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# -*- coding: UTF-8 -*- 

# Copyright 2013-2016 Luc Saffre 

# License: BSD (see file COPYING for details) 

"""Database models for `lino.modlib.polls`. 

 

.. rubric:: Models overview 

 

A :class:`Poll` is a collection of :class:`Questions <Question>` which 

we want to ask repeatedly to different people. Each Question has a 

*question text* and a :class:`ChoiceSet`, i.e. a stored ordered set of 

possible choices.  A :class:`Response` is when somebody answers to a 

`Poll`.  A Response contains a set of :class:`AnswerChoices 

<AnswerChoice>`, each of which represents a given Choice selected by 

the questioned person for a given `Question` of the `Poll`.  If the 

Question is *multiple choice*, then there may be more than one 

`AnswerChoice` per `Question`.  A `Response` also contains a set of 

`AnswerRemarks`, each of with represents a remark written by the 

responding person for a given Question of the Poll. 

 

See also :doc:`/tested/polly`. 

 

""" 

from builtins import str 

from builtins import object 

 

import logging 

logger = logging.getLogger(__name__) 

 

from django.db import models 

from django.utils.translation import ugettext_lazy as _ 

from django.utils.translation import pgettext_lazy as pgettext 

 

# om atelier import rstgen 

from lino.api import dd, rt 

from lino import mixins 

from lino.utils import join_elems 

 

from lino.utils.xmlgen import html as xghtml 

from lino.utils.xmlgen.html import E 

 

from lino.mixins import Referrable 

 

from lino.modlib.users.mixins import ByUser, UserAuthored 

 

from .utils import ResponseStates, PollStates 

from .roles import PollsUser, PollsStaff 

 

NullBooleanField = models.NullBooleanField 

 

 

class ChoiceSet(mixins.BabelNamed): 

 

    class Meta(object): 

        app_label = 'polls' 

        verbose_name = _("Choice Set") 

        verbose_name_plural = _("Choice Sets") 

 

 

class ChoiceSets(dd.Table): 

    required_roles = dd.required(PollsStaff) 

    model = 'polls.ChoiceSet' 

    detail_layout = """ 

    name 

    ChoicesBySet 

    """ 

 

 

class Choice(mixins.BabelNamed, mixins.Sequenced): 

 

    class Meta(object): 

        app_label = 'polls' 

        verbose_name = _("Choice") 

        verbose_name_plural = _("Choices") 

 

    choiceset = models.ForeignKey('polls.ChoiceSet', related_name='choices') 

 

    def get_siblings(self): 

        return self.choiceset.choices.order_by('seqno') 

 

    @dd.action() 

    def select_by_response(self, ar): 

        mi = ar.master_instance 

        dd.logger.info("20140929 %s", mi) 

        if isinstance(mi, Response): 

            AnswerChoice(response=mi, choice=self).save() 

 

 

class Choices(dd.Table): 

    model = 'polls.Choice' 

    required_roles = dd.required(PollsStaff) 

 

 

class ChoicesBySet(Choices): 

    master_key = 'choiceset' 

    required_roles = dd.required() 

 

 

@dd.python_2_unicode_compatible 

class Poll(UserAuthored, mixins.CreatedModified, Referrable): 

    """A series of questions.""" 

    class Meta(object): 

        app_label = 'polls' 

        abstract = dd.is_abstract_model(__name__, 'Poll') 

        verbose_name = _("Poll") 

        verbose_name_plural = _("Polls") 

        ordering = ['ref'] 

 

    title = models.CharField(_("Heading"), max_length=200) 

 

    details = models.TextField(_("Details"), blank=True) 

 

    default_choiceset = models.ForeignKey( 

        'polls.ChoiceSet', 

        null=True, blank=True, 

        related_name='polls', 

        verbose_name=_("Default Choiceset")) 

 

    default_multiple_choices = models.BooleanField( 

        _("Allow multiple choices"), default=False) 

