Django: common view-UpdateView updates form class with parameters, django-updateview

Django: common view-UpdateView updates form class with parameters, django-updateview

This prompt is put at the beginning: to use a general view to update a form, the form type must be ModelForm,

That is:

class FileForm(forms.ModelForm):    ....

Don't ask why I know

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First: urls. py

# Coding = utf-8from django. conf. urls import patterns, urlfrom app_filemanager import viewsurlpatterns = patterns ('',... url (R' ^ (? P <pk> \ d +)/update/$ ', views. fileUpdateView. as_view (), name = 'update'), # pk is used as the variable name for common view values, and this pk is usually the one generated by the model, therefore, use d + for regular expression matching)

Then: forms. py

# Coding = utf8from django import formsfrom. models import File, Project, Tagfrom django. contrib. auth. models import User, Groupclass FileForm (forms. modelForm): def _ init _ (self, user, * args, ** kwargs): super (FileForm, self ). _ init _ (* args, ** kwargs) self. fields ['tag'] = forms. modelChoiceField (queryset = Tag. objects. filter (owner = user), required = True, label = "classification", help_text = "cannot be blank, use for personal document classification", error_messages = {'required ': "The following are required items"}, empty_label = "Please select at least one", widget = forms. select (attrs = {'class': 'form-control', 'style': 'width: 100% ',}),) project = forms. modelChoiceField (queryset = Project. publicProjects. order_by ('-add_date'), required = False, label = "project", help_text = "can be empty. To prevent confusion, a document can only belong to one project ", error_messages = {'required': "The following are required."}, widget = forms. select (attrs = {'class': 'form-control', 'style': 'width: 100% ',}),) tag = forms. modelChoiceField (queryset = Tag. objects. none (),) group = forms. modelMultipleChoiceField (queryset = Group. objects. order_by ('-id'), required = True, label = "which groups are visible", help_text = "multiple options available", error_messages = {'required ': "select at least one of the following"}, widget = forms. selectMultiple (attrs = {'class': 'form-control', 'style': 'width: 100% '}),) desc = forms. charField (required = False, label = "Description", widget = forms. textarea (attrs = {'placeholder ': U' you can find the document', 'rows ': 2, 'style': 'width: 100%', 'class ': 'form-control',}),) file = forms. fileField (required = True, label = "document", help_text = "size limit: 1 GB", error_messages = {'required': "select a file "},) deleted = forms. booleanField (required = False, label = "marked as deleted when selected", help_text = "public by default, personal files are not classified by projects", widget = forms. hiddenInput (attrs = {'style': 'width: 100% ', 'class': 'form-control',}),) public = forms. booleanField (required = False, label = "public", # help_text = "selected as public, personal files are not classified by projects",) class Meta: model = File fields = ('project', 'tag', 'group', 'desc', 'file', 'public ')

For the init method in the form class, refer to my previous article. Here

In the previous blog, how does one upload request. user to form? Here, we will explain how to upload

Then: views. py

class FileUpdateView(UpdateView):    model = File    template_name_suffix = '_update_form'    success_url = '/file/'    permission_required = 'app_filemanager.can_change_file'    permission_fail_message = ('You don\'t have permission to change employee info.')    form_class = FileForm    def get_form_kwargs(self):        kwargs = super(FileUpdateView, self).get_form_kwargs()        kwargs.update({            'user':self.request.user        })        return kwargs

Last: file_update_form.html

{% extends "base.html" %}{% block content_middle %}<form action="" method="post">{% csrf_token %}    {{ form.as_p }}    <input type="submit" class="btn btn-default" value="Update" /></form>{% endblock %}

Attached:

This is simple, so it is easy to say that the form class of django will be used and applied flexibly. If you have any questions, leave a message.