CODEWITHSUNDEEP
django
Florin
Florin

Reputation: 4105

ForeignKey relation a better understanding

If there is someone here from the Django world that can teach the best practices regarding field lookups , and how they work . I tried they're documentation but i found it very confusing specially the relation between models and views regarding databases .

For example let's say we have the following structure : How should the view look and what is the best way to approach this kind of situations.

MODELS :

class Article(models.Model):

    Author  = models.CharField(max_length=255)
    Title   = models.CharField(max_length=255)
    Content = models.TextField()



class comments(models.Model):

    TheArticle = models.ForeignKey(Article)
    c_Author   = models.CharField(max_length=255)
    c_Title    = models.CharField(max_length=255)
    c_Content  = models.TextField()

View : 

def page(request , URL_Title ): #comes trough the url setup 
   article = Article.objects.get( Title=URL_Title )
   comments = # What is the Django way in getting the comments for the specified article ?
   return render_to_response('base.html' , {'article':article , 'comments':comments } )

The Themplate :

{% if article %}
 .....Print all the article related fields .....
   {% if comments %}
      {% for comment in comments %}
         .....Print Comment .....
      {% endfor %}
   {% endif %}
{% endif %}

And if you have the time a example on a ManyToMany relation will also help .
Any help is highly appreciated .

Upvotes: 0

Views: 160

Answers (1)

Davor Lucic
Davor Lucic

Reputation: 29380

As noted in Following relationships "backward" it is possible to do so through Manager that will be automatically available on Article model instances. For manipulating related field see ForeingKey.related_name attribute.

article = Article.objects.get( Title=URL_Title )
comments = article.comments_set.all()

Upvotes: 1

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