 

    questions_to_add = models.TextField( 

        _("Questions to add"), 

        help_text=_("Paste text for questions to add. " 

                    "Every non-empty line will create one question."), 

        blank=True) 

 

    state = PollStates.field(default=PollStates.draft.as_callable) 

 

    workflow_state_field = 'state' 

 

    def __str__(self): 

        return self.ref or self.title 

 

    def after_ui_save(self, ar, cw): 

        if self.questions_to_add: 

            # print "20150203 self.questions_to_add", self, 

            # self.questions_to_add 

            q = None 

            qkw = dict() 

            number = 1 

            for ln in self.questions_to_add.splitlines(): 

                ln = ln.strip() 

                if ln: 

                    if ln.startswith('#'): 

                        q.details = ln[1:] 

                        q.save() 

                        continue 

                    elif ln.startswith('='): 

                        q = Question(poll=self, title=ln[1:], 

                                     is_heading=True, **qkw) 

                        number = 1 

                    else: 

                        q = Question(poll=self, title=ln, 

                                     number=str(number), **qkw) 

                        number += 1 

                    q.full_clean() 

                    q.save() 

                    qkw.update(seqno=q.seqno + 1) 

            self.questions_to_add = '' 

            self.save()  # save again because we modified afterwards 

 

        super(Poll, self).after_ui_save(ar, cw) 

 

    @dd.virtualfield(dd.HtmlBox(_("Result"))) 

    def result(self, ar): 

        return E.div(*tuple(get_poll_result(self))) 

 

 

def get_poll_result(self): 

    #~ yield E.h1(self.title) 

    for cs in ChoiceSet.objects.all(): 

        questions = self.questions.filter(choiceset=cs) 

        if questions.count() > 0: 

            yield E.h2(str(cs)) 

            for question in questions: 

                yield E.p(question.text) 

 

 

class PollDetail(dd.DetailLayout): 

    main = "general results" 

 

    general = dd.Panel(""" 

    ref title workflow_buttons 

    details 

    default_choiceset default_multiple_choices 

    polls.QuestionsByPoll 

    """, label=_("General")) 

 

    results = dd.Panel(""" 

    id user created modified state 

    polls.ResponsesByPoll 

    # result 

    PollResult 

    """, label=_("Results")) 

 

 

class Polls(dd.Table): 

    required_roles = dd.required(PollsUser) 

    model = 'polls.Poll' 

    column_names = 'ref title user state *' 

    detail_layout = PollDetail() 

    insert_layout = dd.InsertLayout(""" 

    ref title 

    default_choiceset default_multiple_choices 

    questions_to_add 

    """, window_size=(60, 15)) 

 

 

class AllPolls(Polls): 

    required_roles = dd.required(PollsStaff) 

    column_names = 'id ref title user state *' 

 

 

class MyPolls(ByUser, Polls): 

    column_names = 'ref title state *' 

 

 

@dd.python_2_unicode_compatible 

class Question(mixins.Sequenced): 

    """A question of a poll. 

 

    .. attribute:: number 

 

    """ 

    class Meta(object): 

        app_label = 'polls' 

        verbose_name = _("Question") 

        verbose_name_plural = _("Questions") 

        ordering = ['seqno'] 

 

    allow_cascaded_delete = ['poll'] 

 

    poll = models.ForeignKey('polls.Poll', related_name='questions') 

    number = models.CharField(_("No."), max_length=20, blank=True) 

    title = models.CharField(pgettext("polls", "Title"), max_length=200) 

    details = models.TextField(_("Details"), blank=True) 

 

    choiceset = models.ForeignKey('polls.ChoiceSet', blank=True, null=True) 

    multiple_choices = models.BooleanField( 

        _("Allow multiple choices"), blank=True, default=False) 

    is_heading = models.BooleanField(_("Heading"), default=False) 

 

    NUMBERED_TITLE_FORMAT = "%s) %s" 

 

    def __str__(self): 

        #~ return self.text[:40].strip() + ' ...' 

