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How to delete a record in Django models?
...t(id = 20)
wishlist.delete()
If you want to delete all items in Wishlist for example
Wishlist.objects.all().delete()
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ROW_NUMBER() in MySQL
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I want the row with the single highest col3 for each (col1, col2) pair.
That's a groupwise maximum, one of the most commonly-asked SQL questions (since it seems like it should be easy, but actually it kind of isn't).
I often plump for a null-self-join:
SELECT t0.co...
How can I submit a form using JavaScript?
I have a form with id theForm which has the following div with a submit button inside:
10 Answers
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Using CSS to affect div style inside iframe
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Not exactly a "CSS only" solution, but good enough for me. +1
– Nicu Surdu
May 22 '13 at 14:20
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Database, Table and Column Naming Conventions? [closed]
... uses a very clear and consistent naming convention that uses schema names for the organization of database objects.
Singular names for tables
Singular names for columns
Schema name for tables prefix (E.g.: SchemeName.TableName)
Pascal casing (a.k.a. upper camel case)
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Leaflet - How to find existing markers, and delete markers?
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You can also push markers into an array. See code example, this works for me:
/*create array:*/
var marker = new Array();
/*Some Coordinates (here simulating somehow json string)*/
var items = [{"lat":"51.000","lon":"13.000"},{"lat":"52.000","lon":"13.010"},{"lat":"52.000","lon":"13.020"}];
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Specifying column name in a “references” migration
...ave to modify it, so now you have to call
def post
belongs_to :user, :foreign_key => 'author_id'
end
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How can I get clickable hyperlinks in AlertDialog from a string resource?
...ike the currently most popular answer because it significantly changes the formatting of the message in the dialog.
Here's a solution that will linkify your dialog text without otherwise changing the text styling:
// Linkify the message
final SpannableString s = new SpannableString(msg); /...
Retrieve a Fragment from a ViewPager
... return registeredFragments.get(position);
}
}
This seems to work for me when dealing with Fragments that are available. Fragments that have not yet been instantiated, will return null when calling getRegisteredFragment. But I've been using this mostly to get the current Fragment out of the...
Which is more correct: … OR …
... <a><h1>..</h1></a> sound preferable for HTML 5 since it gives touch device users a bigger click target, right?
– Acyra
Jul 27 '16 at 13:26
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