Re: def altword_list(self, request, word_id):

Hi,

thank you for attempting to explain the whole code, but really I cannot get the whole thing.
It seems to me that you are trying to implement something too big in a single giant step.

Try to export the meaningful code to a new Django project and reduce it to a couple of models, views and templates; moreover I suggest you to rename functions to something easier to grasp, filter1, filter2, filter3 are really too difficult to remember if you are not the code's author.

As for the DetailView and ListView difference: part 4 of the official Django tutorial talks about this topic, did you run through it? Views and generic views are the basics in Django, if you did not understand them, it would be difficult for you to accomplish something useful.

Try to come up to a simpler code and we will dig into it.

Regards,

Leo

Leonardo Giordani

Author of The Digital Cat
My profile on About.me - My GitHub page - My Coderwall profile

2013/10/16 Pepsodent Cola <pepsodentcola@gmail.com>

Hi Leo,

Most of what you describe looks familiar, but I'm not 100% sure that what you say is what I'm trying to do.  One thing you said though stands out which was new to me, which was the difference between ListViews and DetailViews.  I'm not very experienced with those and thus don't understand them fully yet.

Note that you define a get_queryset() method in AltwordlistView, but I think it is not called in a DetailedView, only ListView uses it.

Let me try to walk you through visually what I'm trying to do with my messy and confusing code.  :)

1.)

My ERD diagram.

http://s1289.photobucket.com/user/allergic2facebook/media/Django/Navi_08_zps2a9360d1.png.html

2.)

My Index page list the words that I want in Filter 2 (from Word table).  You can basically ignore everything else my main focus is on Filter 2.  I then click on the word "( id: 1 ) - Page" which then sends me to the AltwordlistView.

http://s1289.photobucket.com/user/allergic2facebook/media/Django/Indexhtml_zps77b085a3.png.html

3.)

The next page I see is altword_list.html.  Here I am trying to integrate the new Filter 8 code into my project but it's not working.  The template file altword_list.html can't receive any Filter 8 variable from my AltwordlistView.

http://s1289.photobucket.com/user/allergic2facebook/media/Django/Altword_listhtml_zps8e8ffe4e.png.html

Only my Filter 5 code is closest to what I am trying to achieve.  It just won't order the votes. :(

Filter 5 code uses get_queryset() so I'm reluctant to throw away that method from AltwordlistView(generic.DetailView).

On this screenshot only Filter 8 and Filter 5 is of interest.  You can basically ignore the rest which are old filter experiments.

4.)

So I'd fix the whole thing this way:

* get rid of get_queryset()

* get rid of the altword_list() function view

* put something like context['poll_list'] = Altword.objects.filter(word__pk=word_id).order_by('-votes') in get_context_data()

I kept the get_queryset() for now because of the above explanation from Step 3.  Until I see a better replacement code.

But I tried to do what you say by integrating the new Filter 8 code into get_context_data().

Views

http://dpaste.com/1418808/

altword_list.html

http://dpaste.com/1418809/

What I get is the below exception, so it seems I'm having issues with connecting the PK in my View code.  How do I deal with this kind of problem?

Exception Value: global name 'word_id' is not defined

Exception Location:  Navi/Django/navi/navi_polls/views.py in get_context_data, line 118

On Wed, Oct 16, 2013 at 12:29 PM, Leonardo Giordani <giordani.leonardo@gmail.com> wrote:

Well, I tried to understand the code. Correct me if I did not understand it:

* you are calling AltwordlistView from r'^altword_list/(?P<pk>\d+)/$

* being a DetailedView on Altword, AltwordlistView extracts the Altword with the given pk with a query like Altword.objects.get(pk=pk)

* you set the context you send to the template, in the get_context_data

There, in get_context_data() you have to initialize all the keywords you are going to use in the template. In this case poll_list.

Note that you define a get_queryset() method in AltwordlistView, but I think it is not called in a DetailedView, only ListView uses it.

So I'd fix the whole thing this way:

* get rid of get_queryset()

* get rid of the altword_list() function view

* put something like context['poll_list'] = Altword.objects.filter(word__pk=word_id).order_by('-votes') in get_context_data()

If you are trying to show a list of objects, however, I suggest you to try and use a ListView, where you can define your queryset, as you tried to do with the get_queryset() method.

Try and let me know if something starts to work. Feel free to ask further if the matter is not clear.

Cheers,

Leo

Leonardo Giordani

Author of The Digital Cat
My profile on About.me - My GitHub page - My Coderwall profile

2013/10/15 Pepsodent Cola <pepsodentcola@gmail.com>

Hi Leo,

get_query() function in class AltwordlistView which I refer to as Filter-5 didn't give me the ordered list result that I wanted.  So somebody on #django IRC helped me to fix that problem by giving me altword_list() function which I refer to as Filter-8.