        if self.number: 

            return self.NUMBERED_TITLE_FORMAT % (self.number, self.title) 

        return self.title 

 

    def get_siblings(self): 

        #~ return self.choiceset.choices.order_by('seqno') 

        return self.poll.questions.order_by('seqno') 

 

    def get_choiceset(self): 

        if self.is_heading: 

            return None 

        if self.choiceset is None: 

            return self.poll.default_choiceset 

        return self.choiceset 

 

    def full_clean(self, *args, **kw): 

        if self.multiple_choices is None: 

            self.multiple_choices = self.poll.default_multiple_choices 

        #~ if self.choiceset_id is None: 

            #~ self.choiceset = self.poll.default_choiceset 

        super(Question, self).full_clean() 

 

Question.set_widget_options('number', width=5) 

 

 

class Questions(dd.Table): 

    required_roles = dd.required(PollsStaff) 

    model = 'polls.Question' 

    column_names = "seqno poll number title choiceset is_heading *" 

    detail_layout = """ 

    poll number is_heading choiceset multiple_choices 

    title 

    details 

    AnswersByQuestion 

    """ 

    order_by = ['poll', 'seqno'] 

 

 

class QuestionsByPoll(Questions): 

    required_roles = dd.required(PollsUser) 

    master_key = 'poll' 

    column_names = 'seqno number title:50 is_heading *' 

    auto_fit_column_widths = True 

    stay_in_grid = True 

 

 

class ToggleChoice(dd.Action): 

    """Toggle the given choice for the given question in this response. 

    """ 

    readonly = False 

    show_in_bbar = False 

    parameters = dict( 

        question=dd.ForeignKey("polls.Question"), 

        choice=dd.ForeignKey("polls.Choice"), 

    ) 

    no_params_window = True 

 

    def run_from_ui(self, ar, **kw): 

        response = ar.selected_rows[0] 

        if response is None: 

            return 

        pv = ar.action_param_values 

        qs = AnswerChoice.objects.filter(response=response, **pv) 

        if qs.count() == 1: 

            qs[0].delete() 

        elif qs.count() == 0: 

            if not pv.question.multiple_choices: 

                # delete any other choice which might exist 

                qs = AnswerChoice.objects.filter( 

                    response=response, question=pv.question) 

                qs.delete() 

            obj = AnswerChoice(response=response, **pv) 

            obj.full_clean() 

            obj.save() 

        else: 

            raise Exception( 

                "Oops, %s returned %d rows." % (qs.query, qs.count())) 

        ar.success(refresh=True) 

        # dd.logger.info("20140930 %s", obj) 

 

 

@dd.python_2_unicode_compatible 

class Response(UserAuthored, mixins.Registrable): 

 

    class Meta(object): 

        app_label = 'polls' 

        verbose_name = _("Response") 

        verbose_name_plural = _("Responses") 

        ordering = ['date'] 

 

    poll = dd.ForeignKey('polls.Poll', related_name='responses') 

    date = models.DateField(_("Date"), default=dd.today) 

    state = ResponseStates.field(default=ResponseStates.draft.as_callable) 

    remark = models.TextField(verbose_name=_("My general remark"), blank=True) 

    partner = dd.ForeignKey('contacts.Partner', blank=True, null=True) 

 

    toggle_choice = ToggleChoice() 

 

    @dd.chooser() 

    def poll_choices(cls): 

        return Poll.objects.filter(state=PollStates.published) 

 

    def __str__(self): 

        if self.partner is None: 

            return _("%(user)s's response to %(poll)s") % dict( 

                user=self.user, poll=self.poll) 

        return _("{poll} {partner} {date}").format( 

            user=self.user.initials, 

            date=dd.fds(self.date), 

            partner=self.partner.get_full_name(salutation=False), 

            poll=self.poll) 

 

    @classmethod 

    def get_registrable_fields(model, site): 

        for f in super(Response, model).get_registrable_fields(site): 

            yield f 

        yield 'user' 

        yield 'poll' 

        yield 'date' 

        yield 'partner' 

