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MySQL Cannot drop index needed in a foreign key constraint
... a SO Question on the topic).
ALTER TABLE mytable DROP FOREIGN KEY mytable_ibfk_1 ;
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Django Admin - Disable the 'Add' action for a specific model
...
It is easy, just overload has_add_permission method in your Admin class like so:
class MyAdmin(admin.ModelAdmin):
def has_add_permission(self, request, obj=None):
return False
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
...cure at a second look. This only makes sense to me if you are working with __dict__, and the keywords are going to become attributes later, something like that.
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How do I specify a single test in a file with nosetests?
I have a file called test_web.py containing a class TestWeb and many methods named like test_something().
6 Answers
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评分条使用指导 · App Inventor 2 中文网
...分) {
标签1.Text = join("你打了 ", 评分, " 分")
}
when 按钮_提交.Click() {
if 评分条1.Rating == 0 {
对话框1.ShowAlert("请先打分")
} else {
Web客户端1.PostText(join("score=", 评分条1.Rating))
}
}
显示平均分：只读勾选为真、步长设为 0.5...
AngularJS - Trigger when radio button is selected
...pe="radio" ng-model="value" value="three"/>
The javascript file:
var _value = null;
Object.defineProperty($scope, 'value', {
get: function () {
return _value;
},
set: function (value) {
_value = value;
someFunction();
}
});
see this plunker for the implementation...
Why is Scala's immutable Set not covariant in its type?
... worth losing the use of that covariant type?
– oxbow_lakes
Mar 24 '09 at 22:00
23
The type signa...
What are five things you hate about your favorite language? [closed]
... and so hideously wrong I have never used it (see http://www.php.net/create_function).
3) A try/catch system which can only catch about 80% of errors that might occur.
4) Regex support just as lame as lambda support because it has to be written inside regular strings, making one of the most hard-t...
Fastest Way to Find Distance Between Two Lat/Long Points
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The X() and Y() function should be ST_Y and ST_X nowadays.
– Andreas
Jun 11 at 14:56
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Select first row in each GROUP BY group?
... SELECT p.id,
p.customer,
p.total,
ROW_NUMBER() OVER(PARTITION BY p.customer
ORDER BY p.total DESC) AS rk
FROM PURCHASES p)
SELECT s.*
FROM summary s
WHERE s.rk = 1
Supported by any database:
But you need to add logic...