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69 lines
2.2 KiB
ReStructuredText
69 lines
2.2 KiB
ReStructuredText
Integration with Django forms
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=============================
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Graphene-Django comes with mutation classes that will convert the fields on Django forms into inputs on a mutation.
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*Note: the API is experimental and will likely change in the future.*
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FormMutation
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------------
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.. code:: python
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class MyForm(forms.Form):
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name = forms.CharField()
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class MyMutation(FormMutation):
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class Meta:
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form_class = MyForm
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``MyMutation`` will automatically receive an ``input`` argument. This argument should be a ``dict`` where the key is ``name`` and the value is a string.
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ModelFormMutation
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-----------------
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``ModelFormMutation`` will pull the fields from a ``ModelForm``.
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.. code:: python
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class Pet(models.Model):
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name = models.CharField()
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class PetForm(forms.ModelForm):
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class Meta:
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model = Pet
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fields = ('name',)
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# This will get returned when the mutation completes successfully
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class PetType(DjangoObjectType):
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class Meta:
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model = Pet
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class PetMutation(DjangoModelFormMutation):
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class Meta:
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form_class = PetForm
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``PetMutation`` will grab the fields from ``PetForm`` and turn them into inputs. If the form is valid then the mutation
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will lookup the ``DjangoObjectType`` for the ``Pet`` model and return that under the key ``pet``. Otherwise it will
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return a list of errors.
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You can change the input name (default is ``input``) and the return field name (default is the model name lowercase).
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.. code:: python
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class PetMutation(DjangoModelFormMutation):
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class Meta:
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form_class = PetForm
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input_field_name = 'data'
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return_field_name = 'my_pet'
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Form validation
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---------------
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Form mutations will call ``is_valid()`` on your forms.
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If the form is valid then ``form_valid(form, info)`` is called on the mutation. Override this method to change how
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the form is saved or to return a different Graphene object type.
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If the form is *not* valid then a list of errors will be returned. These errors have two fields: ``field``, a string
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containing the name of the invalid form field, and ``messages``, a list of strings with the validation messages.
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