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How to prevent buttons from submitting forms
..., making it easier to debug... it also allows you to implement a fall-back by changing the type on the buttons back to submit and handling the event server-side - this is known as unobtrusive JavaScript.
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How to select an element by classname using jqLite?
... heavy use of find('#id') and find ('.classname'), which are not supported by jqLite, only 'tag names' (as per documentation)
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Is there a way to loop through a table variable in TSQL without using a cursor?
...able. I don't believe the normal downsides of cursors applies here. If row-by-row processing is truly required (and as you point out he should be certain about that first) then using a cursor is a much better solution than the ones you describe here.
– peterh
J...
Migration: Cannot add foreign key constraint
...table. Migrations get executed in the order they were created as indicated by the file name generated after running migrate:make. E.g. 2014_05_10_165709_create_student_table.php.
The solution was to rename the file with the foreign key to an earlier time than the file with the primary key as recomm...
Insert into a MySQL table or update if exists
... manual that updates in ON DUPLICATE KEY UPDATE increase the affected rows by 2. It reports 0 if nothing is actually updated (same as the regular UPDATE).
– Vatev
Mar 31 '14 at 11:53
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Difference between and
...red in the application context (no matter if they were defined with XML or by package scanning).
<context:component-scan> can also do what <context:annotation-config> does but <context:component-scan> also scans packages to find and register beans within the application context.
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Convert Django Model object to dict with all of the fields intact
..._key_id': 2,
'id': 1,
'normal_value': 1,
'readonly_value': 2}
This is by far the simplest, but is missing many_to_many, foreign_key is misnamed, and it has two unwanted extra things in it.
2. model_to_dict
from django.forms.models import model_to_dict
model_to_dict(instance)
which returns...
How to define object in array in Mongoose schema correctly with 2d geo index
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You can declare trk by the following ways : -
either
trk : [{
lat : String,
lng : String
}]
or
trk : { type : Array , "default" : [] }
In the second case during insertion make the object and push it into the array like
db.u...
Cast an instance of a class to a @protocol in Objective-C
...ing to cast to the specific object. So, I would recommend using the answer by @andy anywhere you are casting to a protocol instead of the above -- id<MyProtocol> p = (id<MyProtocol>)self.myViewController; This answer and @andys are both correct, but his is more correct.
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Is it possible to GROUP BY multiple columns using MySQL?
Is it possible to GROUP BY more than one column in a MySQL SELECT query? For example:
7 Answers
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