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Diffstat (limited to 'tests/modeltests/model_forms/models.py')
| -rw-r--r-- | tests/modeltests/model_forms/models.py | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/tests/modeltests/model_forms/models.py b/tests/modeltests/model_forms/models.py new file mode 100644 index 0000000000..5ffd6aac9f --- /dev/null +++ b/tests/modeltests/model_forms/models.py @@ -0,0 +1,113 @@ +""" +34. Generating HTML forms from models + +Django provides shortcuts for creating Form objects from a model class. + +The function django.newforms.form_for_model() takes a model class and returns +a Form that is tied to the model. This Form works just like any other Form, +with one additional method: create(). The create() method creates an instance +of the model and returns that newly created instance. It saves the instance to +the database if create(save=True), which is default. If you pass +create(save=False), then you'll get the object without saving it. +""" + +from django.db import models + +class Category(models.Model): + name = models.CharField(maxlength=20) + url = models.CharField('The URL', maxlength=40) + + def __str__(self): + return self.name + +class Article(models.Model): + headline = models.CharField(maxlength=50) + pub_date = models.DateTimeField() + categories = models.ManyToManyField(Category) + + def __str__(self): + return self.headline + +__test__ = {'API_TESTS': """ +>>> from django.newforms import form_for_model, BaseForm + +>>> Category.objects.all() +[] + +>>> CategoryForm = form_for_model(Category) +>>> f = CategoryForm() +>>> print f +<tr><th><label for="id_name">Name:</label></th><td><input id="id_name" type="text" name="name" maxlength="20" /></td></tr> +<tr><th><label for="id_url">The URL:</label></th><td><input id="id_url" type="text" name="url" maxlength="40" /></td></tr> +>>> print f.as_ul() +<li><label for="id_name">Name:</label> <input id="id_name" type="text" name="name" maxlength="20" /></li> +<li><label for="id_url">The URL:</label> <input id="id_url" type="text" name="url" maxlength="40" /></li> +>>> print f['name'] +<input id="id_name" type="text" name="name" maxlength="20" /> + +>>> f = CategoryForm(auto_id=False) +>>> print f.as_ul() +<li>Name: <input type="text" name="name" maxlength="20" /></li> +<li>The URL: <input type="text" name="url" maxlength="40" /></li> + +>>> f = CategoryForm({'name': 'Entertainment', 'url': 'entertainment'}) +>>> f.errors +{} +>>> f.clean_data +{'url': u'entertainment', 'name': u'Entertainment'} +>>> obj = f.create() +>>> obj +<Category: Entertainment> +>>> Category.objects.all() +[<Category: Entertainment>] + +>>> f = CategoryForm({'name': "It's a test", 'url': 'test'}) +>>> f.errors +{} +>>> f.clean_data +{'url': u'test', 'name': u"It's a test"} +>>> obj = f.create() +>>> obj +<Category: It's a test> +>>> Category.objects.all() +[<Category: Entertainment>, <Category: It's a test>] + +>>> f = CategoryForm({'name': 'Third test', 'url': 'third'}) +>>> f.errors +{} +>>> f.clean_data +{'url': u'third', 'name': u'Third test'} +>>> obj = f.create(save=False) +>>> obj +<Category: Third test> +>>> Category.objects.all() +[<Category: Entertainment>, <Category: It's a test>] +>>> obj.save() +>>> Category.objects.all() +[<Category: Entertainment>, <Category: It's a test>, <Category: Third test>] + +>>> f = CategoryForm({'name': '', 'url': 'foo'}) +>>> f.errors +{'name': [u'This field is required.']} +>>> f.clean_data +>>> f.create() +Traceback (most recent call last): +... +ValueError: The Category could not be created because the data didn't validate. + +>>> f = CategoryForm({'name': '', 'url': 'foo'}) +>>> f.create() +Traceback (most recent call last): +... +ValueError: The Category could not be created because the data didn't validate. + +You can pass a custom Form class to form_for_model. Make sure it's a +subclass of BaseForm, not Form. +>>> class CustomForm(BaseForm): +... def say_hello(self): +... print 'hello' +>>> CategoryForm = form_for_model(Category, form=CustomForm) +>>> f = CategoryForm() +>>> f.say_hello() +hello +"""} |
