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models.py
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models.py
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import json
import os
import random
import textwrap
from google.appengine.ext import db
import const
import helpers
class Completed(db.Model):
name = db.StringProperty(required=True)
email = db.StringProperty(required=True)
class Eval(db.Model):
course = db.StringProperty(required=True)
instructor = db.StringProperty(required=True)
instructor_email = db.StringProperty(required=True)
responses = db.BlobProperty(required=True)
sent_results = db.BooleanProperty(default=False)
ta = db.StringProperty(required=True)
ta_email = db.StringProperty(required=True)
@staticmethod
def _construct_response_list():
responses = []
for _, q_type in const.QUESTIONS:
if q_type in [0, 1]:
responses.append([0, 0, 0, 0, 0, 0])
else:
responses.append([])
return json.dumps(responses)
@staticmethod
def create(course, ta, instructor):
key_name = '{}-{}'.format(ta['name'], course)
response_list = Eval._construct_response_list()
obj = Eval(key_name=key_name, course=course,
instructor=instructor['name'],
instructor_email=instructor['email'],
responses=response_list,
ta=ta['name'], ta_email=ta['email'])
obj.put()
@staticmethod
def formatted_question_stats(values):
total = sum(values)
tmp = []
responded = total - values[0]
s = ' ' * 16
for i, count in enumerate(values[1:]):
if count:
s += '%3.0f%% ' % (count * 100. / responded)
tmp.extend([i + 1 for _ in range(count)])
else:
s += ' ' * 5
if responded:
mean = '%.1f' % (sum(tmp) * 1. / responded)
if len(tmp) % 2 == 0:
median = '%.1f' % ((tmp[len(tmp) / 2] +
tmp[len(tmp) / 2 - 1]) / 2.)
else:
median = '%.1f' % tmp[len(tmp) / 2]
else:
mean = median = '-'
s += '| %4d %4d %4s %4s\n\n' % (values[0], total, mean, median)
return s
@staticmethod
def generate_summary(evals, skip=False):
wrapper = textwrap.TextWrapper(width=79)
responses = evals[0].get_responses()
for eval in evals[1:]:
tmp = eval.get_responses()
for q_num, (_, q_type) in enumerate(const.QUESTIONS):
if q_type in [0, 1]:
for r_num in range(len(tmp[q_num])):
responses[q_num][r_num] += tmp[q_num][r_num]
else:
responses[q_num].extend(tmp[q_num])
s = ''
for q_num, (question, q_type) in enumerate(const.QUESTIONS):
if skip and q_type == 2:
continue
wrapper.initial_indent = wrapper.subsequent_indent = ' ' * 8
s += ' %2d. %s\n' % (q_num + 1, wrapper.fill(question)[8:])
wrapper.initial_indent = wrapper.subsequent_indent = ' ' * 11
if q_type in [0, 1]:
s += ' {}\n'.format(const.Q_KEY[q_type])
s += const.Q_H
s += Eval.formatted_question_stats(responses[q_num])
else:
for i, res in enumerate(sorted(responses[q_num])):
tmp = ''
for block in res.split('\n'):
tmp += '{}\n'.format(wrapper.fill(block))
s += '%5s %3d. %s' % (' ', i + 1, tmp[11:])
s += '\n'
return s
@staticmethod
def update(course, ta, responses):
key_name = '{}-{}'.format(ta, course)
obj = Eval.get_by_key_name(key_name)
obj.update_response_list(responses)
obj.put()
def get_responses(self):
return json.loads(self.responses)
def update_response_list(self, responses):
current = json.loads(self.responses)
for i, (_, q_type) in enumerate(const.QUESTIONS):
response = responses[i].strip()
if not response:
continue
if q_type in [0, 1]:
current[i][int(response)] += 1
else:
current[i].append(response)
self.responses = json.dumps(current)
class EvalInvite(db.Model):
course = db.StringProperty(required=True)
email = db.StringProperty(required=True)
email_sent = db.DateTimeProperty()
name = db.StringProperty(required=True)
tas = db.StringListProperty(required=True)
@property
def url(self):
return 'https://{}/eval/{}'.format(os.environ['HTTP_HOST'],
self.key().name())
@staticmethod
def create(course, student, tas):
cur = None, None
while cur != (student['email'], course):
key_name = hex(random.randint(0, 0xFFFFFFFF))[2:]
tmp = EvalInvite.get_or_insert(key_name, course=course,
email=student['email'],
name=student['name'], tas=tas)
cur = tmp.email, tmp.course
return tmp
def __lt__(self, other):
return self.course == helpers.nsorted((self.course, other.course))[0]
def remaining_evals(self):
query = EvalInvite.all()
query.filter('__key__ !=', self.key())
query.filter('email', self.email)
remaining = []
[remaining.append(invite) for invite in query if len(invite.tas)]
return sorted(remaining)
class Settings(db.Model):
admin_email = db.StringProperty(required=True)
expire_date = db.DateTimeProperty(required=True)
send_completed_email = db.BooleanProperty(default=False)