dynamic textarea filled with API response on load

[lsmith77]

I am building a "rule editor" for NLP purposes. I want to give editors the ability to see "in real time" (after saving), how their rule would work in practice for training sentences they have added to the rule.

ie. a Rule admin form, contains a one2many inline TrainingSentence form

I am hoping to use your package to add a dynamic textarea field "response" that is populated on load with the JSON response from the NLP system for each sentence.

But I am unsure how to construct the DynamicField so that it reads the data from the rule property so that I can call my get_json() helper function to fetch the JSON to set as the initial value for the response dynamic field.

class TrainingSentence(models.Model):
    rule = models.ForeignKey(Rule, on_delete=models.CASCADE)

class TrainingSentenceForm(DynamicFormMixin, forms.ModelForm):
    response = DynamicField(..)

Any advice would be greatly appreciated.

Note: Eventually I might just do this via AJAX, but I am hoping to stick to just backend logic for now.

[lsmith77]

I have made some progress

    response = DynamicField(
        forms.JSONField,
        initial = get_json(f"/foo?bar")
    )

Now the question is how can I get access to the obj instance.

[lsmith77]

So I think I have a working solution

class TrainingSentenceForm(DynamicFormMixin, forms.ModelForm):
    response = DynamicField(
        forms.JSONField,
        disabled=True,
        required=False,
        initial=lambda form: None
        if form.initial is None or "text" not in form.initial
        else get_json(f"/tokenize?lang=en&text=" + form.initial["text"]),
    )

Via form.initial["rule"] I can also get the ID of the rule. Not as clean as I hoped, but looks like it will work.