Creating and inserting django--many table

Create a table

# -Many relationship between the author and the book     
class Author (models.Model):
     '' ' 
    On the Table 
    ' '' 
    NID = models.AutoField (primary_key = True) 
    name = models.CharField (verbose_name = ' Author ' , 32 = max_length )
     # the first way to create ManyToManyField directly in the field of the table (ORM will automatically help us create the third table recommend this approach) 
    author2books = models.ManyToManyField (to = ' Books ' ) 



class Books (Models. Model):
     '' ' 
    title of the book 
    ' '' 
    NID = models.AutoField (primary_key = True) 
    titleModels.CharField = (the verbose_name = ' book name ' , MAX_LENGTH = 32 ) 
    PID = models.ForeignKey (= the verbose_name ' Press ID ' , to = ' Press ' , to_field = ' NID ' , on_delete = models.CASCADE) 

# of create a third table two clock manually 
# class Books2Author (models.Model): 
#      '' ' 
#      book of correspondence table 
#      ' '' 
#      NID = models.AutoField (primary_key = True) 
#      the AID = models.ForeignKey (verbose_name = 'author ID', to = 'author' , to_field = 'nid')
#     bid = models.ForeignKey(verbose_name='书籍ID',to='Books',to_field='nid')

Adding data

# Editorial writers 
DEF edit_author (Request):
     # Get Authors ID 
    the above mentioned id = request.GET.get ( ' the above mentioned id ' )
     # get all the books 
    books_lst = models.Books.objects.all ()
     # according to the authors of the object ID to get 
    author_info = models.Author.objects.filter (PK = the above mentioned id) .first () 

    IF request.method == ' POST ' :
         # retrieve a front passed over the name of the new 
        name = request.POST.get ( ' name ' )
         # get the front end books pass over the 
        book_lst = request.POST.getlist ( ' Books' )
         # Under the new name, update the current name 
        author_info.name = name
         # save data 
        author_info.save ()
         # the SET will remove the current method of all original books, and then insert the tip passes over a list of books (parameter list type) 
        author_info.author2books.set (book_lst)
         # the Add method will add to the front passing over books and books of correspondence table. If duplicate records are given insert (parameters for individual elements, can be inserted into a plurality of) 
        # author_info.author2books.add (* book_lst) 
        return the redirect ( ' / author_lst / ' ) 

    return the render (Request, ' edit_author.html ' , { ' books_lst ' : books_lst, ' author_info':author_info})