3 # Copyright (C) 2012 FinalsClub Foundation
6 Models for the courses django app.
7 Handles courses, and their related models
8 Courses are the first class object, they contain notes.
9 Courses have a manytoone relation to schools.
13 from django.db import models
14 from django.template import defaultfilters
15 from karmaworld.settings.manual_unique_together import auto_add_check_unique_together
18 class School(models.Model):
19 """ A grouping that contains many courses """
20 name = models.CharField(max_length=255)
21 slug = models.SlugField(max_length=150, null=True)
22 location = models.CharField(max_length=255, blank=True, null=True)
23 url = models.URLField(max_length=511, blank=True)
24 # Facebook keeps a unique identifier for all schools
25 facebook_id = models.BigIntegerField(blank=True, null=True)
26 # United States Department of Education institution_id
27 usde_id = models.BigIntegerField(blank=True, null=True)
28 file_count = models.IntegerField(default=0)
29 priority = models.BooleanField(default=0)
30 alias = models.CharField(max_length=255, null=True, blank=True)
31 hashtag = models.CharField(max_length=16, null=True, blank=True, help_text='School abbreviation without #')
34 """ Sort School by file_count descending, name abc=> """
35 ordering = ['-file_count','-priority', 'name']
38 def __unicode__(self):
41 def save(self, *args, **kwargs):
42 """ Save school and generate a slug if one doesn't exist """
44 self.slug = defaultfilters.slugify(self.name)
45 super(School, self).save(*args, **kwargs)
48 def autocomplete_search_fields():
49 return ("name__icontains",)
51 def update_note_count(self):
52 """ Update the School.file_count by summing the
53 contained course.file_count
55 self.file_count = sum([course.file_count for course in self.course_set.all()])
59 class Course(models.Model):
60 """ First class object that contains many notes.Note objects """
62 name = models.CharField(max_length=255)
63 slug = models.SlugField(max_length=150, null=True)
64 school = models.ForeignKey(School) # Should this be optional ever?
65 file_count = models.IntegerField(default=0)
67 desc = models.TextField(max_length=511, blank=True, null=True)
68 url = models.URLField(max_length=511, blank=True, null=True)
69 academic_year = models.IntegerField(blank=True, null=True,
70 default=datetime.datetime.now().year)
72 instructor_name = models.CharField(max_length=255, blank=True, null=True)
73 instructor_email = models.EmailField(blank=True, null=True)
75 updated_at = models.DateTimeField(default=datetime.datetime.utcnow)
77 created_at = models.DateTimeField(auto_now_add=True)
79 # Number of times this course has been flagged as abusive/spam.
80 flags = models.IntegerField(default=0,null=False)
84 ordering = ['-file_count', 'school', 'name']
85 unique_together = ('school', 'name', 'instructor_name')
86 verbose_name = 'course'
87 verbose_name_plural = 'courses'
89 def __unicode__(self):
90 return u"{0}: {1}".format(self.name, self.school)
92 def get_absolute_url(self):
93 """ return url based on school slug and self slug """
94 return u"/{0}/{1}".format(self.school.slug, self.slug)
96 def save(self, *args, **kwargs):
97 """ Save school and generate a slug if one doesn't exist """
98 super(Course, self).save(*args, **kwargs) # generate a self.id
100 self.slug = defaultfilters.slugify("%s %s" % (self.name, self.id))
101 self.save() # Save the slug
103 def get_updated_at_string(self):
104 """ return the formatted style for datetime strings """
105 return self.updated_at.strftime("%I%p // %a %b %d %Y")
108 def autocomplete_search_fields():
109 return ("name__icontains",)
111 def update_note_count(self):
112 """ Update self.file_count by summing the note_set """
113 self.file_count = self.note_set.count()
117 # Enforce unique constraints even when we're using a database like
118 # SQLite that doesn't understand them
119 auto_add_check_unique_together(Course)