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Show children of a parent class Rails 4.0

由 a 夏天 提交于 2019-12-08 07:48:54
问题 I have a model for School and Student. Their relationship is School has_many Students. I am trying to render a view where if I am on the School index page and I click "Show", it will open up a new page and display a list of students that belong to that school. Ex: School - Student1 - Student2 - Student3 回答1: You can do as following: # students controller def index @students = Student.scoped @students = @students.where(school_id: params[:school_id]) if params[:school_id].present? end # view of

Accessing container fields

由 六眼飞鱼酱① 提交于 2019-12-08 07:33:12
问题 I've got a very silly question to ask. I'm using NetBeans to built a small app and I'm having the following problem; My main class is called mainApp and is extending a JFrame which in turn contains a JPanel called drawingBoard which I also extend for various (and off-topic) reasons.. The core problem is that at some point I need to access one of the fields of the mainApp but due to the way NetBeans instantiates my main class..(as anonymous class) I can't get a reference to the container(that

WPF Frame accessing parent page controls

由 丶灬走出姿态 提交于 2019-12-08 05:18:50
问题 I have a WPF page that contains a Listbox and a frame. The frame has various pages loaded into it determined by the selection within the Listbox. Each page within the frame has a variety of different input boxes and has a Save Cancel button. When the Save button is clicked I need the content to be saved to the database and the Listbox in the parent page to be refreshed to reflect the new data. Saving the data is easy but how do I initiate a refresh on the contents of the Listbox in the parent

SIlverlight Generic Template Animat Parent Control Property

由 爱⌒轻易说出口 提交于 2019-12-08 04:30:24
问题 I have a custom control with its template defined in a generic.xaml. It is a two row grid in which the second row can be "retracted into" the first row. However, I found that when I simply animated the height of the second row or the grid to acheive the desired results, the parent of the template (i.e the instance of my custom control) still had the same height. This lead to list boxes with lots of white space in them between each element. I need to just have the animation change the height

jQuery parent(); function removeClass(); not working (bug)

由 可紊 提交于 2019-12-08 04:20:09
问题 I have a portfolio where I list portfolio items. I have classes so when you click the item, it has an effect. For some reason, when I click the minus button, it doesn't remove the class 'on'. Here is the jQuery: $('.portfolio-item').click(function() { $(this).addClass('on'); }); $('.minus').click(function() { $(this).closest('.portfolio-item').removeClass('on'); }); and here is the element set up: <div class="portfolio-item" style="margin-top: 5px; "> <div class="overlay"> <h1>LOW POLY

Pass More that one database record from child window to parent window dynamically

由 爱⌒轻易说出口 提交于 2019-12-08 03:48:07
问题 How to add multiple record from child window to the parent window.? Means when we select multiple records from child window pass that records to parent window and also update parent window without page refresh.... http://demo.vtiger.com/index.php?module=Invoice&action=EditView&return_action=DetailView&parenttab=Sales use that link and add invoice from there...then goto add products one window will popup i want same functionality but dont have idea where to start 回答1: First of all create

Jquery Auto expand Parent div when child div height is changed

由 ▼魔方 西西 提交于 2019-12-08 00:23:34
问题 What is the easiest way to make the parent #container div automatically adjust height when the inner #child contenteditable div exceeds the height of the parent div. Here's the example. http://jsfiddle.net/ULUJX/ Try to type inside the #child div until height exceeds the parent div. 回答1: I'd track keyup events and watch the height of #child , for example: var $child = $('#child'); var $container = $('#container'); var container_height = $container.height(); $container.resizable(); $child

XSLT 1.0: how to go for the “parent” axis

由 时光总嘲笑我的痴心妄想 提交于 2019-12-07 16:31:25
问题 I have a question concerning the performance of an XSLT calling the "parent" axis in an XPATH. I can call the parent axis using "::*" or I call it using "::" and the name of the element parent::*/MVKE/item/VMSTA='Z2' or parent::item/MVKE/item/VMSTA='Z2' Does it matter performance wise if I use the "*" or if I use the name of the node element? Both work but I was wondering what the difference is. Can please someone explain that to me? Thank you very much for your help and best regards, Peter

How to get the parent element value using jquery?

由 纵饮孤独 提交于 2019-12-07 14:32:50
问题 I have a table with a couple of rows with two cells in each row and each cell has couple of info like office name, address and phone number etc. Using jquery for each, the address is being pulled out from each cell and fed into google map geocoder object to get the point and plot it in the map. Now at each hit of an Address value, I would also like to grab the unique value of phone and office name from the current cell from which jquery is getting address value..I need those values so i can

jQuery Lightbox Evolution: Load lightbox outside a iframe

由 萝らか妹 提交于 2019-12-07 13:45:26
I'm using a jQuery Lightbox Evolution plugin, and I have photo links inside a iframe. I wanna that Lightbox open outside a iframe, in a parent window. In the FAQ, i find that I can put some code on parent: <script type="text/javascript"> function frameload(iframe) { var doc = iframe.contentWindow || iframe.contentDocument; if (doc.document) { doc = doc.document; }; $('.lightbox', doc.body).lightbox(); }; </script> But dont work, because my code is generated inline, dynamic with php. So I dont 'initialize' the plugin in head tag, just call that in the code. There's my piece of code that
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