Question

您好我有一个角色应用，用户可以拥有多个角色。我正在使用Roles Model Gem。如下所示：

4.2.5@2.2.4 (main)> User.valid_roles
=> [
    [0] :admin,
    [1] :report_writer,
    [2] :candidate,
    [3] :client_contact
]

我想要一个可以为用户选择多个角色的复选框表单。我已经尝试了一个小时但无法弄明白。有人可以帮忙吗？

这是表格

%h1 Edit User

= form_for @user, url: admin_user_path(@user) do |f|

.form-group
  = f.label :first_name
  = f.text_field :first_name

.form-group
  = f.label :last_name
  = f.text_field :last_name

.form-group
  = f.label :email
  = f.text_field :email

.form-group
  = f.label :password
  = f.password_field :password

.form-actions
  = link_to "Cancel", admin_users_path, class: "btn btn-grey"
  = f.submit class: "btn btn-primary pull-right"

Answer 1

Haven't used role_model gem, but looking at docs, the following should work:

<%= form_for @user, url: admin_user_path(@user) do |f| %>
  ...
  <div class='form-group'>
    <% User.valid_roles.each do |valid_role| %>
      <div>
        <%= valid_role.humanize %>
        <%= f.check_box :roles, multiple: true, valid_role %>
      </div>
    <% end %>
  </div>
  ...
<% end %>

After submitting the form, your server should receive the following params (example when checked both 'admin' and 'client_contact'):

{
  user: {
    first_name: '...',
    last_name: '...',
    email: '...',
    password: '...',
    roles: [
     'admin',
     'client_contact'
    ]
  }
}

Do not forget to include roles: [] to strong params. Example below:

users_controller.rb

def create
  @user = User.new(user_params)
  ...
end

...

private

def user_params
  params.require(:user).permit(:first_name, :last_name, :email, :password, roles: [])
end

如何使用Rails表单和角色模型Gem

1 个答案: