser/chooser.js', {
        'images': images,
        'uploadform': uploadform,
        'searchform': searchform,
        'is_searching': False,
        'query_string': q,
        'will_select_format': request.GET.get('select_format'),
        'popular_tags': Image.popular_tags(),
    })

    def test_admin_form_fields_attribute(self):
        form = get_image_form(CustomImage)

        self.assertEqual(list(form.base_fields.keys()), [
            'title',
            'file',
            'tags',
            'focal_point_x',
            'focal_point_y',
            'focal_point_width',
            'focal_point_height',
            'caption',
        ])