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copied!<p>I know this over a year old now but thought it may still be helpful to attempt an answer.</p> <p>I believe there may be a couple of issues here, but the main issue at hand is that the ModelForm is expecting a key to the database record not a string value.</p> <p>I would suggest making a Form instead of ModelForm, if you are making a form that isn't relating to your database. But if you do want to interact with your database then use the ModelForm and and define a ForeignKey in your Student model to relate to the language table, letting the ModelForm do the work for you.</p> <p>Example app based on my assumptions of your model.</p> <p><em><code>your_project/example_app/models.py:</code></em></p> <pre><code>from django.db import models class Student(models.Model): name = models.CharField(max_length=255) language = models.ForeignKey('Language') class Language(models.Model): name = models.CharField(max_length=255) </code></pre> <p><em><code>your_project/example_app/forms.py:</code></em></p> <pre><code>from django.forms import ModelForm from example.models import Student class StudentForm(ModelForm): class Meta: model = Student </code></pre> <p>Relevant docs: <a href="https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#modelform" rel="nofollow noreferrer">https://docs.djangoproject.com/en/dev/topics/forms/modelforms/#modelform</a></p> <p>snippet:</p> <blockquote> <p>As you might expect, the ForeignKey and ManyToManyField model field types are special cases:</p> <p>ForeignKey is represented by <code>django.forms.ModelChoiceField</code>, which is a ChoiceField whose choices are a model QuerySet. ManyToManyField is represented by <code>django.forms.ModelMultipleChoiceField</code>, which is a MultipleChoiceField whose choices are a model QuerySet.</p> </blockquote>

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