I am trying to load two spinners on two fields, in the same (rails) form, that both have a keyup remote call.
Using Jquery, I have the following code:
<div class="form_element">
<%= f.label :email, :class=>"field_hint", :title=>"Email" %>
<%= f.text_field :email %>
<div class="myloader" style="display:none;">
<p>
validating...
</p>
</div>
</div>
<div class="form_element">
<%= f.label :username, :class=>"field_hint", :title=>"Username" %>
<%= f.text_field :username %>
<div class="myloader" style="display:none;">
<p>
validating...
</p>
</div>
</div>
Both of these fields have a keyup that does a remote call:
$('.form_element').ajaxStart(function() {
$(this).children('.myloader').show();
});
$('.form_element').ajaxStop(function() {
$(this).children('.myloader').delay(1000).fadeOut('fast');
});
At the moment when an the ajax happens both spinners appear when I only want the spinner who is a sibling of the field, I am trying to work out how to make each spinner div relevant to its field.
I am new to Ajax so any advice on maybe doing the ajaxStart/Stop differently are more than welcome, maybe a way to only have one spinner which moves next to the field instead of having two would be helpful.
I encourage you to use this jQuery plugin for your task: http://plugins.jquery.com/project/nimbleLoader
It will allow you to create loading bar for any element in your web page. Here you can see example: http://www.salesclic.com/jquery.nimble.loader/demo/
Related
I've previously been able to use the following code to link to an external site listed in a form. However, I can't get it work here. My controller defines the parameter and it's in the view and in my db/schema (t.string "website").
Is there something I'm missing?
/show
<p>
<strong>Website:</strong>
<%= link_to #woman.website %>
</p>
The website shows up in active admin in my db, but not as a link. This is what the form partial asks the user to input:
/_form
<div class="form-group">
<%= f.label :website %><br>
<%= f.text_field :website, class: "form-control" %>
</div>
Every time I click the link, it just reloads the same page I'm on. Would appreciate any insight.
You missed the href part, try this
<%= link_to #woman.website, #woman.website %>
I dint even understand how to search for my problem scenario in google.
Problem : When a user selects from a drop-down, the below form fields should change accordingly.
Example : If a user selects "Human" from Drop-down , then below form_fields should be shown like "age" field ,"ethnicity" field etc..
If a user selects "Event" from drop-down, below form fields should show "Date", "venue" etc..
and By default we will have "SUBMIT" button.
Can anyone tell how to achieve this ? Any help with simple_form ruby gem also would be helpful.
You can do this with some simple javascript. Lets say you have a form with the following fields
<%= f.select :some_field, %w[Human Cat], {}, {:class => 'my-select'} %>
<div class="human">
<%= f.label :age %><br>
<%= f.text_field :age %>
</div>
<div class="cat" style="display:none;">
<%= f.label :sub_species %><br>
<%= f.text_field :sub_species %>
</div>
Now add some javascript to make it dynamic
<script>
$(".my-select").change(function(){
if($(".my-select").val() == "Human"){
$(".human").css('display', 'block');
$(".cat").css('display', 'none');
}else{
$(".human").css('display','none');
$(".cat").css('display', 'block');
}
})
</script>
This is quite easy to achieve with the simple_form gem and some simple javascript.
View
<%= simple_form_for #object do |f| %>
<%= f.input :attribute_name, :collection => ['Human', 'Event'], :input_html => { :class => 'dropdown' %>
<div class="toggle human" style="display:none;">
<%= f.input :age %>
</div>
<div class="toggle event" style="display:none;">
<%= f.input :date %>
</div>
<%= f.button :submit %>
<% end %>
The key here is wrapping the fields you want to toggle in div with specific selectors.
Then we look for a change event on the dropdown field, and toggle our divs accordingly.
Javascript
$('.dropdown').change(function() {
// hide divs first
$('form .toggle').hide();
// get value from dropdown
var divClass = $('.dropdown').val().toLowerCase();
// show necessary div
$('.' + divClass).show();
});
Using this approach, you don't need to write the specific case for every value of the dropdown, but can use the lower case value of the dropdown as the selector for the div.
Here is a simple example with static markup.
I have a a partial, _form for one of my views in rails. It looks like so:
<%= form_for(#project) do |f| %>
<div class="field">
<%= f.label "Project Status" %><br />
<%= f.select :status, ["In Progress", "Cancelled"] %>
</div>
<div class="field">
<%= f.label "Capital Cost" %><br />
<%= f.text_field :capital_cost %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
I'd like the "capital cost" part of the form to be greyed out unless "In Progress" is selected from the dropdown menu, without having to reload the page. Is this possible? I saw some solutions using javascript, but I'm a complete beginner and couldn't get my head around them (unfortunately I don't have the time to learn to use js before I have to finish this project). Cheers!
For this you need some JavaScript. Use an onchange event handler to monitor the <select> input for changes. Compare the input value and conditionally set/unset a disabled attribute on the #project_capital_cost input. You can use jQuery for this.
By default, Rails 3 enables jQuery by including the jquery_rails gem in your Gemfile. Assuming you have jquery_rails included in your app and your <select> and <input> tags have #project_status and #project_capital_cost IDs respectively, add the following script into your _form partial with necessary modification:
<script>
$(document).ready(function(){
if($('#project_status').val() != "In Progress"){
$("#project_capital_cost").attr('disabled','disabled');
}
else{
$("#project_capital_cost").removeAttr('disabled');
}
$('#project_status').change(function(){
if($(this).val() != "In Progress"){
$("#project_capital_cost").attr('disabled','disabled');
}
else{
$("#project_capital_cost").removeAttr('disabled');
}
})
});
</script>
EDIT:
To hide div give some id to it:
<div class="field" id="my_div">
<%= f.label "Capital Cost" %><br />
<%= f.text_field :capital_cost %>
</div>
Then replace
$("#project_capital_cost").attr('disabled','disabled'); with $("#my_div").css('display','none')
and
$("#project_capital_cost").removeAttr('disabled'); with $("#my_div").css('display','block') in script.
