Add Override Text Displayed By Form Label as a Rails TIL

rails/override-text-displayed-by-form-label.md

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+# Override Text Displayed By Form Label
+
+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.
+
+```ruby
+<%= 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"`.
+
+```ruby
+<%= 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](https://guides.rubyonrails.org/form_helpers.html#a-generic-search-form).
+A label with a value of `query` that is overridden to display "Search for:".
+
+```ruby
+<%= form_with url: "/search", method: :get do |form| %>
+  <%= form.label :query, "Search for:" %>
+  <%= form.search_field :query %>
+  <%= form.submit "Search" %>
+<% end %>
+```