NewsBlur-viq/apps/profile/forms.py

from django import forms
from vendor.zebra.forms import StripePaymentForm
from django.utils.safestring import mark_safe

PLANS = [
    ("newsblur-premium-12", mark_safe("$12 / year <span class='NB-small'>($1/month)</span>")),
    ("newsblur-premium-24", mark_safe("$24 / year <span class='NB-small'>($2/month)</span>")),
    ("newsblur-premium-36", mark_safe("$36 / year <span class='NB-small'>($3/month)</span>")),
]

class HorizRadioRenderer(forms.RadioSelect.renderer):
    """ this overrides widget method to put radio buttons horizontally
        instead of vertically.
    """
    def render(self):
            """Outputs radios"""
            choices = '\n'.join(['%s\n' % w for w in self])
            return mark_safe('<div class="NB-stripe-plan-choice">%s</div>' % choices)

class StripePlusPaymentForm(StripePaymentForm):
    def __init__(self, *args, **kwargs):
        email = kwargs.pop('email')
        plan = kwargs.pop('plan', '')
        super(StripePlusPaymentForm, self).__init__(*args, **kwargs)
        self.fields['email'].initial = email
        if plan:
            self.fields['plan'].initial = plan

    email = forms.EmailField(widget=forms.TextInput(attrs=dict(maxlength=75)),
                             label='Email address',
                             required=False)
    plan = forms.ChoiceField(required=False, widget=forms.RadioSelect(renderer=HorizRadioRenderer),
                             choices=PLANS, label='Plan')