Как поменять html шаблон для поля ImageField в форме редактирования?

Question

[nurzhannogerbek]

Здравствуйте! Помогите пожалуйста разобраться.

У меня есть форма редактирования с полем ImageField. По умолчанию Джанго рендорит следующий шаблон (см. ниже). Как правильно поменять шаблон? Я пробовал следующий код, но template_with_initial не работает. Хотя initial_text, input_text и clear_checkbox_label работают. Могу ошибаться, но мне кажется template_with_initial работает только с FileField.

widgets.py:

from django.forms.widgets import ClearableFileInput

class CustomClearableFileInput(ClearableFileInput):
    initial_text = 'Текущее изображение'

    input_text = 'Изменить'

    clear_checkbox_label = 'Очистить'

    template_with_initial = (
        '<span>%(initial_text)s</span>:'
        '<a href="%(initial_url)s">%(initial)s</a>'
        '%(clear_template)s<br/><span>%(input_text)s</span>: %(input)s'
    )

    template_with_clear = '%(clear)s'
    '<label for="%(clear_checkbox_id)s">%(clear_checkbox_label)s</label>'

forms.py:

class ArticleForm(forms.ModelForm):
    class Meta:
        model = Article
        exclude = ('id',)
        widgets = {
            'image': CustomClearableFileInput
        }

То что выводит Джанго в шаблоне:

Текущее изображение:
<a href="/media/images/2017/08/23/picture.jpg">images/2017/08/23/picture.jpg</a>
Изменить:
<input name="image" id="id_image" type="file">

Comments

[Anton Kuzmichev]

Не могу нагуглить template_with_initial (только в документации на kite.com встречается), и в исходниках тоже не вижу: https://docs.djangoproject.com/en/1.11/_modules/dj...
UPD: какая версия django?

[nurzhannogerbek]

Anton Kuzmichev: Здравствуйте! В вашей ссылке я заметил поле template_name. Cоздал свой собственный файл с названием clearable_file_input.html и поместил его в папку templates, но почему-то данный мой файл не видет. Выдает ошибку TemplateDoesNotExist. Не могу понять почему. Как думаете почему?

widgets.py:

class CustomClearableFileInput(ClearableFileInput):
    ***
    template_name = 'clearable_file_input.html'

clearable_file_input.html:

{% if widget.is_initial %}
	<span>{{ widget.initial_text }}</span>: <a href="{{ widget.value.url }}">{{ widget.value }}</a>
	{% if not widget.required %}
		<input type="checkbox" name="{{ widget.checkbox_name }}" id="{{ widget.checkbox_id }}"/>
		<label for="{{ widget.checkbox_id }}">{{ widget.clear_checkbox_label }}</label>
	{% endif %}
	<br/>
	<span>{{ widget.input_text }}</span>:
{% endif %}
<input type="{{ widget.type }}" name="{{ widget.name }}"{% include "django/forms/widgets/attrs.html" %}/>

ERROR:

Traceback (most recent call last):
  File "/srv/envs/Project/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
    response = get_response(request)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/core/handlers/base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/core/handlers/base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/views/generic/base.py", line 68, in view
    return self.dispatch(request, *args, **kwargs)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/views/generic/base.py", line 88, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/nurzhan/CA/article/views.py", line 106, in get
    request=request
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/loader.py", line 68, in render_to_string
    return template.render(context, request)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/backends/django.py", line 68, in render
    reraise(exc, self.backend)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/backends/django.py", line 89, in reraise
    six.reraise(exc.__class__, new, sys.exc_info()[2])
  File "/srv/envs/Project/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/backends/django.py", line 66, in render
    return self.template.render(context)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/base.py", line 207, in render
    return self._render(context)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/base.py", line 199, in _render
    return self.nodelist.render(context)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/base.py", line 993, in render
    bits.append(force_text(bit))
  File "/srv/envs/Project/lib/python3.6/site-packages/django/utils/encoding.py", line 76, in force_text
    s = six.text_type(s)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/utils/html.py", line 385, in <lambda>
    klass.__str__ = lambda self: mark_safe(klass_str(self))
  File "/srv/envs/Project/lib/python3.6/site-packages/django/forms/boundfield.py", line 41, in __str__
    return self.as_widget()
  File "/srv/envs/Project/lib/python3.6/site-packages/django/forms/boundfield.py", line 120, in as_widget
    **kwargs
  File "/srv/envs/Project/lib/python3.6/site-packages/django/forms/widgets.py", line 221, in render
    return self._render(self.template_name, context, renderer)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/forms/widgets.py", line 226, in _render
    return mark_safe(renderer.render(template_name, context))
  File "/srv/envs/Project/lib/python3.6/site-packages/django/forms/renderers.py", line 31, in render
    template = self.get_template(template_name)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/forms/renderers.py", line 37, in get_template
    return self.engine.get_template(template_name)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/backends/django.py", line 41, in get_template
    reraise(exc, self)
  File "/srv/envs/Project/lib/python3.6/site-packages/django/template/backends/django.py", line 89, in reraise
    six.reraise(exc.__class__, new, sys.exc_info()[2])
  File "/srv/envs/kaseAdmPy362/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/srv/envs/kaseAdmPy362/lib/python3.6/site-packages/django/template/backends/django.py", line 39, in get_template
    return Template(self.engine.get_template(template_name), self)
  File "/srv/envs/kaseAdmPy362/lib/python3.6/site-packages/django/template/engine.py", line 162, in get_template
    template, origin = self.find_template(template_name)
  File "/srv/envs/kaseAdmPy362/lib/python3.6/site-packages/django/template/engine.py", line 148, in find_template
    raise TemplateDoesNotExist(name, tried=tried)
django.template.exceptions.TemplateDoesNotExist: clearable_file_input.html
[24/Aug/2017 11:02:30] "GET /administration/article/47/edit/ HTTP/1.1" 500 25476

Answer 1

[nurzhannogerbek]

Проблему решил следующим образом. После данных настроек Джанго увидел template файл.

settings.py:

INSTALLED_APPS = [
    'django.forms',
]

FORM_RENDERER = 'django.forms.renderers.TemplatesSetting'