django-forms

问题 I have multiple forms on my site that work and save info to my PostgreSQL database. I am trying to create a form to save information for my Set Model: class Set(models.Model): settitle = models.CharField("Title", max_length=50) setdescrip = models.CharField("Description", max_length=50) action = models.ForeignKey(Action) actorder = models.IntegerField("Order number") The Set Form looks like this. I am using ModelChoiceField to pull a list of Action name fields from the Action model, this

问题 I am trying to add an editable=False field to a custom admin form, but I am getting an error: django.core.exceptions.FieldError: 'help_num' cannot be specified for Investigation model form as it is a non-editable field This is true, in my model I have it set as such: models.py help_num = models.CharField(max_length=17, unique=True, default=increment_helpdesk_number, editable=False) forms.py class HelpDeskModelForm(forms.ModelForm): class Meta: model = HelpDesk fields = [ "help_num", "help

问题 So there exists a snippet here: I was going tor reuse this, but when I declare this in my forms.py, and I render the html.. submit_button = SubmitButtonField() value is not supplied (it's escaped to string None ), while name is default to submit_button , probably because of the forms.Widget constructor. How can I supply the name and the value? I tried to write an init method for the widget... def __init__(self, name, value, label, attrs): print '%s, %s, %s, %s' %(name, value, label, attrs)

问题 I have a form with a select list. When the user selects a value of 8888 or 9999 from the award_grant_type select list, I want some of the data that may or may not exist in the form input fields (the user may have entered data into the form text input fields and then selected 8888 or 9999) to be deleted before the form data is commited to the database. So I have the following model.py code: ..... DISPLAY_ONLY_AWARD_AND_GRANT_DESCRIPTION_WITH_PROMPT = 8888 DISPLAY_ONLY_AWARD_AND_GRANT

问题 I have a form with a select list. When the user selects a value of 8888 or 9999 from the award_grant_type select list, I want some of the data that may or may not exist in the form input fields (the user may have entered data into the form text input fields and then selected 8888 or 9999) to be deleted before the form data is commited to the database. So I have the following model.py code: ..... DISPLAY_ONLY_AWARD_AND_GRANT_DESCRIPTION_WITH_PROMPT = 8888 DISPLAY_ONLY_AWARD_AND_GRANT

问题 I've got a form like this: class SomeForm(forms.Form): first = forms.IntegerField(max_value= DontWantToSetYet) second = forms.IntegerField(max_value= DontWantToSetYet) third = forms.IntegerField(max_value= DontWantToSetYet) How can I set the max_values at runtime? I.E if request.method == 'POST': form = SomeForm(request.POST, max_values = {'first':10,'second':50,'third':666}) [...] 回答1: you can set the max values on fields in the __init__ method, as shown here class SomeForm(forms.Form): def

问题 I'm writing the custom modelformset. I need that forms to be sorted by value of field "ordering". I overloaded __iter__ method of BaseFormSet in my child formset class. My class inherited from BaseFormSet: class SortedCatForms(BaseFormSet): def __iter__(self): return iter(self.forms.sort( key=lambda form: form['ordering'].value())) #line 38, the problem line. def __getitem__(self, index): return list(self)[index] I use it in my modelformset: OrderCatsFormSet = modelformset_factory

问题 I'm using Django to write a blog app, and I'm trying to implement a hierarchical category structure. Each category has a "parent" ForeignKey pointing back to the same Category model. I want to allow admins to add categories, and I want the interface to allow them to select a category's parent category. However, I want to avoid I'm-my-own-grandpa situations, so I want to limit the available choices of categories to those which do not have category in question as an ancestor. Right now, I'm

问题 I have a model with a few unique fields and I'm writing a form for it. I found some reference to the [validate_unique][1] method that should check for uniqueness on fields when you call it but my form .is_valid() always returns True . My testcase: class ServerFormTest( TestCase ): def setUp( self ): self.server = Server.objects.create( host = "127.0.0.1", name = "localhost" ) def test_unique_name(self): form = ServerForm({ 'name': 'localhost', 'host': '127.0.0.1' }) self.assertFalse( form.is

问题 Howdy - I've written a very simple app to accept job applications including a resume upload. Running the bundled server for development locally, I can successfully upload files via the web form on the front end and the admin interface. Running it on the remote server (Apache with mod_python) I can successfully upload files via the admin interface but attempts over the web front end yield no uploaded file. I've added FILE_UPLOAD_PERMISSIONS = 0644 to settings, checked the two settings files,