I have a form in my django app where users can upload files.
How can i set a limit to the uploaded file size so that if a user uploads a file larger than my limit the form won't be valid and it will throw an error?
You can use this snippet formatChecker. What it does is
it lets you specify what file formats are allowed to be uploaded.
and lets you set the limit of file size of the file to be uploaded.
First. Create a file named formatChecker.py inside the app where the you have the model that has the FileField that you want to accept a certain file type.
This is your formatChecker.py:
from django.db.models import FileField
from django.forms import forms
from django.template.defaultfilters import filesizeformat
from django.utils.translation import ugettext_lazy as _
class ContentTypeRestrictedFileField(FileField):
"""
Same as FileField, but you can specify:
* content_types - list containing allowed content_types. Example: ['application/pdf', 'image/jpeg']
* max_upload_size - a number indicating the maximum file size allowed for upload.
2.5MB - 2621440
5MB - 5242880
10MB - 10485760
20MB - 20971520
50MB - 5242880
100MB - 104857600
250MB - 214958080
500MB - 429916160
"""
def __init__(self, *args, **kwargs):
self.content_types = kwargs.pop("content_types", [])
self.max_upload_size = kwargs.pop("max_upload_size", 0)
super(ContentTypeRestrictedFileField, self).__init__(*args, **kwargs)
def clean(self, *args, **kwargs):
data = super(ContentTypeRestrictedFileField, self).clean(*args, **kwargs)
file = data.file
try:
content_type = file.content_type
if content_type in self.content_types:
if file._size > self.max_upload_size:
raise forms.ValidationError(_('Please keep filesize under %s. Current filesize %s') % (filesizeformat(self.max_upload_size), filesizeformat(file._size)))
else:
raise forms.ValidationError(_('Filetype not supported.'))
except AttributeError:
pass
return data
Second. In your models.py, add this:
from formatChecker import ContentTypeRestrictedFileField
Then instead of using 'FileField', use this 'ContentTypeRestrictedFileField'.
Example:
class Stuff(models.Model):
title = models.CharField(max_length=245)
handout = ContentTypeRestrictedFileField(upload_to='uploads/', content_types=['video/x-msvideo', 'application/pdf', 'video/mp4', 'audio/mpeg', ],max_upload_size=5242880,blank=True, null=True)
You can change the value of 'max_upload_size' to the limit of file size that you want. You can also change the values inside the list of 'content_types' to the file types that you want to accept.