 

 

class ResponseDetail(dd.DetailLayout): 

    main = "answers more" 

    answers = dd.Panel(""" 

    poll partner date workflow_buttons 

    polls.AnswersByResponse 

    """, label=_("General")) 

    more = dd.Panel(""" 

    user state 

    remark 

    """, label=_("More")) 

 

 

class Responses(dd.Table): 

    required_roles = dd.required(PollsUser) 

    model = 'polls.Response' 

    detail_layout = ResponseDetail() 

    insert_layout = """ 

    user date 

    poll 

    """ 

 

 

class AllResponses(Responses): 

    required_roles = dd.required(PollsStaff) 

 

 

class MyResponses(ByUser, Responses): 

    column_names = 'date poll state remark *' 

 

 

class ResponsesByPoll(Responses): 

    master_key = 'poll' 

    column_names = 'date user state partner remark *' 

 

 

class ResponsesByPartner(Responses): 

    """Show all responses for a given partner.  Default view is 

    :meth:`get_slave_summary`. 

 

    """ 

    master_key = 'partner' 

    column_names = 'date user state remark *' 

    slave_grid_format = 'summary' 

 

    @classmethod 

    def get_slave_summary(self, obj, ar): 

        """Displays a summary of all responses for a given partner using a 

        bullet list grouped by poll. 

 

        """ 

        if obj is None: 

            return 

 

        visible_polls = Poll.objects.filter(state__in=( 

            PollStates.published, PollStates.closed)).order_by('ref') 

 

        qs = Response.objects.filter(partner=obj).order_by('date') 

        polls_responses = {} 

        for resp in qs: 

            polls_responses.setdefault(resp.poll.pk, []).append(resp) 

 

        items = [] 

        for poll in visible_polls: 

            iar = self.insert_action.request_from( 

                ar, obj, known_values=dict(poll=poll)) 

            elems = [str(poll), ' : '] 

            responses = polls_responses.get(poll.pk, []) 

            elems += join_elems( 

                [ar.obj2html(r, dd.fds(r.date)) 

                 for r in responses], sep=', ') 

            if poll.state == PollStates.published: 

                elems += [' ', iar.ar2button()] 

                #elems += [' ', iar.insert_button()] 

            items.append(E.li(*elems)) 

        return E.div(E.ul(*items)) 

 

 

class AnswerChoice(dd.Model): 

 

    class Meta(object): 

        app_label = 'polls' 

        verbose_name = _("Answer Choice") 

        verbose_name_plural = _("Answer Choices") 

        ordering = ['question__seqno'] 

 

    response = models.ForeignKey('polls.Response') 

    question = models.ForeignKey('polls.Question') 

    choice = models.ForeignKey( 

        'polls.Choice', 

        related_name='answers', verbose_name=_("My answer"), 

        blank=True, null=True) 

 

    @dd.chooser() 

    def choice_choices(cls, question): 

        return question.get_choiceset().choices.all() 

 

 

class AnswerChoices(dd.Table): 

    required_roles = dd.required(PollsStaff) 

    model = 'polls.AnswerChoice' 

 

 

@dd.python_2_unicode_compatible 

class AnswerRemark(dd.Model): 

 

    class Meta(object): 

        app_label = 'polls' 

        verbose_name = _("Answer Remark") 

        verbose_name_plural = _("Answer Remarks") 

        ordering = ['question__seqno'] 

 

    response = models.ForeignKey('polls.Response') 

    question = models.ForeignKey('polls.Question') 

    remark = models.TextField(_("My remark"), blank=True) 

 

    def __str__(self): 

        # return _("Remark for {0}").format(self.question) 

        return str(self.question) 

 

 

class AnswerRemarks(dd.Table): 

    required_roles = dd.required(PollsUser) 

    model = 'polls.AnswerRemark' 

    detail_layout = dd.DetailLayout(""" 

    remark 

    response question 

    """, window_size=(60, 10)) 

    hidden_elements = dd.fields_list(AnswerRemark, 'response question') 

    stay_in_grid = True 

 

 

class AnswerRemarksByAnswer(AnswerRemarks): 

    use_as_default_table = False 

    hide_top_toolbar = True 

 

 

class AllAnswerRemarks(AnswerRemarks): 

    required_roles = dd.required(PollsStaff) 

 

 

@dd.python_2_unicode_compatible 

class AnswersByResponseRow(object): 

    """Volatile object to represent the one and only answer to a given 

    question in a given response. 