To grey out the input, use the HTML input tag attribute disabled.
<input disabled="disabled">
Which from Rails is
<%= f.text_field :capital_cost, :disabled => "disabled", :id => "capital_cost_input" %>
To enable it when "In Progress" is selected will require AJAX and Javascript, but there is some help from Rails.
First
<%= f.select :status, ["In Progress", "Cancelled"],
{},
"data-remote" => true, "data-url" => ..._path %>
This will set the onchange attribute for you and make the AJAX call.
Add a route to handle the AJAX call, and supply the URL for the "data-url".
In the view template for the AJAX action, write the Javascript to enable the input.
Something like
$('#capital_cost_input').removeAttr("disabled")
I have an Exercise model, which has these columns (pseudo Ruby):
model Exercise do
string :name
calories_burned :float
end
I want that when a user adds an exercise to be able to do it in this fashion:
if previous exercises exist
show a select element with names of existing added
show a checkbox to allow adding a new one, switching the input
field to a textfield
else
show a textfield
The thing is, I don't know how I should put this in my view. Here's how the else case is handled:
<div class="field">
<%= f.label :name %><br />
<%= f.text_field :name %>
</div>
I have something like this now:
<div class="field">
<% if #exercise_added %>
<div id="select_div">
<%= select_tag :name,options_for_select(#exercise_added) %>
<input type="checkbox" name="custom_type_checked" id="which_type">New type?</input>
</div>
<% end %>
<div id="regular_field">
<%= f.label :name %><br />
<%= f.text_field :name %>
</div>
</div>
In #exercise_added I have a list of names of all exercises from the database. What would be the best/cleanest way of handling this?
EDIT: For now,I have a textfield and a select, and by using Javascript, I'm changing the name of the element ( and hiding the other one ). So far, it's working, but I'd still be interested if other approaches exist.
You can check if the array #exercise_added is empty or not and show the select field or text field accordingly.
<div class="field">
<% if !#exercise_added.empty? %>
<div id="select_div">
<%= select_tag :name,options_for_select(#exercise_added) %>
<input type="checkbox" name="custom_type_checked" id="which_type">New type?</input>
</div>
<% else %>
<div id="regular_field">
<%= f.label :name %><br />
<%= f.text_field :name %>
</div>
<%end%>
</div>
I would, by default, have the select box and a button shown, with the textbox hidden unless a variable #show_textbox is true. Something like this:
<div class="field">
<div id="select_div">
<%= select_tag :name,options_for_select(#exercise_added) %>
<%= f.submit "New Exercise" %>
</div>
<div id="regular_field" <%= hidden_unless #show_textbox %> >
<%= f.label :name %><br />
<%= f.text_field :name %>
</div>
</div>
Where I've written a helper function
def hidden_unless cond
raw "style=\"display: none;\"" unless cond
end
# this one is helpful, too
def hidden_if cond
raw "style=\"display: none;\"" if cond
end
Then, in my controller, check if the "New Exercise" button was pressed. If so, essentially set #show_textbox to true and then re-render the new form.
def create
# .....
# did we get here because the user pressed "New Exercise"?
if params[:commit].eql?("New Exercise")
#show_textbox = true
# probably some other code to replicate what happens in your #new action
render :action => new
end
# ....
end
You can check in your controller if the :name field has any text in it, and use that to override the select box.
This should work without javascript. I'd add some jQuery to replace the button with either a link or a check box, with the click handler for that connected to a function that shows the textbox, i.e. $('#regular_field').toggle();.
I didn't deal with hiding the select box. I actually think it might be better to leave that available. You could hide it using a similar method, anyways.
What if you used two forms? One form to handle the case when the exercise is in #exercise_added, and a second form to handle the creation of a new exercise. It might even boil down to the difference between a POST and a PUT, depending on what you're doing once an exercise is submitted from the drop-down list.
I'd be curious to see more of the code, as well as the controller, since it seems like this form might be nested?
I am trying to enhance an existing Rails application using React (react-rails gem).
This app has a form built with following code:
<%= form_for #article do |f| %>
<div class="form-group">
<%= f.label :title %>
<%= f.text_field :title %>
</div>
<div class="form-group">
<%= f.label :body %>
<%= f.text_area :body, size: "60x12" %>
</div>
<div class="form-group">
<label><%= f.checkbox :sets_expiration_date %> Sets expiration date</label>
<%= f.date_select :expiration_date, start_year: Date.today.year %>
</div>
<button type="submit" class="btn btn-default">Create</button>
<% end %>
I want this form to have following functionalities:
When the user toggles the checkbox, the three drop-down lists for the expiration_date field shows or hides.
When the user submits, the form data is sent to the server via Ajax for validation and persistence.
When the validation fails, the relevant labels and input fields get surrounded with red border.
When the form data gets saved successfully, the form disappears and a message appears.
In my first attempt, I managed to achieve the goal but I found that I had to write vanilla HTML code a lot.
This is a disappointment for me.
Especially, I don't like to specify the name and defaultValue attributes for each <input> tag
like <input name="article[title]" defaultValue={this.props.object.title}>.
I also had to write rather long JavaScript code to create three drop-down lists for the expiration_date field.
How can I construct such a form using React efficiently? Are there any good plugins?