As of yet, we haven't actually hooked up any of this new shiny logic in our form, so if we try to submit anything we'll just see a generic error message that isn't very helpful. One thing that we left out of each of our forms is a per-field error message. Phoenix will helpfully wrap any errors inside of a span with a help-block class, so first let's open up assets/css/app.css and add the following code:
span.help-block { color: #f00;}
Next, we'll jump into our users form and start adding error_tag statements to each of our fields. Open up lib/vocial_web/templates/user/form.html.eex and follow along with each field update as follows:
- Username:
<%= label f, :username, "Username:" %><br /><%= text_input ...
