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How to play a sound in C#, .NET
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@Praveen's answer just gave another informative fact. Thanks to Dexter for asking that "@" symbol.
– Allen Linatoc
Apr 27 '15 at 7:14
2
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Difference between a Postback and a Callback
...is posted with ASP.Net is because ASP.Net encloses the whole page in a <form> with a post method, and so when a submit button is clicked in the page, the form is sent to the server with all of the fields that are in the form... basically the whole page itself.
If you are using FireBug (for Fi...
How to use the “required” attribute with a “radio” input field
...to be selected at a time and applies required to the whole group.
<form>
Select Gender:<br>
<label>
<input type="radio" name="gender" value="male" required>
Male
</label><br>
<label>
<input type="radio" name="gender" va...
How to compare Unicode characters that “look alike”?
...ou can normalize both of the Unicode characters to a certain normalization form before comparing them, and they should be able to match. Of course, which normalization form you need to use depends on the characters themselves; just because they look alike doesn't necessarily mean they represent the ...
JavaScript file upload size validation
...nt.body.appendChild(elm);
}
</script>
</head>
<body>
<form action='#' onsubmit="return false;">
<input type='file' id='fileinput'>
<input type='button' id='btnLoad' value='Load' onclick='showFileSize();'>
</form>
</body>
</html>
And here it is ...
Is there a way to get rid of accents and convert a whole string to regular letters?
... to handle this for you.
string = Normalizer.normalize(string, Normalizer.Form.NFD);
// or Normalizer.Form.NFKD for a more "compatable" deconstruction
This will separate all of the accent marks from the characters. Then, you just need to compare each character against being a letter and throw o...
How to use WinForms progress bar?
I want to show progress of calculations, which are performing in external library.
4 Answers
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What is the difference between -viewWillAppear: and -viewDidAppear:?
... whenever the view was loaded into memory. So for example, if my view is a form with 3 labels, I would add the labels here; the view will never exist without those forms.
2) ViewWillAppear: I use ViewWillAppear usually just to update the data on the form. So, for the example above, I would use this...
HTML5 form required attribute. Set custom validation message?
I've got the following HTML5 form: http://jsfiddle.net/nfgfP/
14 Answers
14
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Django admin: How to display a field that is marked as editable=False' in the model?
...option.
Original Answer
One way to do this would be to use a custom ModelForm in admin. This form can override the required field to make it editable. Thereby you retain editable=False everywhere else but Admin. For e.g. (tested with Django 1.2.3)
# models.py
class FooModel(models.Model):
fir...