Develop Reference

Is jQuery .append breaking my Rails form and causing it not to fully render?

Running into a strange issue. I using jQuery's .append() to place a <div> containing a Rails form next to the paragraph tag a user selects in my Rails app.
First off, before adding the jQuery effect, I tested this by placing a the form on the page. It loaded, worked, and posted the user's text to my database correctly.
Second, I added this effect, and the <div> with the form does load, but weirdly, you cannot click into it. The text cursor will appear for a moment, disappear, and the user can not actually enter anything in the text_field.
Here's what I am running:
view.html.erb
<% #posts.each do |post| %>
<h2 id="title"><%= post.title %></h2>
<div id="paragraph"><%= markdown(post.content) %></div>
<% end %>
<div class="exampleToggle"> <!-- div that should append -->
<%= form_for :comments do |f| %>
<div class="form-group">
<div class="field">
<%= f.label :username %><br>
<%= f.text_field :username, class: "form-control" %>
</div>
</div>
<div class="form-group">
<div class="field">
<%= f.label :post %><br>
<%= f.text_area :post, class: "form-control" %>
</div>
</div>
<div class="actions">
<%= f.submit "Save", class: "btn btn-success-outline" %>
</div>
<% end %>
</div>
<script>
$(document).ready(function(){
var whatever = document.getElementsByClassName("exampleToggle");
$("p").click(function(){
$(this).append(whatever);
});
});
</script>
As I mentioned, the form does load and looks how it should after clicking on a paragraph element; however, the form will not accept text input.
Also, for clarity's sake, here is the CSS involved with the placing the <div> to the right of the clicked paragraph:
{
position: relative;
}
.exampleToggle {
position: absolute;
top: 0;
margin-left: 8%;
left: 100%;
width: 35%;
height: 100px;
}
Any idea why this is breaking the form/form helper?
EDIT 1: For clarity, the central issue here seems to be the Focus effect. To try and fix this, I updated the Javascript to allow for value entry when the .field class is activated, but it did not fix it. Here's what I tried.
<script>
$(document).ready(function(){
var whatever = document.getElementsByClassName("exampleToggle");
$("p").click(function(){
$(this).append(whatever);
});
$('.field').click(function () {
var val = $(this).val();
if (val == "") {
this.select();
}
});
});
</script>

You have given $("p"), but there is no p tag in your question.
Also you are looping the same id to different fields which is not correct, ID should be unique. Instead take the class instead of id.
You should take a class to the paragraphed_id field and should write the jquery functions based on the required classes.
Try this,
<% #posts.each do |post| %>
<h2 id="title"><%= post.title %></h2>
<div class="paragraph"><%= markdown(post.content) %></div>
<% end %>
<div class="exampleToggle"> <!-- div that should append -->
<%= form_for :comments do |f| %>
<div class="form-group">
<div class="field">
<%= f.label :username %><br>
<%= f.text_field :username, class: "form-control" %>
</div>
</div>
<div class="form-group">
<div class="field">
<%= f.label :post %><br>
<%= f.text_area :post, class: "form-control" %>
</div>
</div>
<div class="actions">
<%= f.submit "Save", class: "btn btn-success-outline" %>
</div>
<% end %>
</div>
<script>
$(document).ready(function(){
var whatever = document.getElementsByClassName("exampleToggle");
$(".paragraph").click(function(){
$(this).append(whatever);
});
});
</script>

Why does jQuery only enter the function in some links?

