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POHow to update DOM after modal form submission on Rails
 

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  1. POHow to update DOM after modal form submission on Rails
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    <p>I am trying to handle my sign up process with modal forms, using Twitter Bootstrap. I can get the form to submit, the modal to close, and everything works fine, except the DOM is not unobtrusively updated.</p> <p>After a user signs in, the navigation bar (which is rendered with a partial and has ruby in it) should no longer have a link for "Sign up", and it should acquire a link "Sign out".</p> <p>Since I can't use <code>render</code> in my coffeescript file which manages the form submission, how can I re-render the nav bar so to speak to make it reflect the successful sign up/modal form submission?</p> <p><strong>Modal Form (HAML):</strong></p> <pre><code>= simple_form_for @user, remote: true, html: {data: {type: 'html'}, class: 'form-horizontal'} do |f| %div.modal-header %button.close{"aria-hidden" =&gt; "true", "data-dismiss" =&gt; "modal", :type =&gt; "button"} × - if @user.errors.any? #error_explanation %h2= "#{pluralize(@user.errors.count, "error")} prohibited this user from being saved:" %ul - @user.errors.full_messages.each do |msg| %li= msg %div.modal-body =render 'form', f: f %div.modal-footer = f.button :submit, name: 'Sign Up', class: "btn-primary", id: "new_user_button" =link_to "Sign In", signin_path </code></pre> <p><strong>jquery handling form submission:</strong></p> <pre><code>$ -&gt; $("#new_user_button").click -&gt; valuesToSubmit = $("#new_user").serialize() $("#signup_modal").modal "hide" $.ajax( url: "/users" data: valuesToSubmit type: "POST" ).success (data, status) -&gt; #update the DOM? </code></pre> <p><strong>Controller:</strong></p> <pre><code>def create @user = User.new(params[:user]) respond_to do |format| if @user.save #SignupMailer.new_subscriber(@user).deliver sign_in @user format.html { redirect_to root_path, notice: "Thank you for signing up!" } format.json { render json: @user, status: :created, location: @user } # format.js {'create'} else format.html { render action: "new" } format.json { render json: @user.errors, status: :unprocessable_entity } #format.js end end </code></pre> <p><strong>Navigation Partial (HAML):</strong> need to unobtrusively change these elements after form submission and modal close!</p> <pre><code>%ul.nav.nav-pills.pull-right -if signed_in? %li{:class =&gt; "#{'active' if current_page?(user_path(current_user))}"}=link_to "Your page", user_path(current_user) %li=link_to "Sign out", signout_path, :class =&gt; "#{'active' if current_page?(root_path)}" -else %li= link_to_modal 'Sign Up', new_user_path, :width=&gt; "600", :height =&gt;"400", :remote =&gt; true, :id =&gt; "new_user_link" %li=link_to "Sign In", signin_path, :class =&gt; "#{'active' if current_page?(root_path)}" </code></pre>
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    1. USBrian
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    1. COI think you better reload the page. It's a lot of hassle to replace all elements that are user-dependent (and even if now there's only one doesn't mean it will be that way)
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      1. POHow to update DOM after modal form submission on Rails
      1. USMike Szyndel
    2. COfair enough...i've become so fixated on making it work, it didn't really occur to me to just go around the issue. However, if you know of a general paradigm to apply to this case, I'd love to hear it. I appreciate the level-headed advice thought
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      1. POHow to update DOM after modal form submission on Rails
      1. USBrian
 

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