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Django Admin - Disable the 'Add' action for a specific model
I have a django site with lots of models and forms. I have many custom forms and formsets and inlineformsets and custom validation and custom querysets. Hence the add model action depends on forms that need other things, and the 'add model' in the django admin throughs a 500 from a custom queryset.
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Convert DateTime to String PHP
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You can use the format method of the DateTime class:
$date = new DateTime('2000-01-01');
$result = $date->format('Y-m-d H:i:s');
If format fails for some reason, it will return FALSE. In some applications, it might make sense to handle...
The character encoding of the HTML document was not declared
When I click on my form's submit button the following error message appears:
6 Answers
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Remove characters from NSString?
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Please can you format code snippets in a monospaced font for legibility. At present distinguishing the first string is a little tricky
– Mike Abdullah
May 30 '09 at 9:30
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URLEncoder not able to translate space character
...LEncoder implements the HTML Specifications for how to encode URLs in HTML forms.
From the javadocs:
This class contains static methods for
converting a String to the
application/x-www-form-urlencoded MIME
format.
and from the HTML Specification:
application/x-www-form-urlencoded
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What is the most efficient string concatenation method in python?
...etty much equivalent to the ''.join() case with unnecessary calls to str.__format__ which without arguments would just return self unchanged. These inefficiencies were addressed before 3.6 final.
The speed can be contrasted with the fastest method for Python 2, which is + concatenation on my comput...
How to manually trigger validation with jQuery validate?
... Just associate a click event to your button and try the following:
$("#myform").validate().element("#i1");
Examples here:
https://jqueryvalidation.org/Validator.element
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Getting full URL of action in ASP.NET MVC [duplicate]
...script which is beneficial in many situations.
UPDATE: The way to get url formed outside of the page itself is well described in answers above.
Or you could do a oneliner like following:
new UrlHelper(actionExecutingContext.RequestContext).Action(
"SessionTimeout", "Home",
new {area = s...
Mimicking sets in JavaScript?
... keys in the Set
// returns the original key (not the string converted form)
keys: function() {
var results = [];
this.each(function(data) {
results.push(data);
});
return results;
},
// clears the Set
clear: function() {
this.d...
Why java.util.Optional is not Serializable, how to serialize the object with such fields
...ion related problems can be solved by decoupling the persistent serialized form from the actual runtime implementation you operate on.
/** The class you work with in your runtime */
public class My implements Serializable {
private static final long serialVersionUID = 1L;
Optional<Integ...