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Rails: where does the infamous “current_user” come from?
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It is defined by several gems, e.g. Devise
You'll need to store the user_id somewhere, usually in the session after logging in. It also assumes your app has and needs users, authentication, etc.
Typically, it's something like:
class App...
MongoDB - Update objects in a document's array (nested updating)
...e :) But for Question#1, the problem is you should search for the document by "user_id", and not by "items.item_name". In this case I can not use the Positional Operator, as I haven't specified the array in the search query. Also I want both parts to be done in one shot. (if possible)
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Disable soft keyboard on NumberPicker
...e i got to the following solution:
// Hide soft keyboard on NumberPickers by overwriting the OnFocusChangeListener
OnFocusChangeListener fcl = new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
// Do nothing to suppress keyboard
}
};
((EditText) num...
MySQL - Using COUNT(*) in the WHERE clause
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try this;
select gid
from `gd`
group by gid
having count(*) > 10
order by lastupdated desc
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Get itunes link for app before submitting
...itunes.apple.com/app/id111111111
You can find the value of your Appple ID by login into your App Store Connect and navigating to 'My Apps' under the 'App Information' -> 'General Information' -> 'Apple ID'
This url format works always and it is particularly helpful if you need the link befo...
How to save an activity state using save instance state?
...ave your UI state somewhere else. Or preventing your app from being killed by overriding BACK button behavior. I don't understand why they even implemented it like this in the first place. Totally unintuitive. And you can't have that Bundle the system give you to save things into except in this very...
How to efficiently compare two unordered lists (not sets) in Python?
...ts, big-O analysis is usually irrelevant because the timings are dominated by constant factors. For the longer lists, I suspect something is wrong with your benchmarking. For 100 ints with 5 repeats each, I get: 127 usec for sorted and 42 for Counter (about 3x faster). At 1,000 ints with 5 repeat...
Difference between val() and text()
...ame" />
<input type="checkbox" name="vehicle" value="Bike" id="chk_byk" class="ss">bike<br>
<script type="text/javascript">
$(document).ready(function () {
$("#btn_submit").click(function () {
alert($("#chk_byk").val());
});
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Rails server says port already used, how to kill that process?
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You can also find the PID by navigating through your rails directory to the following file tmp/pids/server.pid
– tandy
Feb 15 '14 at 19:29
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Design Pattern for Undo Engine
...of all the commands that have been executed and you can roll them back one by one.
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