Custom template: key for retrieving hashkey value

[venzen]

I've created a custom template as described in the docs at Rendering.

As per the code example I am able to populate the image_url with {{ image }}:

<img src="{{ image }}" alt="captcha" class="captcha" />

Which key do I use to populate the hidden input value (hashkey) of "id_captcha_0" in the following?

<input type="hidden" name="captcha_0" value="{{ ??? }}" required id="id_captcha_0" autocomplete="off">

[mbi]

See Context, one paragraph down in the linked documentation. Is this what you're looking for?

[venzen]

Perhaps I'm not understanding the Context environment so well, but I tried using {{ key }} and {{ hidden_field }}. Both failed to populate the value.

Creating a new key from my view function and passing that in the context, was not accessible to the template.

As I say I might be misunderstanding something. Just to explain: my app function "contact_view()" is rendering an app template called "contact_page.html" which includes the captcha form "custom_captcha_template.html". Somehow, context is visible to the "contact_page.html" but is not being rendered by the custom template.

[mbi]

The custom_captcha_template.html template included from your parent template doesn't get the context from the form rendering, only the form rendering itself does!

You want to define a form, which includes a CaptchaField, as described in the docs

class CustomCaptchaTextInput(CaptchaTextInput):
    template_name = 'custom_field.html'

class CaptchaForm(forms.Form):
    captcha = CaptchaField(widget=CustomCaptchaTextInput) 

Then from either of your templates you render the form, e.g. {{form}} or {{form.as_p}} and the template defined in the customized CaptchaTextInput widget will receive the context variables while being rendered.

[venzen]

Thank you. Your explanation is logical and that is how I understand after reading the docs. I'll check my implementation again.