Ruby on Rails

This is totally doable without javascript.    Rails works perfectly fine without Javascript.    

You will need to re-render the page from the server on any change/submit.  That is ok (I suspect the exercise they are trying to teach you is that these sorts of interactions *can* be done in a server rendered way but when you get to the JS modules it will be easier and a better experience for the customer).    

Each seat would need to be a submit button and on the server you would check the value of params[:commit] to validate.  Once the seat is assigned/allocated you would re-render the page and show the correct styling.

  <% @seats.each do |seat| %>

    <% if seat.occupied %>

      <div class="occupied">X</div>

    <% else %>

      <%= f.submit seat.id, class: "available" %>

    <% end %>

  <% end %>

On Mon, Feb 11, 2019 at 9:55 AM Daniel Toma <tomada36@gmail.com> wrote:

Hi, thank you very much for replying.  I forgot to mention a biggie:   that JS isn't allowed.  I can use CSS and Bootstrap but no JS allowed in this particular project (JS is our next module).

I sense that Ruby (on Rails) isn't particularly geared for this type of interactivity.

On Sunday, February 10, 2019 at 2:25:30 AM UTC-5, hasan...@gmail.com wrote:

Daniel,

On Sat, 9 Feb 2019 at 23:13, Daniel Toma <toma...@gmail.com> wrote:

  I just can't think of how this would be done, and I was wondering if anyone had an idea.

While you could use ruby for this, a Javascript solution is going to be less heavy on the server. Simply define a class for blue and a class for red as follows in CSS:

.available { background-image("//location/of/green/image"); }

.taken { background-image("//location/of/red/image"); }

.na { background-image("//location/of/unavailable/image"}; }

Now that these are defined, you can set the class on submit using jquery's .addClass after removing the old one using .removeClass. Good luck, matey and let me know if you need further assistance.

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