43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
import logging
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from django import forms
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from django.core.exceptions import ValidationError
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from bulk_email.models import CourseEmailTemplate, COURSE_EMAIL_MESSAGE_BODY_TAG
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log = logging.getLogger(__name__)
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class CourseEmailTemplateForm(forms.ModelForm):
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"""Form providing validation of CourseEmail templates."""
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class Meta:
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model = CourseEmailTemplate
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def _validate_template(self, template):
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"""Check the template for required tags."""
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index = template.find(COURSE_EMAIL_MESSAGE_BODY_TAG)
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if index < 0:
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msg = 'Missing tag: "{}"'.format(COURSE_EMAIL_MESSAGE_BODY_TAG)
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log.warning(msg)
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raise ValidationError(msg)
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if template.find(COURSE_EMAIL_MESSAGE_BODY_TAG, index + 1) >= 0:
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msg = 'Multiple instances of tag: "{}"'.format(COURSE_EMAIL_MESSAGE_BODY_TAG)
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log.warning(msg)
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raise ValidationError(msg)
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# TODO: add more validation here, including the set of known tags
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# for which values will be supplied. (Email will fail if the template
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# uses tags for which values are not supplied.)
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def clean_html_template(self):
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"""Validate the HTML template."""
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template = self.cleaned_data["html_template"]
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self._validate_template(template)
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return template
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def clean_plain_template(self):
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"""Validate the plaintext template."""
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template = self.cleaned_data["plain_template"]
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self._validate_template(template)
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return template
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