Re: Bulk import of data

On Fri, Nov 25, 2011 at 2:03 PM, Fabio Natali <fabio@fnstudio.it> wrote:
> Hi everybody!
>
> I have a CSV file and have to import it in my Django website.
>
> Say I have three models involved: category, sub_category and product.
>
> ### models.py ###
> class Category(models.Model):
>    name = models.CharField(max_lenth=100)
>
> class SubCategory(models.Model):
>    name = models.CharField(max_length=100)
>    parent_category = models.ForeignKey(Category)
>
> class Product(models.Model):
>    name = models.CharField(max_length=200)
>    sub_category = models.ForeignKey(SubCategory)
> ##########
>
>
> Say this is my CSV file (category, sub_category, product):
>
> ### file.csv ###
> clothing man;trousers;levis 501
> clothing woman;shirt;nice shirt
> [...]
> ##########
>
>
> I am not sure on which way to go. Do you have any hints or web references to
> look at?
>

It's not that tricky, is it?

Read the CSV file, split out the fields.
Get or create the category
Get or create the subcategory
Get or create the product

in code:

import csv
data = csv.reader(open('/path/to/csv', 'r'), delimiter=';')
for row in data:
category = Category.objects.get_or_create(name=row[0])
sub_category = SubCategory.objects.get_or_create(name=row[1],
defaults={'parent_category': category})
product = Product.objects.get_or_create(name=row[2],
defaults={'sub_category': sub_category})

http://docs.python.org/library/csv.html

Cheers

Tom

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