ImportError

[Petar Pilipovic]

Hello all, I am trying to build and e_commerc django app, but I have encounter an confusing error.

Mine Error is:

Environment:

Request Method: GET

Request URL: http://127.0.0.1:8000/

Django Version: 1.7.4

Python Version: 2.7.6

Installed Applications:

('django.contrib.admin',

 'django.contrib.auth',

 'django.contrib.contenttypes',

 'django.contrib.sessions',

 'django.contrib.messages',

 'django.contrib.staticfiles',

 'profiles')

Installed Middleware:

('django.contrib.sessions.middleware.SessionMiddleware',

 'django.middleware.common.CommonMiddleware',

 'django.middleware.csrf.CsrfViewMiddleware',

 'django.contrib.auth.middleware.AuthenticationMiddleware',

 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',

 'django.contrib.messages.middleware.MessageMiddleware',

 'django.middleware.clickjacking.XFrameOptionsMiddleware')

Template error:

In template /home/petarp/Documents/Udemy/Learn_Django/static/templates/navbar.html, error at line 15

   cannot import name contactForm

   5 :           <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">

   6 :             <span class="sr-only">Toggle navigation</span>

   7 :             <span class="icon-bar"></span>

   8 :             <span class="icon-bar"></span>

   9 :             <span class="icon-bar"></span>

   10 :           </button>

   11 :           <a class="navbar-brand" href="#">Bootstrap theme</a>

   12 :         </div>

   13 :         <div id="navbar" class="navbar-collapse collapse">

   14 :           <ul class="nav navbar-nav">

   15 :             {% url 'home' as home %} 

   16 :            {% url 'about' as about %}

   17 :            {% url 'contact' as contact %}

   18 :             <li {% if request.path == home %} class="active" {%endif%}><a href="{% url 'home' %}">Home</a></li>

   19 :             <li {% if request.path == about %} class="active" {%endif%}><a href="{% url 'about' %}">About</a></li>

   20 :             <li {% if request.path == contact %} class="active" {%endif%}><a href="{% url 'contact' %}">Contact</a></li>

   21 :             <li class="dropdown">

   22 :               <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>

   23 :               <ul class="dropdown-menu" role="menu">

   24 :                 <li><a href="#">Action</a></li>

   25 :                 <li><a href="#">Another action</a></li>

Traceback:

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response

  111.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/petarp/Documents/Udemy/Learn_Django/source/profiles/views.py" in home

  7.     return render(request, tempalte, context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/shortcuts.py" in render

  50.     return HttpResponse(loader.render_to_string(*args, **kwargs),

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/loader.py" in render_to_string

  178.         return t.render(context_instance)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/base.py" in render

  148.             return self._render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/base.py" in _render

  142.         return self.nodelist.render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/base.py" in render

  844.                 bit = self.render_node(node, context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/debug.py" in render_node

  80.             return node.render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render

  126.         return compiled_parent._render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/base.py" in _render

  142.         return self.nodelist.render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/base.py" in render

  844.                 bit = self.render_node(node, context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/debug.py" in render_node

  80.             return node.render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render

  150.                 return template.render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/base.py" in render

  148.             return self._render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/base.py" in _render

  142.         return self.nodelist.render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/base.py" in render

  844.                 bit = self.render_node(node, context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/debug.py" in render_node

  80.             return node.render(context)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render

  444.             url = reverse(view_name, args=args, kwargs=kwargs, current_app=context.current_app)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in reverse

  551.     return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in _reverse_with_prefix

  415.             self._populate()

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in _populate

  303.                 lookups.appendlist(pattern.callback, (bits, p_pattern, pattern.default_args))

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in callback

  231.         self._callback = get_callable(self._callback_str)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/utils/lru_cache.py" in wrapper

  101.                     result = user_function(*args, **kwds)

File "/home/petarp/.virtualenvs/e_udemy/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in get_callable

  97.             mod = import_module(mod_name)

File "/usr/lib/python2.7/importlib/__init__.py" in import_module

  37.     __import__(name)

File "/home/petarp/Documents/Udemy/Learn_Django/source/contact/views.py" in <module>

  3. from .forms import contactForm

Exception Type: ImportError at /

Exception Value: cannot import name contactForm

 I do not understand this error, or better to say I can not see the error,  how come he can not import 'contactForm'. Mine views.py and mine forms.py. 

Can you help me understand and overcome this.

Tank you.

 

[aRkadeFR]

Hello :)

Can you dump us the layout of your files?
Where is your forms.py?

Thanks

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[Petar Pilipovic]

Hello, I can not do it wright now I am not at home.
As for mine forms.py, it is in mine contact app. I have two apps in mine root project, one off them is contact.
I will send you more info as soon as posible.
Tank you.

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[Petar Pilipovic]

Maybea this can help you, a bref info :
I made a contact app, I have defined app url in mine url root project, then i made a forms.py file, i have defined form in it, then i have made contact.html where I have defined contact.html form which mine app will render, I have then go to views.py an imported contactForm class.
Afther that I have defined connection between  contact.html page and navbar.html, collected static, run server and bam error occur.
I just can not explain to mine self how come he can not import contactForm, and how com he can not render havbar.html, error pop's out line 15.

[aRkadeFR]

Two different problems here.

For your import of contactForm, please try the relative import like:
from contact.forms import contactForm
> contact is your app name

try the (absolute_import)[1] too if you're python2.

[1] https://docs.python.org/2/library/__future__.html

Let us know if this works

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[Petar Pilipovic]

Hello aRkadeFR.

I have solved mine problem, I was working whit Python 2.X here, and like you recommended I have done some  absolute import.

from forms import contactForm ,  and that solved it.

There was one other error, mine base.html did not render mine block content, because I did not defined it, I did that and now mine form is working.

Tank you.

Best.

Petar...;-)

[Petar Pilipovic]

aRkadeFR I have one other question regarding urls.py. I got this error when I am trying to go from contact or about to home page.

Using the URLconf defined in tryDjango.urls, Django tried these URL patterns, in this order:

1. ^$ [name='home']
2. ^about/$ [name='about']
3. ^contact/$ [name='contact']
4. ^admin/
5. ^static\/(?P<path>.*)$
6. ^media\/(?P<path>.*)$

The current URL, contact/{% url 'home' %}, didn't match any of these.

Now mine root/urls.py, and this is mine navbar.html, every other thing is connected properly, and I can go from home page to contact, about, but I can not go reverse.

Can you explain to me where is the error?

Tank you.

[aRkadeFR]

On 02/18/2015 07:17 AM, Petar Pilipovic wrote:

aRkadeFR I have one other question regarding urls.py. I got this error when I am trying to go from contact or about to home page.

Using the URLconf defined in tryDjango.urls, Django tried these URL patterns, in this order:

1. ^$ [name='home']
2. ^about/$ [name='about']
3. ^contact/$ [name='contact']
4. ^admin/
5. ^static\/(?P<path>.*)$
6. ^media\/(?P<path>.*)$

The current URL, contact/{% url 'home' %}, didn't match any of these.

the first part of your list are regexes. The "$" means the end of the line.
So there's nothing after "contact/" ; you can't do "contact/xxxx".

A link in a template is as simple as:
<a href="{% url "name_of_the_view" %}>Link</a>
For your home page:
<a href="{% url "home" %}>Link</a>

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[Petar Pilipovic]

Ok, I will work on it as soon as posible, tnx for your help.

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