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form_for but to post to a different action
...done it like that
<%= form_for :user, url: {action: "update", params: {id: @user.id}} do |f| %>
Note the optional parameter id set to user instance id attribute.
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jQuery checkbox checked state changed event
I want an event to fire client side when a checkbox is checked / unchecked:
10 Answers
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Convert javascript array to string
...", "bbb": "222", "ccc": "333" };
var blkstr = [];
$.each(value, function(idx2,val2) {
var str = idx2 + ":" + val2;
blkstr.push(str);
});
console.log(blkstr.join(", "));
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>...
Fling gesture detection on grid layout
I want to get fling gesture detection working in my Android application.
18 Answers
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How can I use break or continue within for loop in Twig template?
...if not break %}
<h2>{{ post.heading }}</h2>
{% if post.id == 10 %}
{% set break = true %}
{% endif %}
{% endfor %}
An uglier, but working example for continue:
{% set continue = false %}
{% for post in posts %}
{% if post.id == 10 %}
{% set continue = t...
How to parse/format dates with LocalDateTime? (Java 8)
...e LocalDateTime class instead of on the instance? At least, that's what I did: I confused DateTime with dateTime in the example above.
– glaed
Aug 26 '16 at 15:10
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Using Selenium Web Driver to retrieve value of a HTML input
...he displayed text is not wrapped by the <input> tag, instead it's inside the value attribute.
Note: Case matters. If you specify "Value", you'll get a 'null' value back. This is true for C# at least.
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In Python, what is the difference between “.append()” and “+= []”?
...l add one item to the list, while += will copy all elements of right-hand-side list into the left-hand-side list.
Update: perf analysis
Comparing bytecodes we can assume that append version wastes cycles in LOAD_ATTR + CALL_FUNCTION, and += version -- in BUILD_LIST. Apparently BUILD_LIST outweighs...
How to use HTML to print header and footer on every printed page of a document?
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This did not work for me, I'm using Chrome 15.0. All it does is print the element where it would be on the screen, e.g. in the middle of the page, if that's where I scrolled to. It certainly doesn't print on every page.
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Accessing members of items in a JSONArray with Java
... recs.length(); ++i) {
JSONObject rec = recs.getJSONObject(i);
int id = rec.getInt("id");
String loc = rec.getString("loc");
// ...
}
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