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Rails 4 - Strong Parameters - Nested Objects
... the other hand if you want nested of multiple objects then you wrap it inside a hash… like this
params.require(:foo).permit(:bar, {:baz => [:x, :y]})
Rails actually have pretty good documentation on this: http://api.rubyonrails.org/classes/ActionController/Parameters.html#method-i-permit
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How to select from subquery using Laravel Query Builder?
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@Kannan nope. it's a candidate for a PR I guess, but in the end that's not very common use case. Probably this is the reason for not having it there up to this day..
– Jarek Tkaczyk
Feb 28 '16 at 12:28
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setBackground vs setBackgroundDrawable (Android)
...e completeness of it... You'd do something like following:
int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
setBackgroundDrawable();
} else {
setBackground();
}
For this to work you need to set buildTarget api 16 and min build to 7 or so...
Javascript : natural sort of alphanumerical strings
...s, it is better to create an Intl.Collator object and use the function provided by its compare property. Docs link
var collator = new Intl.Collator(undefined, {numeric: true, sensitivity: 'base'});
var myArray = ['1_Document', '11_Document', '2_Document'];
console.log(myArray.sort(collator.c...
scp (secure copy) to ec2 instance without password
...n the wrong order. This works:
scp -i mykey.pem somefile.txt root@my.ec2.id.amazonaws.com:/
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How to change theme for AlertDialog
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In Dialog.java (Android src) a ContextThemeWrapper is used. So you could copy the idea and do something like:
AlertDialog.Builder builder = new AlertDialog.Builder(new ContextThemeWrapper(this, R.style.AlertDialogCustom));
And then style it lik...
Pandas percentage of total with groupby
...te the percentage in a simpler way -- just groupby the state_office and divide the sales column by its sum. Copying the beginning of Paul H's answer:
# From Paul H
import numpy as np
import pandas as pd
np.random.seed(0)
df = pd.DataFrame({'state': ['CA', 'WA', 'CO', 'AZ'] * 3,
'...
How to run functions in parallel?
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I used your code but the functions still didn't start at the same time.
– lmcadory
Aug 26 '11 at 16:26
4
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Return rows in random order [duplicate]
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SELECT * FROM table
ORDER BY NEWID()
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'printf' vs. 'cout' in C++
...cription is placeholder, the code would look like this. Both examples work identically (well, sort of, std::endl actually flushes the buffer).
printf("Error %d: %s.\n", id, errors[id]);
std::cout << "Error " << id << ": " << errors[id] << "." << std::endl;
Whil...