Django File upload size limit

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 FileFieldfrom django.forms import formsfrom django.template.defaultfilters import filesizeformatfrom 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.

another solution is using validators

from django.core.exceptions import ValidationErrordef file_size(value): # add this to some file where you can import it from    limit = 2 * 1024 * 1024    if value.size > limit:        raise ValidationError('File too large. Size should not exceed 2 MiB.')

then in your form with the File field you have something like this

image = forms.FileField(required=False, validators=[file_size])

This code might help:

# Add to your settings fileCONTENT_TYPES = ['image', 'video']# 2.5MB - 2621440# 5MB - 5242880# 10MB - 10485760# 20MB - 20971520# 50MB - 5242880# 100MB 104857600# 250MB - 214958080# 500MB - 429916160MAX_UPLOAD_SIZE = "5242880"#Add to a form containing a FileField and change the field names accordingly.from django.template.defaultfilters import filesizeformatfrom django.utils.translation import ugettext_lazy as _from django.conf import settingsdef clean_content(self):    content = self.cleaned_data['content']    content_type = content.content_type.split('/')[0]    if content_type in settings.CONTENT_TYPES:        if content._size > settings.MAX_UPLOAD_SIZE:            raise forms.ValidationError(_('Please keep filesize under %s. Current filesize %s') % (filesizeformat(settings.MAX_UPLOAD_SIZE), filesizeformat(content._size)))    else:        raise forms.ValidationError(_('File type is not supported'))    return content

Taken from: Django Snippets - Validate by file content type and size