output什么接口（Outputting CSV with Django¶）

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导读：Outputting CSV with Django¶...

Outputting CSV with Django¶

This document explains how to output CSV (Comma Separated Values) dynamically

using Django views. To do this, you can either use the Python CSV library or the

Django template system.

Using the template system¶

Alternatively, you can use the Django template system

to generate CSV. This is lower-level than using the convenient Python csv module, but the solution is presented here for completeness.

The idea here is to pass a list of items to your template, and have the

template output the commas in a for loop.

Heres an example, which generates the same CSV file as above:

from django.http import HttpResponse from django.template import loader, Context def some_view(request): # Create the HttpResponse object with the appropriate CSV header. response = HttpResponse(mimetype=text/csv) response[Content-Disposition] = attachment; filename=somefilename.csv # The data is hard-coded here, but you could load it from a database or # some other source. csv_data = ( (First row, Foo, Bar, Baz), (Second row, A, B, C, "Testing", "Heres a quote"), ) t = loader.get_template(my_template_name.txt) c = Context({ data: csv_data, }) response.write(t.render(c)) return response

The only difference between this example and the previous example is that this

one uses template loading instead of the CSV module. The rest of the code --

such as the mimetype=text/csv -- is the same.

Then, create the template my_template_name.txt, with this template code:

{% for row in data %}"{{ row.0|addslashes }}", "{{ row.1|addslashes }}", "{{ row.2|addslashes }}", "{{ row.3|addslashes }}", "{{ row.4|addslashes }}" {% endfor %}

This template is quite basic. It just iterates over the given data and displays

a line of CSV for each row. It uses the addslashes

template filter to

ensure there arent any problems with quotes.

Other text-based formats¶

Notice that there isnt very much specific to CSV here -- just the specific

output format. You can use either of these techniques to output any text-based

format you can dream of. You can also use a similar technique to generate

arbitrary binary data; see Outputting PDFs with Django for an example.

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