Override in the widget attributes the max_length set on the Model

Question

In the Model I set the maxlength of the field:

short_description = models.CharField(max_length=405)

In the ModelForm in the widget attributes I set minlength an maxlength:

class ItemModelForm(forms.ModelForm):
    class Meta:
        model = Item
        fields = ['name', 'short_description', 'description']
    widgets = {
            'name': TextInputWidget(attrs={'placeholder': 'Name*'}),
        'short_description': TextareaWidget(attrs={'minlength': 200, 'maxlength': 400})

}

The issue in the HTML the minlegth is from the widget, but maxlength is still taken from the model(405 instead of 400).

I want the widget attribute to overwrite the model attribute.

@Exprator it is a normal ModelForm – user3541631 Feb 16 '18 at 09:21 — user3541631, Feb 16 '18 at 09:21

score 5 · Accepted Answer · answered Feb 16 '18 at 09:25

5

The widgets property in the Meta class modify only, well, the widgets, not the field attributes itself. What you have to do is redefine your model form field.

class ItemModelForm(forms.ModelForm):
    short_description = forms.CharField(max_length=400, min_length=200, widget=TextareaWidget())

    class Meta:
        model = Item
        fields = ['name', 'short_description', 'description']
        widgets = {
            'name': TextInputWidget(attrs={'placeholder': 'Name*'}),
        }

answered Feb 16 '18 at 09:25

Vitor Freitas

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actually it added minlenght (but this didn't existed on the model) – user3541631 Feb 16 '18 at 09:37
But you added the minlength youself in your code snippet, I just replicated what you had: `'short_description': TextareaWidget(attrs={'minlength': 200, 'maxlength': 400}) `. If you don't need the `min_length`, just remove it: `short_description = forms.CharField(max_length=400, widget=TextareaWidget())` – Vitor Freitas Feb 16 '18 at 09:39

score 1 · Answer 2 · answered Feb 16 '18 at 09:35

class ItemModelForm(forms.ModelForm):
    short_description = forms.CharField(
        max_length = 400,
        min_length = 200,
        widget=forms.Textarea(
        )
    )

    class Meta:
        model = Item
        fields = ['name', 'short_description', 'description']
        widgets = {
        'name': TextInputWidget(attrs={'placeholder': 'Name*'}),
        }

Override in the widget attributes the max_length set on the Model

2 Answers2