我想为调查设计特定的布局：在左侧的问题，在右侧的5个“选择”的可能选择（它们都已标准化，因此范围从“我强烈同意”到“我强烈不同意”）。这是我的代码的一部分
Models.py：
from otree.api import (
models, widgets, BaseConstants, BaseSubsession, BaseGroup, BasePlayer,
Currency as c, currency_range
)
import random
def make_field_5point(label):
return models.IntegerField(
choices=[
[1, ''],
[2, ''],
[3, ''],
[4, ''],
[5, '']],
label=label,
widget=widgets.RadioSelect,
blank=False
)
def make_field_5point_reversed(label):
return models.IntegerField(
choices=[
[5, ''],
[4, ''],
[3, ''],
[2, ''],
[1, '']],
label=label,
widget=widgets.RadioSelect,
blank=False
)
class Constants(BaseConstants):
name_in_url = 'survey'
players_per_group = None
num_rounds = 1
class Player(BasePlayer):
Con1 = make_field_5point('works in-depth')
Ext1 = make_field_5point('is communicative, sociable')
问题在Class Player（BasePlayer）中
Pages.py：
from django import forms
import random
from random import shuffle
from ._builtin import Page, WaitPage
from .models import Constants
class StartSurvey(Page):
pass
class Personality(Page):
form_model = 'player'
form_fields = ['Con1',
'Ext1']
def get_form_fields(self):
fields = self.form_fields
random.shuffle(fields)
class End(Page):
pass
return fields
page_sequence = [
StartSurvey,
Personality,
End,]
HTML
{% extends "global/Page.html" %} {% load otree static %} {% block title %} {% endblock %} {% block content %}
Please select your stance:
{% for field in form %} {% for choice in field %} {% endfor %} {% endfor %}
I strongly disagree I disagree Neither agree nor disagree I agree I strongly agree
{{ field.label }} {{ choice }}
{% next_button %} {% endblock %}
如果我想参加调查，则会收到以下错误消息：无效的变量：field.label。错误出现在第7行，带有{{field.labe}}和{{choice}}
但是我不明白为什么，因为我在函数中定义了它们...
追踪：
Traceback:
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in _resolve_lookup
829. current = current[bit]
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\context.py" in __getitem__
83. raise KeyError(key)
During handling of the above exception ('field'), another exception occurred:
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in _resolve_lookup
835. if isinstance(current, BaseContext) and getattr(type(current), bit):
During handling of the above exception (type object 'RequestContext' has no attribute 'field'), another exception occurred:
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in _resolve_lookup
843. current = current[int(bit)]
During handling of the above exception (invalid literal for int() with base 10: 'field'), another exception occurred:
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in resolve
671. obj = self.var.resolve(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in resolve
796. value = self._resolve_lookup(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in _resolve_lookup
850. (bit, current)) # missing attribute
During handling of the above exception (Failed lookup for key [field] in [{'True': True, 'False': False, 'None': None}, {}, {}, {'form': <PlayerForm bound=False, valid=False, fields=(Agr2;Ext3;Ope1;Neu3_rev;Agr3;Con1;Con2_rev;Ext2_rev;Ope3;Ext1;Neu2;Con3;Agr1_rev;Ope2;Neu1)>, 'view': <survey.pages.Personality object at 0x000001FC923D1978>, 'object': <Player 1>, 'player': <Player 1>, 'group': <Group pk=173>, 'subsession': <Subsession pk=173>, 'session': <Session pk=650>, 'participant': <Participant pk=1675>, 'Constants': <class 'survey.models.Constants'>, 'timer_text': 'Time left to complete this page:', 'javascript_vars': dict_items([])}]), another exception occurred:
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree\views\abstract.py" in dispatch
284. response.render()
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\response.py" in render
106. self.content = self.rendered_content
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\response.py" in rendered_content
83. content = template.render(context, self._request)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\backends\django.py" in render
61. return self.template.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in render
171. return self._render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in _render
163. return self.nodelist.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree\strict_templates.py" in render_annotated
95. return self.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\loader_tags.py" in render
150. return compiled_parent._render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in _render
163. return self.nodelist.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree\strict_templates.py" in render_annotated
95. return self.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\loader_tags.py" in render
150. return compiled_parent._render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in _render
163. return self.nodelist.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree\strict_templates.py" in render_annotated
95. return self.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\loader_tags.py" in render
150. return compiled_parent._render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in _render
163. return self.nodelist.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree\strict_templates.py" in render_annotated
95. return self.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\loader_tags.py" in render
62. result = block.nodelist.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree\strict_templates.py" in render_annotated
95. return self.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\loader_tags.py" in render
62. result = block.nodelist.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree\strict_templates.py" in render_annotated
95. return self.render(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in render
987. output = self.filter_expression.resolve(context)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree\strict_templates.py" in resolve
40. return original_resolve(self, context, ignore_failures=False)
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\django\template\base.py" in resolve
679. return string_if_invalid % self.var
File "c:\users\wiwi-admin\appdata\local\programs\python\python37\lib\site-packages\otree_startup\settings.py" in __mod__
219. raise InvalidVariableError(msg) from None
Exception Type: InvalidVariableError at /p/8rgqwbh3/survey/Personality/2/
Exception Value: Invalid variable: field.label
您正在field块外部使用模板变量{% for field in form %}。
使用类似以下内容修改HTML模板：
{% extends "global/Page.html" %}
{% load otree static %}
{% block title %} {% endblock %}
{% block content %}
Please select your stance:
{% for field in form %}
{% for choice in field %}
{{ field.label }} <<<<<<<<<<< The 'field' variable is define here
{% endfor %}
{% endfor %}
{% next_button %} {% endblock %}