 

    Used by :class:`AnswersByResponse` whose rows are instances of 

    this. 

 

    """ 

    FORWARD_TO_QUESTION = tuple( 

        "full_clean after_ui_save disable_delete".split()) 

 

    def __init__(self, response, question): 

        self.response = response 

        self.question = question 

        # Needed by AnswersByResponse.get_row_by_pk 

        self.pk = self.id = question.pk 

        try: 

            self.remark = AnswerRemark.objects.get( 

                question=question, response=response) 

        except AnswerRemark.DoesNotExist: 

            self.remark = AnswerRemark( 

                question=question, response=response) 

 

        self.choices = AnswerChoice.objects.filter( 

            question=question, response=response) 

        for k in self.FORWARD_TO_QUESTION: 

            setattr(self, k, getattr(question, k)) 

 

    def __str__(self): 

        if self.choices.count() == 0: 

            return str(_("N/A")) 

        return ', '.join([str(ac.choice) for ac in self.choices]) 

 

 

class AnswerRemarkField(dd.VirtualField): 

    """ 

    An editable virtual field. 

    """ 

    editable = True 

 

    def __init__(self): 

        t = models.TextField(_("My remark"), blank=True) 

        dd.VirtualField.__init__(self, t, None) 

 

    def set_value_in_object(self, ar, obj, value): 

        #~ e = self.get_entry_from_answer(obj) 

        obj.remark.remark = value 

        obj.remark.save() 

 

    def value_from_object(self, obj, ar): 

        #~ logger.info("20120118 value_from_object() %s",dd.obj2str(obj)) 

        #~ e = self.get_entry_from_answer(obj) 

        return obj.remark.remark 

 

 

class AnswersByResponse(dd.VirtualTable): 

    """The table used for answering to a poll. The rows of this table are 

    volatile :class:`AnswersByResponseRow` instances. 

 

    .. attribute:: answer_buttons 

 

        A virtual field that displays the currently selected answer(s) for 

        this question, eventually (if editing is permitted) together with 

        buttons to modify the selection. 

 

    """ 

    label = _("Answers") 

    editable = True 

    master = 'polls.Response' 

    column_names = 'question:40 answer_buttons:30 remark:20 *' 

    variable_row_height = True 

    auto_fit_column_widths = True 

    slave_grid_format = 'summary' 

    # workflow_state_field = 'state' 

 

    remark = AnswerRemarkField() 

 

    @classmethod 

    def get_data_rows(self, ar): 

        response = ar.master_instance 

        if response is None: 

            return 

        for q in rt.modules.polls.Question.objects.filter(poll=response.poll): 

            yield AnswersByResponseRow(response, q) 

 

    @classmethod 

    def get_slave_summary(self, response, ar): 

        """Presents this response as a table with one row per question and one 

        column for each response of the same poll.  The answers for 

        this response are editable if this response is not registered. 

        The answers of other responses are never editable. 

