beginning the model for documents

documents/models.py

 from django.db import models
 
 # Create your models here.
+
+from django.utils import timezone
+from django_hstore import hstore
+
+
+class CorpusType(models.Model):
+    """
+    Web Of Science, Europresse, Pubmed...
+    """
+    def __str__(self):
+        return self.corpus_type
+    corpus_type      = models.CharField(max_length=25, unique=True)
+
+
+class Language(models.Model):
+    """
+    French or english or...
+    """
+    def __str__(self):
+        return self.language
+    language        = models.CharField(max_length=15, unique=True)
+
+
+class Corpus(models.Model):
+    def __str__(self):
+        return self.title
+    corpus_type = models.ForeignKey(CorpusType)
+    language    = models.ForeignKey(Language, blank=True, null=True)
+    date        = models.DateField(default=timezone.now(), verbose_name="Date End")
+
+    title       = models.CharField(max_length=300, blank=True)
+    subtitle    = models.CharField(max_length=300, blank=True)
+    
+    zip_file    = models.FileField(upload_to='documents', blank=True)
+
+    others      = hstore.DictionaryField(blank=True)
+    objects     = hstore.HStoreManager()
+
+
+class Document(models.Model):
+    def __str__(self):
+        return self.title
+    date        = models.DateField(blank=True, null=True)
+    # corpus_source foreign vers corpus
+# unique_id
+
+    authors     = models.ManyToManyField(Author, through='Authored', blank=True)
+    institution = models.ManyToManyField(Institution, blank=True, null=True)
+    
+    name            = models.CharField(help_text="Journal/Seminar/Book Name", max_length=300, blank=True)
+    issue_title     = models.CharField(help_text="Special issue title if any", max_length=250, blank=True)
+    chapter         = models.CharField(max_length=300, blank=True)
+    title           = models.CharField(max_length=300, blank=True)
+    subtitle        = models.CharField(max_length=300, blank=True)
+    source          = models.CharField(max_length=100, blank=True)
+    
+    keywords    = models.CharField(max_length=300, blank=True)
+    bibtex_id   = models.CharField(max_length=50, blank=True)
+    
+    volume      = models.IntegerField(blank=True, null=True)
+    number      = models.IntegerField(blank=True, null=True)
+    start_page  = models.IntegerField(blank=True, null=True)
+    end_page    = models.IntegerField(blank=True, null=True)
+    
+    editors     = models.CharField(verbose_name="Editors Names", max_length=200, blank=True)
+    publisher   = models.CharField(max_length=300, blank=True)
+    country     = models.ForeignKey(Country, blank=True, null=True)
+    address     = models.CharField(max_length=200, blank=True)
+    url         = models.URLField(blank=True)
+    
+    abstract    = models.TextField(blank=True)
+    text        = models.TextField(blank=True)
+    paper       = models.FileField(upload_to='documents', blank=True)
+
+    others      = hstore.DictionaryField(blank=True)
+    objects     = hstore.HStoreManager()
+
+
+# class relation corpus / document (pour enlever des documents d'un corpus)
+
+# table ngrams
+# table relation ngrams / document
+# table relation ngrams / ngrams
+
+
+# table cooccrrences
+# table 
+
+