class Bezel::FormBuilder

include DslScope

Writes the fields of a form over a rotor changeset (HtmlBuilder#form_for): each field is named <prefix>[<field>] (user[email]), with the id <prefix>_<field>, and shows the value the changeset holds: its change, else the model's; for a permitted field with errors and no change (a value that did not cast, or a blank required one), the input as given, so that it shows as typed. errors writes the changeset's errors on a field.

class FormUser < Rotor::Model
  table "form_users" do
    column :id, Int, primary: true
    column :email, String
  end
end

cs = Rotor::Changeset.cast(FormUser, {"email" => "ann"}, [:email]).validate_format(:email, /@/)
page = Bezel.html do |h|
  h.form_for(cs, action: "/users") do |f|
    f.label(:email, "Email")
    f.text_field(:email)
    f.errors(:email)
  end
end
page.to_s
# => "<form action=\"/users\" method=\"post\"><label for=\"form_user_email\">Email</label><input type=\"text\" name=\"form_user[email]\" value=\"ann\" id=\"form_user_email\" class=\"invalid\" aria-invalid=\"true\"><span id=\"form_user_email_error\" class=\"error\">has invalid format</span></form>"

A field with errors gets the class invalid and aria-invalid.

src/html/form.qz:30

Class methods

Methods