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Questions tagged [children]

Children is the set of all nodes within a hierarchical data structure which have a node above them.

1638 questions
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Rails, Deleting Children without Deleting Parent using :has_many

I have class MyContainer < ActiveRecord::Base :has_many MyObjects, :dependent => :destroy end I want to delete all the MyObjects in the container without having to delete the MyContainer. My model does have :dependent => :destroy, however I don't…
Dex
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Get all extended Classes in PHP

Say I got a class like:
Andre Zimpel
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Adding an Image inside a Button programmatically

In WPF: How can I mimic this in C#? I can't find any method in the Button class that adds children.
Wilson
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JQuery: How to find out how many children an element has?

How can I use jQuery to find out how many children an element has? Say I have the following structure:
Antonio Moore
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jQuery: create a javascript ARRAY from an Element's CHILDREN

I am trying to create a JavaScript ARRAY, and get the name of an element's children. (I do not need span elements, only input, select and textarea) HTML:
ID: Date: …
Omar
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How do you use refs to access the values of mapped children in React?

I have an app that pulls data from a GraphQL database and then .maps it into custom form components (quantity number textboxes). Right now, the components themselves are holding state of their individual quantities, but I need to be able to access…
ep84
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React - how to determine if a specific child component exists?

If I have this structure: const MyComponent = (props) => { return ( {props.children} ); } and I use it like this: How can I check to see if…
JoeTidee
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mongodb sorting children of an array in a document

My data looks like this: { "name":"dan", "somestring":"asdf", "friends":[ { "name": "carl", "height":180, ... }, { "name": "john", …
McDermott
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How to get as e.target the exact element at which onClick is specified?

I have a React Component and give it onClick event handler: function Item(props) { return
  • {props.children}
    • } Then I use the Component like this: This…
    olegzhermal
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    Swift 3 (SpriteKit): Changing the alpha value of the parent which affects all children

    Say for instance I create SKShapeNode and create children for it (an example is a cross and its two intersecting lines). The cross is the parent, and the intersecting lines are the children. How could you change the alpha value of all the parent's…
    J.Treutlein
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    Windows Forms, getting a property from parent form

    I'm having a bit of a problem. I have a datatable in the parent form. I open a dialogbox form that gets the datatable property and creates a checkboxlist. This will be used to export those columns. But when I run the application the parentform…
    Joe Chin
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    What is a good programming language to start my Grade 1 son learning?

    Possible Duplicates: How to get kids into programming Suggestions on starting a child programming. Is there a really simple programming language that I can use to teach my 6 year old son concepts of programming, syntax and logic?
    Brent
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    NHibernate save / update event listeners: listening for child object saves

    I have an Area object which has many SubArea children: public class Area { ... public virtual IList SubAreas { get; set; } } he children are mapped as a uni-directional non-inverse relationship: public class AreaMapping :…
    James Allen
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    Getting child element of a child element of a parent with ID

    I need to get to the child of the child of the child of an element with an id = "part1" with javascript. So essentially, I want to get to the 3rd row of the 3rd table of the span element but I can't seem to get it to work :(
    Alpotato
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    Silverlight: Find all controls of type in layout

    I'm looking for a reliable method to build a list of controls of contained in a specific derived control - this includes those that are direct children, and those which are children of children and so on. The most obvious way was to…
    David
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