You can basically ignore all the other Filter codes but I left it there in case it might help you see what I'm trying to do.

My main focus right now is to connect the Filter-8 code to my template altword_list.html but I don't know how to do it.

urls.py
http://dpaste.com/1417526/

views
http://dpaste.com/1417533/

altword_list.html
http://dpaste.com/1417534/

* urls.py

from django.conf.urls import patterns, url  from navi_polls import views  #_______________________________________________________________________________    urlpatterns = patterns('',      # ex: /polls/      url(r'^$', views.IndexView.as_view(), name='index'),      # ex: /polls/5/      url(r'^specifics/(?P<pk>\d+)/$', views.DetailView.as_view(), name='detail'),      # ex: /polls/5/results/      url(r'^(?P<pk>\d+)/results/$', views.ResultsView.as_view(), name='results'),      # ex: /polls/5/vote/      url(r'^(?P<word_id>\d+)/vote/$', views.vote, name='vote'),        # ex: /polls/5/      url(r'^altword_list/(?P<pk>\d+)/$', views.AltwordlistView.as_view(), name='altword_list'),  )

* views.py

from django.http import HttpResponseRedirect  from django.shortcuts import render, get_object_or_404  from django.core.urlresolvers import reverse  from django.views import generic  from django.utils import timezone    from navi_polls.models import Word, Altword  #_______________________________________________________________________________    class IndexView(generic.ListView):      template_name = 'navi_polls/index.html'      context_object_name = 'latest_poll_list'        def get_queryset(self):  # Filter 1          """          Return the last five published polls          (not including those set to be published in the future).          """          return Word.objects.filter(pub_date__lte=timezone.now()                  ).order_by('-pub_date')[:5]            #"""          #Return the last five published polls          #(including those set to be published in the future).          #"""          #return Word.objects.order_by('-pub_date')[:5]          def get_context_data(self, **kwargs):          context = super(IndexView, self).get_context_data(**kwargs)  # Filter 2          filter_2 = Word.objects.filter(direct_transl_word='')  # Filter 4          filter_4 = Altword.objects.filter(rosword__direct_transl_word='')            context.update({              "filter_2": filter_2,              "filter_4": filter_4          })          return context  #_______________________________________________________________________________
      #_______________________________________________________________________________    class AltwordlistView(generic.DetailView):      #model = Word      model = Altword      template_name = 'navi_polls/altword_list.html'      context_object_name = 'poll'        def get_queryset(self):          #"""
          #Excludes any polls that aren't published yet.          #"""          #return Word.objects.filter(pub_date__lte=timezone.now())
  # Filter 5          #return Word.objects.filter(direct_transl_word='')
          #return Word.objects.filter(direct_transl_word='').order_by('-votes')            return Word.objects.filter(direct_transl_word='').order_by('-altword_rosword__votes')            #return Altword.objects.filter(rosword__direct_transl_word='')          #return Altword.objects.filter(word__direct_transl_word='')
          def get_context_data(self, **kwargs):          context = super(AltwordlistView, self).get_context_data(**kwargs)  # Filter 4b          filter_4b = Altword.objects.filter(rosword__direct_transl_word='').order_by('-votes')  # Filter 7          filter_7 = Altword.objects.vote_order()  # Filter 8b  #        filter_8b = Altword.objects.filter(word__pk=word_id).order_by('-votes')              context.update({              "filter_4b": filter_4b,              "filter_7": filter_7   #           "filter_8b": filter_8b          })          return context      # Filter 8      def altword_list(self, request, word_id):          #object_list = AltWord.objects.filter(word__pk=word_id).order_by('-votes')          object_list = Altword.objects.filter(word__pk=word_id).order_by('-votes')            return render(request, 'navi_polls/altword_list.html', {              'poll_list': object_list,          })

