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How to convert ActiveRecord results into an array of hashes
...ash and you can convert any ActiveRecord results to an Array with to_a, so for your example :
tasks_records = TaskStoreStatus.all
tasks_records.to_a.map(&:serializable_hash)
And if you want an ugly solution for Rails prior to v2.3
JSON.parse(tasks_records.to_json) # please don't do it
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How can I create a copy of an object in Python?
...y independent copy of an object you can use the copy.deepcopy() function.
For more details about shallow and deep copying please refer to the other answers to this question and the nice explanation in this answer to a related question.
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How to send a JSON object using html form data
So I've got this HTML form:
5 Answers
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Find first element by predicate
...ce, you should not use get();, but orElse() / orElseGet() / orElseThrow() (for a more meaningful error instead of a NSEE) as you might not know if the operations applied to the stream pipeline will result in an element.
– Alexis C.
Feb 24 '16 at 17:22
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What is android:weightSum in android, and how does it work?
...t="1"
android:layout_width="0dp"/>
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weightSum is useful for having the layout rendered correctly for any device, which will not happen if you set width and height directly.
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Ordering by specific field value first
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There's also the MySQL FIELD function.
If you want complete sorting for all possible values:
SELECT id, name, priority
FROM mytable
ORDER BY FIELD(name, "core", "board", "other")
If you only care that "core" is first and the other values don't matter:
SELECT id, name, priority
FROM mytabl...
$.focus() not working
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Actually the example you gave for focusing on this site works just fine, as long as you're not focused in the console. The reason that's not working is simply because it's not stealing focus from the dev console. If you run the following code in your cons...
MySQL: Insert record if not exists in table
...I cannot depend on the primary key. But this is exactly what I was looking for.
– Rupert
Jul 2 '10 at 10:41
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Android ListView Divider
...vices, that translates to 2-3 pixels, and it usually looks ugly or sloppy
For dividers, 1px is the correct height if you want a 1 pixel divider and is one of the exceptions for the "everything should be dip" rule. It'll be 1 pixel on all screens. Plus, 1px usually looks better on hdpi and above scr...
Warn user before leaving web page with unsaved changes
I have some pages with forms in my application.
18 Answers
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