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Difference between one-to-many and many-to-one relationship
...
Yes, it a vice versa. It depends on which side of the relationship the entity is present on.
For example, if one department can employ for several employees then, department to employee is a one to many relationship (1 department employs many employees), while employ...
ruby on rails f.select options with custom attributes
...e in your question. Using html5 data-attributes:
<%= f.select :country_id, options_for_select(
@countries.map{ |c| [c.name, c.id, {'data-currency_code'=>c.currency_code}] }) %>
Adding an initial selection:
<%= f.select :country_id, options_for_select(
@countries.map{ |c| [c.n...
jQuery: more than one handler for same event
... multiple handlers on one element, therefore a later handler does not override an older handler.
The handlers will execute in the order in which they were bound.
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Immutable vs Mutable types
...'m confused on what an immutable type is. I know the float object is considered to be immutable, with this type of example from my book:
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Run a Docker image as a container
... tag/name or not.
$ docker images
REPOSITORY TAG ID CREATED SIZE
ubuntu 12.04 8dbd9e392a96 4 months ago 131.5 MB (virtual 131.5 MB)
With a name (let's use Ubuntu):
$ docker run -i -t ubuntu:12.04 /bin/...
jQuery ID starts with
I am trying to get all elements with an id starting with some value. Below is my jQuery code. I am trying to use a JavaScript variable when searching for items. But it does not work. What am I missing below? So the id 'value' am searching is the value of the clicked element
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Pythonic way to create a long multi-line string
...be a tuple.
query = ('SELECT action.descr as "action", '
'role.id as role_id,'
'role.descr as role'
' FROM '
'public.role_action_def,'
'public.role,'
'public.record_def, '
'public.action'
' WHERE role.id = role_action_def.rol...
How to set space between listView Items in Android
...XML for anyone maybe floating in here later via google:
<ListView android:id="@+id/MyListView"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:divider="@android:color/transparent"
android:dividerHeight="10.0sp"/>
For some reason, values such as "10",...
CSS How to set div height 100% minus nPx
...efox / IE7 / Safari / Chrome / Opera.
* {margin:0px;padding:0px;overflow:hidden}
div {position:absolute}
div#header {top:0px;left:0px;right:0px;height:60px}
div#wrapper {top:60px;left:0px;right:0px;bottom:0px;}
div#left {top:0px;bottom:0px;left:0px;width:50%;overflow-y:auto}
div#right {top:0px;bott...
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...