bootstrap - dynamically changing jumbotron background image

javascript,jquery,html,css,bootstrap

You have some syntax errors otherwise everything is good!! keep url inside quotes as below: $('.jumbotron').css('background-image','url(/path/to/new/image)'); ...

Can Rails deal with DB uniqueness without index?

mysql,ruby-on-rails,rdbms

Because there is no need for other ways. Under the hood it's all the same: when you define a UNIQUE constraint, a UNIQUE index is created on that table to enforce it. Question from DBA.SE: When should I use a unique constraint instead of a unique index? So for a...

Rails basic auth not working properly

ruby-on-rails,ruby,authentication

@user.keys.each do |key| username == key.api_id && password == key.api_key end This piece of code returns a value of .each, which is the collection it's called on (@user.keys in this case). As it is a truthy value, the check will pass always, regardless of what are the results of evaluating...

CSS - Linear Gradient Background Color no-repeat is not working for if it has multiple tds

html,css,css3

table{border-collapse:collapse;width:100%} table tr td{padding:5px;border:1px solid #000; background:#FFF } table tr:hover td{padding:5px;border:1px solid #000; background:transparent } table{ background:...

What is Rack::Utils.multipart_part_limit within Rails and what function does it perform?

ruby-on-rails,ruby,rack,multipart

Telling it short, this value limits the amount of simultaneously opened files for multipart requests. To understand better what is multipart, you can see this question. The reason for this limitation is an ability to better adjust your app for your server. If you have too many files opened at...

Website showing differently in windows xp and mobile

html,css

The background colour changes when the browser width is less than 1200px wide. You have specified the background-color for the selector .td-grid-wrap within a media query: What you need to do is move the background-color property to the non-media-queried selector .td-grid-wrap or perhaps .td-page-wrap. ...

change icon on collapse in Bootstrap 2.3 not in bootstrap 3

javascript,jquery,css,html5,twitter-bootstrap

Updated. Yes - the first pure CSS solution was not satisfactory. If you dare to add some javascript, you can do this : $('.accordion-group').on('show', function() { $(this).find('.accordion-toggle').removeClass('arrow-down').addClass('arrow-up'); }); $('.accordion-group').on('hide', function() { $(this).find('.accordion-toggle').removeClass('arrow-up').addClass('arrow-down'); }); It is using the bootstrap collapse hide / show events directly on the collapse sections. Still without...

Dynamically resize side-by-side images with different dimensions to the same height

javascript,html,css,image

If it's responsive, use percentage heights and widths: html { height: 100%; width: 100%; } body { height: 100%; width: 100%; margin: 0; padding: 0; } div.container { width: 100%; height: 100%; white-space: nowrap; } div.container img { max-height: 100%; } <div class="container"> <img src="http://i.imgur.com/g0XwGQp.jpg" /> <img src="http://i.imgur.com/sFNj4bs.jpg" /> </div>...

Google map infowindow position on custom marker

javascript,css,google-maps,google-maps-api-3

Set the pixelOffset of the InfoWindow appropriately: From the documentation on InfoWindows pixelOffset | Type:Size | The offset, in pixels, of the tip of the info window from the point on the map at whose geographical coordinates the info window is anchored. If an InfoWindow is opened with an anchor,...

Centering navbar pills vertically within the navbar using flexbox

html,css,twitter-bootstrap,flexbox

Set display: flex for the <ul class="nav">, not for items. Also use align-items: center for vertical aligment: .nav { height: 70px; display: flex; justify-content: center; align-items: center; } <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet"/> <div class="container"> <nav class="navbar navbar-default navbar-fixed-top"> <ul id="nav_pills" class="nav nav-pills" role="tablist"> <li role="presentation"> <a href="/">About</a> </li> <li...

Active Record association links, but can't assign values

ruby-on-rails

Your column should be permission_id, not permissions_id. That is why AR doesn't find the related model.

Make instance variable accessible through hash in Ruby

ruby-on-rails,ruby,ruby-on-rails-4,activerecord

It's not "through Hash", it's "array access" operator. To implement it, you need to define methods: def [](*keys) # Define here end def []=(*keys, value) # Define here end Of course, if you won't be using multiple keys to access an element, you're fine with using just key instead of...

change css dynamically by selecting dropdown list item

jquery,html,css,drop-down-menu

I have created a working example for you. You can find the jsfiddle in here This piece of code uses JQuery. (Remember, for these type of tasks, JQuery is your friend =] ). HTML <select id="dropDownMenu"> <option value="option1" selected="selected">yes</option> <option value="option2">no</option> </select> <br> <img id="picture" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/House_Sparrow_mar08.jpg/220px-House_Sparrow_mar08.jpg"> Javascript function changeStyle(){...

CSS flexbox wraps content in FireFox (not Chrome)

css,google-chrome,firefox,flexbox,pseudo-element

Weird. button elements have some special behavior which seems to conflict with flexbox. Specifically, what happens is that the flex items are blockified, according to the spec: The display value of a flex item is blockified: if the specified display of an in-flow child of an element generating a flex...

How do I specify a css margin-top for foundation row div?

css,zurb-foundation

Use: div.row { margin-top: 12px; } or .row { margin-top: 12px !important; } ...

Div with the form of a pencil [duplicate]

html,css,css-shapes

.pencil{ width: 200px; height: 40px; border: 1px solid #000; position: relative; } .pencil:before{ content: ''; display: block; margin: 10px 0; width: 100%; height: 10px; border: 6px solid #000; border-width: 6px 0; } .pencil:after{ content: ''; display: block; height: 10px; border: 1px solid #000; border-width: 1px 1px 0 0; width:...

styles css in embeded souncloud player

css,iframe,styles,embed,soundcloud

CSS you are writing on your CSS file wont effect content of iFrame. Solutions: Do you really need an iFrame? Cant it be done using modal window or something like that? Add CSS you want to add using JS/JQuery $('iframe').load( function() { $('iframe').contents().find("head") .append($("<style type='text/css'> .my-class{display:none;} </style>")); }); ...

Text-decoration/CSS causing text to move

html,css,wordpress

This is normal behaviour: Bold text is wider, thus repositioning the centered text around it. You could go for a fixed width on all links to prevent this: .main-navigation a { text-decoration: none; min-width: 6em; display: inline-block; } ...

Adding horizontal space between 2 buttons using javascript

javascript,jquery,html,css

Use CSS instead of Javascript. Anyway, you're adding a class to all buttons. Use following code: .submitButton { margin: 0 10px; } ...

Default scrollbar position

javascript,jquery,html,css,scroll

Here you go: http://jsfiddle.net/vtep7Lf1/ $("document").ready(function() { $("#ccwindow").animate({ scrollTop: $("#ccwindow").height() }, "slow"); return false; }); ...

Ruby on Rails - Help Adding Badges to Application

ruby-on-rails,ruby,rest,activerecord,one-to-many

Take a look at merit gem. Even if you want to develop your own badge system from scratch this gem contains plenty of nice solutions you can use. https://github.com/merit-gem/merit

How To Check Value Of String

javascript,css,string,numeric

document.GetElementById("tombolco").style = "display:block"; That's not the right way. This is document.getElementById("tombolco").style.display = 'block'; Also note that it is getElementById, not with a capital G. Same with 'none',Rest of your code is fine. Fiddle...

Select n elements from hover event

javascript,html,css

Use the immediate sibling selector (+) .item:hover + .item, .item:hover + .item + .item { background-color: green; } Example: http://codepen.io/anon/pen/jPGoYw...

Ruby: How to copy the multidimensional array in new array?

ruby-on-rails,arrays,ruby,multidimensional-array

dup does not create a deep copy, it copies only the outermost object. From that docs: Produces a shallow copy of obj—the instance variables of obj are copied, but not the objects they reference. dup copies the tainted state of obj. If you are not sure how deep your object...

On rendering from controller, current_page method does not seem to work

ruby-on-rails,ruby,ruby-on-rails-4,model-view-controller

You can use content_for and yields to create a default in your layout which views can override. # layouts/application.html.erb: <% if content_for?(:banner) %> <%= yield(:banner) %> <% else %> <div id="banner"> <h1>This is the default...</h1> </div> <% end %> /users/signup.html.erb: <%- content_for :banner, flush: true do -%> <!-- move along,...

Is it possible to have two callbacks in around_destroy in rails?

ruby-on-rails,activerecord,callback

It'll work without any issue, as Active Record wraps-up these callback methods in a single transaction. Since the object is destroyed in first yield, it seems the later is not feasible (assuming everything is running in one thread). How Rails handles this? No, object isn't destroyed in first yield. Object...

Button not center align in Safari

html,css,safari,center-align

if you don't set a width for btn: parent - text-align: center use for button - display-inline: block; instead display: block .wrap { text-align: center; } .center-block { display: inline-block; } <div class="wrap"> <input value="Button" class="center-block" type="submit" /> </div> ...

How to reduce the size of picture on the background?

css

If you're trying to set fixed background image, this is example to scale and align your background image: .pic-wrap { display: block; height: 296px; background-image: url(https://pbs.twimg.com/profile_images/590966305248784384/1gX6-SY6_400x400.jpg); background-size: 256px; background-position: 20px 50%; background-repeat: no-repeat; padding-left: 296px; border: 1px solid #ddd; } @media only screen and (max-width: 320px) { .pic-wrap { background-size:...

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