app/views/project_members/_many_form.html.erb
<%= form_for(@project_member, url: create_many_project_members_path ) do |f| %>
<%= render 'shared/errors', object: @project_member %>
<div class="actions">
<%= f.submit 'Create project member(s)' %>
</div>
<div class="field">
Project: <%= f.label :project_id, @project_member.project.name %><br>
<%= f.hidden_field :project_id -%>
</div>
<div class="field">
<%= f.check_box :is_project_administrator %> <%= f.label :is_project_administrator %> <span class="warning"> All selected members will be set as project administrators.</span>
</div>
<h3> Users </h3>
<% if @target_letters.size > 5 -%>
<%= a_to_z_links(@target_letters) -%>
<% end %>
<% @available_users.group_by{|u| u.name[0].upcase}.each do |group, users| %>
<h3><%= link_to(group, '#alphabet_nav', name: group) if @target_letters.size > 5 -%></h3>
<% users.in_groups_of(5, false).each do |g| -%>
<div style="float: left">
<% g.each do |user| -%>
<label>
<%= check_box_tag "project_member[user_ids][]", user.id %>
<%= user.name %> | <%= user.email.gsub(/...@.../, '*******') %>
</label><br>
<% end %>
</div>
<% end %>
<br style="clear:both;" />
<% end %>
<br>
<div class="actions">
<%= f.submit 'Create project member(s)' %>
</div>
<% end %>