I am relatively new to jQuery and JavaScript, so I'm having this issue, hope you can help me through it.
I am making an e-commerce page for selling cloths in Rails 4, so I am focusing more than I used to in the form of displaying forms and all of that, so it can be more attractive to the users. Because of that, I have the forms hidden and I set the values to it via jQuery.
The problem can be divided in two parts:
The first part of the problem is in the cloths#show where the user add the cloth to his cart:
Form:
<%= form_for #order_item, remote: true do |f| %>
<h5>Select a size</h5>
<div class="input-sizes">
<% #sis.each do |si| %>
<%= link_to si.size.letter, "#{si.size_id}", class:"normal-size" %>
<% end %>
</div>
<%= f.hidden_field :size_id, id: "size-input" %>
<h5>Select a color</h5>
<div class="input-colors">
<% #cos.each do |co| %>
<%= link_to "#{co.color_id}", id: "link-circle" do %>
<div id="circle" style="background: <%= co.color.hex %>">
<div id="mini-circle"></div>
</div>
<% end %>
<% end %>
</div>
<%= f.hidden_field :color_id, id: "color-input" %>
...
<% end %>
jQuery:
//Select size
$('a.normal-size').on('click', function(e){
e.preventDefault();
var value = $(this).attr("href");
$('#size-input').val(value);
$(this).removeClass("normal-size").addClass("selected").siblings().removeClass("selected").addClass("normal-size");
});
//Select Color
$('#link-circle').on('click',function(e){
e.preventDefault();
var value = $(this).attr("href");
$('#color-input').val(value);
$(this).children().children().css('opacity', '1');
return false;
});
The set of the size input works perfectly but in the color input the user only can select the first color because if the user wants to select the second, the jQuery function doesn't gets called so it goes to the link (I tried even writing e.preventDefault() and return false at the same time).
The second part of the problem comes in the cart#show when the user can see the summary of all his cloths. In this it is displayed a table with each row being a cloth, here the user can see the image of the cloth, description, selected color, selected size and price. The color and size section is made for the user so he can edit his cloth if he changes his mind and select another size or color. The issue in here is in both size and color and I don't know why. In the color section happens exactly the same as above, but in the size section he can only make one click because if he makes another one the jQuery function doesn't get called. Is like if the click only works once:
Form:
<%= form_for (order_item), remote: true,:url => "/order_items/#{order_item.id}", :html=>{:id=>'item_form_cart'} do |f| %>
<div class="input-colors col-md-1">
<% #cos.each do |co| %>
<% if co.cloth == order_item.cloth %>
<% if co.color_id == order_item.color_id %>
<%= link_to "#{co.color_id}", id: "link-circle" do %>
<div id="circle" style="background: <%= co.color.hex %>;">
<div id="mini-circle" style="opacity: 1;"></div>
</div>
<% end %>
<% else %>
<%= link_to "#{co.color_id}", id: "link-circle" do %>
<div id="circle" style="background: <%= co.color.hex %>;">
<div id="mini-circle"></div>
</div>
<% end %>
<% end %>
<% end %>
<% end %>
</div>
<%= f.hidden_field :color_id, id: "color-input" %>
<div class="input-sizes col-md-2">
<% #sis.each do |si| %>
<% if si.cloth == order_item.cloth %>
<% if order_item.size_id == si.size_id %>
<%= link_to si.size.letter, "#{si.size_id}", class:"selected" %>
<% else %>
<%= link_to si.size.letter, "#{si.size_id}", class:"normal-size cart-el" %>
<% end %>
<% end %>
<% end %>
</div>
<%= f.hidden_field :size_id, id: "size-input-cart" %>
...
<% end %>
jQuery:
//Select size
$('a.normal-size.cart-el').on('click',function(e){
e.preventDefault();
var value = $(this).attr("href");
$(this).parent().next('#size-input-cart').val(value);
$(this).removeClass("normal-size").addClass("selected").siblings().removeClass("selected").addClass("normal-size");
$(this).closest('#item_form_cart').submit();
});
In here I only make the size function because I didn't know how to fix the color one, but this also has a bug, that only gets called the first time. This happens no matter which cloth's size you select, e.i. if I change the first cloth's size works good but if I want to change again the same cloth's size or change the size of another cloth the jQuery function doesn't get called.
Hope you can help me,
Thanks in advance.
Edit:
I have investigated more about why is happening the second problem and I saw that it can be related to Ajax, because in my form if a user changes the size or color it gets done by Ajax, as we can see here. I tried the second solution but it did not work:
$('.well').on('click','a.normal-size.cart-el',function(e){
e.preventDefault();
var value = $(this).attr("href");
$(this).parent().next('#size-input-cart').val(value);
$(this).removeClass("normal-size").addClass("selected").siblings().removeClass("selected").addClass("normal-size");
$(this).closest('#item_form_cart').submit();
});
$('.well').on('click','.link-circle.cart-el',function(e){
e.preventDefault();
var value = $(this).attr("href");
$(this).parent().next('#color-input-cart').val(value);
$(this).siblings().children().children().css('opacity', '0');
$(this).children().children().css('opacity', '1');
$(this).closest('#item_form_cart').submit();
});
And here is render each item in the view:
<div class="order_items">
<% #order_items.each do |order_item| %>
<div class = "well">
<%= render 'carts/cart_row', cloth: order_item.cloth, order_item: order_item, show_total: true %>
</div>
<% end %>
</div>

Your select color function is attached to the id "link-circle". It looks like you're potentially rendering multiple elements with the same id. Your select size function is based on a class which you can have on multiple elements. You cannot however have the same id on multiple elements according to w3 . Try changing "link-circle" to a class like so..
<%= link_to "#{co.color_id}", class: "link-circle" do %>
and the your selector to..
$('.link-circle').on('click',function(e){

Change CSS for each item in Rails each method

So my each method works, but I am trying to add some code to make the dice change to its color that it is given. I am using rails and jquery/javascript. I just want to print the "dice type" and have it printed in the color it is given. Any thoughts?
Heres my original code:
<% #last_move.rolls.last.results.each do |dice| %>
<li>
<%= dice.type %> - <%= dice.color %>
</li>
<% end %>
And heres is my sorry failed attempt to make it just display the type with the color given:
<% #last_move.rolls.last.results.each do |dice| %>
<li>
<script>
$(this).css({ color: "<%= dice.color %>" });
</script>
<%= dice.type %>
</li>
<% end %>

I wouldn't use JavaScript for this, instead:
<% #last_move.rolls.last.results.each do |dice| %>
<li class="dice-<%= dice.color %>">
<%= dice.type %> - <%= dice.color %>
</li>
<% end %>
Then in your css:
.dice-red {
color: //red, etc.
}

How do I apply function to just the class a jquery ajax submission was done from?

Here is the code I'm currently using:
$.ajax({
success: function(){
$('.post_container').append('test <br />');
}
});
<% sleep 1 %>
It is similar to the code I used for my single main micropost form but with this there are several comments that use the same class and so test is being applied to all post_containers rather than the one the post was just made to. "test" text will eventually be replaced with the div that holds the actual comments users post.
Normally I would use "this" but that won't work here.
HTML:
<div class="post_content">
<div class="post_container">
<div class="userNameFontStyle">
<%= link_to current_users_username.capitalize, current_users_username %> -
<div class="post_time">
<%= time_ago_in_words(m.created_at) %> ago.
</div>
</div>
<%= simple_format h(m.content) %>
</div>
<% if m.comments.any? %>
<% comments(m.id).each do |comment| %>
<div class="comment_container">
<%= link_to image_tag(default_photo_for_commenter(comment), :class => "commenter_photo"), commenter(comment.user_id).username %>
<div class="commenter_content">
<div class="userNameFontStyle">
<%= link_to commenter(comment.user_id).username.capitalize, commenter(comment.user_id).username %> - <%= simple_format h(comment.content) %>
</div>
</div>
<div class="comment_post_time">
<%= time_ago_in_words(comment.created_at) %> ago.
</div>
</div>
<% end %>
<% end %>
<% if logged_in? %>
<%= form_for #comment, :remote => true do |f| %>
<%= f.hidden_field :user_id, :value => current_user.id %>
<%= f.hidden_field :micropost_id, :value => m.id %>
<%= f.text_area :content, :placeholder => 'Post a comment...', :class => "comment_box", :rows => 0, :columns => 0 %>
<div class="commentButtons">
<%= f.submit 'Post it', :class => "commentButton" %>
<div class="cancelButton">
Cancel
</div>
</div>
<% end %>
<% end %>
</div>
</div>
How would I deal with this?
Kind regards

NEW:
$(function() {
$('.post-form').submit(function(){
var $post_content = $(this).find('.post_content');
$.ajax({
url: this.attributes['action'],
data: $(this).serialize(),
success: function() {
$post_content.append('test <br />');
}
})
return false; //this will stop the form from really submitting.
});
});
This should do what you're looking for. Simply include this javascript anywhere.
OLD:
$('form').submit(function(){
$.ajax({
url: this.attributes['action'],
data: $(this).serialize(),
//the below line might need to be adapted.
var post_content = $(this).find('.post_content');
success: function() {
$(post_content).append('test <br />');
}
})
this assumes that there is only one form on the page. However, for the code to completely work, I need to know how to differentiate which .post_content is the "submitted" post_content. How do you programatically determine that? Is there a different button for each post_content? Or are there different forms around each post_content div? Whichever way it is, you'll have to include that somehow into the js code.

This is how I had to do it in the end.
.new_comment is my form id
$('.new_comment').on('ajax:success', function(){
$(this).parent('.post_content').find('.comment_container:last').after("<BR />TEST <BR />");
});
<% sleep 1 %>
The only issue now is identifying the actual comment_container for the post just made.

Ruby on Rails: Javascript: How to grob focus when the text box appears

So, I have
<script type="text/javascript">
function grabFocus(){
document.getElementByID("category_name").focus();
}
</script>
<div>
<h1>New category</h1>
<br/>
<% remote_form_for :category, #category, :url=>{:action=>'ajax_create'} do |f| %>
<%= f.error_messages %>
<%= f.hidden_field :object_type %>
<p>
<%= f.text_field :name, :label=>false %>
<%= f.submit 'Create' %>
</p>
<% end %>
<br/>
</div>
and before I just had the
<script type="text/javascript">
document.getElementByID("category_name").focus();
</script>
at the bottom of the file.
but other websites suggested that I make it a function, and call it in onLoad... but the partial I'm working with (entire thing pasted above) doesn't have a body...
I'm showing the partial in the iframe that facebox uses...
ideas?

got it...
its Id.. not ID...
sad mistake.
getElementById