* altword_list.html

<h1>{{ poll.rosword }} - id:{{ poll.id }}</h1>
            <!-- Filter 8 -->  {% if poll_list %}      <ul>      {% for row in poll_list %}          <li>( id:{{ row.id }} ) - {{ row.rosword }}</li>      {% endfor %}      </ul>  {% else %}      <p>No list is available.</p>  {% endif %}      
<h3>Filter 8</h3><!-- Filter 8 -->    <table border="1">  <tr>  <th>Altword_id</th>  <th>Rosword</th>  <th>Alt ros word</th>  <th>Alt transl word</th>  <th>Articulate</th>  <th>Votes</th>  </tr>
    <!-- poll.altword_set.all.order_by('-votes') -->  <!-- for choice in poll.altword_set.all -->  <!-- for choice in poll %} -->    <!-- for choice in poll_list -->  <!-- for choice in poll_list.altword_rosword.all -->  {% for choice in poll_list %}  
<tr>      <td>{{ choice.id }}</td>      <td>{{ choice.rosword }}</td>      <td>{{ choice.alt_ros_word }}</td>      <td>{{ choice.alt_transl_word }}</td>      <td>{{ choice.articulate }}</td>      <td>{{ choice.votes }}</td>  </tr>  {% endfor %}  </table>        <h3>Filter 5</h3><!-- Filter 5 -->    <table border="1">  <tr>  <th>Altword_id</th>  <th>Rosword</th>  <th>Alt ros word</th>  <th>Alt transl word</th>  <th>Articulate</th>  <th>Votes</th>  </tr>
    <!-- poll.altword_set.all.order_by('-votes') -->  <!-- for choice in poll.altword_set.all -->  <!-- for choice in poll %} -->  
{% for choice in poll.altword_rosword.all %}  <tr>      <td>{{ choice.id }}</td>      <td>{{ choice.rosword }}</td>      <td>{{ choice.alt_ros_word }}</td>      <td>{{ choice.alt_transl_word }}</td>      <td>{{ choice.articulate }}</td>      <td>{{ choice.votes }}</td>  </tr>  {% endfor %}  </table>        <h3>Filter 7</h3>  <!-- Filter 7 -->  <ul>  {% for choice in filter_7 %}  <li>{{ choice }}  = {{ choice.votes }} votes</li>  {% endfor %}  </ul>    <ul>  {% for choice in filter_7 %}  <li>{{ choice.rosword }} - {{ choice.alt_ros_word }}  = {{ choice.votes }} votes</li>  {% endfor %}  </ul>      <h3>Filter 4b</h3>  <!-- Filter 4b -->  <ul>  {% for choice in filter_4b %}      <li>{{ choice.rosword }} - {{ choice.alt_ros_word }} - {{ choice.alt_transl_word }} - {{ choice.articulate }} = {{ choice.votes }} votes</li>  {% endfor %}  </ul>

On Tue, Oct 15, 2013 at 8:30 AM, Leonardo Giordani <giordani.leonardo@gmail.com> wrote:

Can you check the code you posted? The get_query() function is empty so this code, as posted, can not run.

Please post even the urls you are using to call the view.

Cheers,

Leo

Leonardo Giordani

Author of The Digital Cat
My profile on About.me - My GitHub page - My Coderwall profile

2013/10/15 Pepsodent Cola <pepsodentcola@gmail.com>

Hi,

I got some help by somebody on #django IRC.  They gave me this code snippet to fix my problem.  But I'm having problems incorporating that code into my Class file because Template file says "No list is available" when I try to access the list variable.  What am I doing wrong?

# Filter 8

    def altword_list(self, request, word_id):

        #object_list = AltWord.objects.filter(word__pk=word_id).order_by('-votes')

        object_list = Altword.objects.filter(word__pk=word_id).order_by('-votes')

        return render(request, 'navi_polls/altword_list.html', {

            'poll_list': object_list,

        })

Views

#_______________________________________________________________________________

class AltwordlistView(generic.DetailView):

    #model = Word

    model = Altword

    template_name = 'navi_polls/altword_list.html'

    context_object_name = 'poll'

    def get_queryset(self):

# Filter 5

        #return Word.objects.filter(direct_transl_word='')

    def get_context_data(self, **kwargs):

        context = super(AltwordlistView, self).get_context_data(**kwargs)

# Filter 4b

        filter_4b = Altword.objects.filter(rosword__direct_transl_word='').order_by('-votes')

# Filter 7

        filter_7 = Altword.objects.vote_order()

# Filter 8b

#        filter_8b = Altword.objects.filter(word__pk=word_id).order_by('-votes')

        context.update({

            "filter_4b": filter_4b,

            "filter_7": filter_7

 #           "filter_8b": filter_8b

        })

        return context

# Filter 8

    def altword_list(self, request, word_id):

        #object_list = AltWord.objects.filter(word__pk=word_id).order_by('-votes')

        object_list = Altword.objects.filter(word__pk=word_id).order_by('-votes')

        return render(request, 'navi_polls/altword_list.html', {

            'poll_list': object_list,

        })

#_______________________________________________________________________________

Template

#_______________________________________________________________________________

<!-- Filter 8 -->

{% if poll_list %}

    <ul>

    {% for row in poll_list %}

        <li>( id:{{ row.id }} ) - {{ row.rosword }}</li>

    {% endfor %}

    </ul>

{% else %}

    <p>No list is available.</p>

{% endif %}

<!-- poll.altword_set.all.order_by('-votes') -->

<!-- for choice in poll.altword_set.all -->

<!-- for choice in poll %} -->

<!-- for choice in poll_list -->

<!-- for choice in poll_list.altword_rosword.all -->

{% for choice in poll_list %}

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