Rails does a good job with the default text displayed by a form label. It takes the primary symbol value you give it and capitalizes that. And that is often good enough.
<%= form_with(model: post) do |form| %>
<%= form.label :title, class: "text-sm font-medium text-gray-700" %>
<%= form.text_field :title, required: true, class: "..." %>
<% end %>
This will yield a label value of Title.
Sometimes, however, the casing needs to be different or you need entirely
different text. Take this URL field for example. Rails will convert :url
into
Url for the label text. Not ideal. I can override the default with a second
positional argument, in this case, "URL"
.
<%= form_with(model: post) do |form| %>
<%= form.label :url, "URL", class: "text-sm font-medium text-gray-700" %>
<%= form.url_field :url, required: true, class: "..." %>
<% end %>
The Rails docs have another good
example.
A label with a value of query
that is overridden to display "Search for:".
<%= form_with url: "/search", method: :get do |form| %>
<%= form.label :query, "Search for:" %>
<%= form.search_field :query %>
<%= form.submit "Search" %>
<% end %>