大约有 7,548 项符合查询结果（耗时：0.0277秒） [XML]
differentiate null=True, blank=True in django
...as NULL in the DB.
blank determines whether the field will be required in forms. This includes the admin and your custom forms. If blank=True then the field will not be required, whereas if it's False the field cannot be blank.
The combo of the two is so frequent because typically if you're going ...
Email validation using jQuery
...o Validate Email
I really don’t like to use plugins, especially when my form only has one field that needs to be validated. I use this function and call it whenever I need to validate an email form field.
function validateEmail($email) {
var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;
...
How do I drag and drop files into an application?
...
Some sample code:
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
this.AllowDrop = true;
this.DragEnter += new DragEventHandler(Form1_DragEnter);
this.DragDrop += new DragEventHandler(Form1_DragDrop);
}
...
Django: Redirect to previous page after login
... page. When clicking on the login link the user will be taken to the login form. After a successful login the user should be taken back to the page from where he clicked the login link in the first place.
I'm guessing that I have to somehow pass the url of the current page to the view that handles t...
How to set the Default Page in ASP.NET?
...ll it could be. I think the simple thing would be like Application.Run(new Form()1) :)
– Tarik
Dec 16 '09 at 8:20
@Arr...
Create empty queryset by default in django form fields
I have this fields in form:
2 Answers
2
...
Best way to hide a window from the Alt-Tab program switcher?
...It's easy to hide a window from the taskbar via a property in both Windows Forms and WPF, but as far as I can tell, this doesn't guarantee (or necessarily even affect) it being hidden from the Alt + ↹Tab dialog. I've seen invisible windows show up in Alt + ↹Tab , and I'm just wondering what...
Using curl to upload POST data with files
...y send data parameters in HTTP POST but to also upload files with specific form name. How should I go about doing that ?
9 ...
Is a url query parameter valid if it has no value?
...eptable to your server-side framework/code
The URI RFC doesn't mandate a format for the query string. Although it is recognized that the query string will often carry name-value pairs, it is not required to (e.g. it will often contain another URI).
3.4. Query
The query component contain...
Separation of business logic and data access in django
...an find the business logic and entities as perceived by your end user, the former is where you actually store your data.
Furthermore, I've interpreted the 3rd part of your question as: how to notice failure to keep these models separate.
These are two very different concepts and it's always hard to ...