 

        """ 

        if response is None: 

            return 

        if response.poll_id is None: 

            return 

        AnswerRemarks = rt.modules.polls.AnswerRemarksByAnswer 

        all_responses = rt.modules.polls.Response.objects.filter( 

            poll=response.poll).order_by('date') 

        if response.partner: 

            all_responses = all_responses.filter(partner=response.partner) 

        ht = xghtml.Table() 

        ht.attrib.update(cellspacing="5px", bgcolor="#ffffff", width="100%") 

        cellattrs = dict(align="left", valign="top", bgcolor="#eeeeee") 

        headers = [_("Question")] 

        for r in all_responses: 

            if r == response: 

                headers.append(dd.fds(r.date)) 

            else: 

                headers.append(ar.obj2html(r, dd.fds(r.date))) 

        ht.add_header_row(*headers, **cellattrs) 

        ar.master_instance = response  # must set it because 

                                       # get_data_rows() needs it. 

        # 20151211 

        # editable = Responses.update_action.request_from(ar).get_permission( 

        #     response) 

        sar = Responses.update_action.request_from(ar) 

        sar.selected_rows = [response] 

        editable = sar.get_permission() 

 

        kv = dict(response=response) 

        insert = AnswerRemarks.insert_action.request_from( 

            ar, known_values=kv) 

        detail = AnswerRemarks.detail_action.request_from(ar) 

        # editable = insert.get_permission(response) 

        for answer in self.get_data_rows(ar): 

            cells = [self.question.value_from_object(answer, ar)] 

            for r in all_responses: 

                if editable and r == response: 

                    insert.known_values.update(question=answer.question) 

                    detail.known_values.update(question=answer.question) 

                    items = [ 

                        self.answer_buttons.value_from_object(answer, ar)] 

                    if answer.remark.remark: 

                        items += [E.br(), answer.remark.remark] 

                    if answer.remark.pk: 

                        items += [ 

                            ' ', 

                            detail.ar2button( 

                                answer.remark, _("Remark"), 

                                icon_name=None)] 

                            # ar.obj2html(answer.remark, _("Remark"))] 

                    else: 

                        btn = insert.ar2button( 

                            answer.remark, _("Remark"), icon_name=None) 

                        # sar = RemarksByAnswer.request_from(ar, answer) 

                        # btn = sar.insert_button(_("Remark"), icon_name=None) 

                        items += [" (", btn, ")"] 

 

                else: 

                    other_answer = AnswersByResponseRow(r, answer.question) 

                    items = [str(other_answer)] 

                    if other_answer.remark.remark: 

                        items += [E.br(), answer.remark.remark] 

                cells.append(E.p(*items)) 

            ht.add_body_row(*cells, **cellattrs) 

 

        return E.div(ht.as_element(), class_="htmlText") 

 

    @dd.displayfield(_("My answer")) 

    def answer_buttons(self, obj, ar): 

        # assert isinstance(obj, Answer) 

        cs = obj.question.get_choiceset() 

        if cs is None: 

            return '' 

 

        elems = [] 

        pv = dict(question=obj.question) 

 

        ba = Responses.actions.toggle_choice 

        if ba is None: 

            raise Exception("No toggle_choice on {0}?".format(ar.actor)) 

        sar = ba.request_from(ar) 

 

        # print("20150203 answer_buttons({0})".format(sar)) 

 

        # if the response is registered, just display the choice, no 

        # toggle buttons since answer cannot be toggled: 

        # 20151211 

        sar.selected_rows = [obj.response] 

        if not sar.get_permission(): 

            return str(obj) 

 

        AnswerChoice = rt.modules.polls.AnswerChoice 

        for c in cs.choices.all(): 

            pv.update(choice=c) 

            text = str(c) 

            qs = AnswerChoice.objects.filter( 

                response=obj.response, **pv) 

            if qs.count() == 1: 

                text = [E.b('[', text, ']')] 

            elif qs.count() == 0: 

                pass 

            else: 

                raise Exception( 

                    "Oops: %s returned %d rows." % (qs.query, qs.count())) 

            sar.set_action_param_values(**pv) 

            e = sar.ar2button(obj.response, text, style="text-decoration:none") 

            elems.append(e) 

        return E.span(*join_elems(elems), class_="htmlText") 

 

    @classmethod 

    def get_pk_field(self): 

        return Question._meta.pk 

 

    @classmethod 

    def get_row_by_pk(self, ar, pk): 

        response = ar.master_instance 

        #~ if response is None: return 

        q = rt.modules.polls.Question.objects.get(pk=pk) 

        return AnswersByResponseRow(response, q) 

 

    @classmethod 

    def disable_delete(self, obj, ar): 

        return "Not deletable" 

 

    @dd.displayfield(_("Question")) 

    def question(self, obj, ar): 

        if obj.question.number: 

            txt = obj.question.NUMBERED_TITLE_FORMAT % ( 

                obj.question.number, obj.question.title) 

        else: 

            txt = obj.question.title 

 

        attrs = dict(class_="htmlText") 

        if obj.question.details: 

            attrs.update(title=obj.question.details) 

        if obj.question.is_heading: 

            txt = E.b(txt, **attrs) 

        return E.span(txt, **attrs) 

 

 

@dd.python_2_unicode_compatible 

class AnswersByQuestionRow(object): 

    """Volatile object to represent a row of :class:`AnswersByQuestion`. 

 

    """ 

    FORWARD_TO_RESPONSE = tuple( 

        "full_clean after_ui_save disable_delete".split()) 

 

    def __init__(self, response, question): 

        self.response = response 

        self.question = question 

        # Needed by AnswersByQuestion.get_row_by_pk 

        self.pk = self.id = response.pk 

        try: 

            self.remark = AnswerRemark.objects.get( 

                question=question, response=response).remark 

        except AnswerRemark.DoesNotExist: 

            self.remark = '' 

 

        self.choices = AnswerChoice.objects.filter( 

            question=question, response=response) 

        for k in self.FORWARD_TO_RESPONSE: 

            setattr(self, k, getattr(question, k)) 

 

    def __str__(self): 

        if self.choices.count() == 0: 

            return str(_("N/A")) 

        return ', '.join([str(ac.choice) for ac in self.choices]) 

 

 

class AnswersByQuestion(dd.VirtualTable): 

    """The rows of this table are volatile :class:`AnswersByQuestionRow` 

instances. 

 

    """ 

    label = _("Answers") 

    master = 'polls.Question' 

    column_names = 'response:40 answer:30 remark:20 *' 

    variable_row_height = True 

    auto_fit_column_widths = True 

 

    @classmethod 

    def get_data_rows(self, ar): 

        question = ar.master_instance 

        if question is None: 

            return 

        for r in rt.modules.polls.Response.objects.filter(poll=question.poll): 

            yield AnswersByQuestionRow(r, question) 

 

    @dd.displayfield(_("Response")) 

    def response(self, obj, ar): 

        return ar.obj2html(obj.response) 

 

    @dd.displayfield(_("Remark")) 

    def remark(self, obj, ar): 

        return obj.remark 

 

    @dd.displayfield(_("Answer")) 

    def answer(self, obj, ar): 

        return str(obj) 

 

 

class PollResult(Questions): 

    "Shows a summay of responses to this poll." 

    master_key = 'poll' 

    column_names = "question choiceset answers a1" 

 

    # @classmethod 

    # def get_data_rows(self, ar): 

    #     poll = ar.master_instance 

    #     if poll is None: 

    #         return 

    #     for obj in super(PollResult, self).get_request_queryset(ar): 

    #         yield obj 

 

    @dd.virtualfield(dd.ForeignKey('polls.Question')) 

    def question(self, obj, ar): 

        return obj 

 

    @dd.requestfield(_("#Answers")) 

    def answers(self, obj, ar): 

        #~ return ar.spawn(Answer.objects.filter(question=obj)) 

        return AnswerChoices.request(known_values=dict(question=obj)) 

 

    @dd.requestfield(_("A1")) 

    def a1(self, obj, ar): 

        cs = obj.get_choiceset() 

        if cs is not None: 

            c = next(iter(cs.choices.all())) 

            #~ return Answer.objects.filter(question=obj,choice=c) 

            return AnswerChoices.request( 

                known_values=dict(question=obj, choice=c))