problem with hardcoded html form used with rails

gistfile1.txt

##### CODE IN models/users/show.html.erb ######

<%= form_for user do |f| %>
  <%= f.label :name %>
  <%= f.text_field :name %>

  <% Team.all.each do |team|%>
    <%= check_box_tag( "user[team_ids][]", team.id,
      user.team_ids.include?(team.id),
      id: "user_team_ids_#{team.id}"
    )%>

    <%= label_tag "user_team_ids_#{team.id}", team.name %>
  <% end %>

  <%= f.submit %>
<% end %>

<div>html without rails helper-- NOT WORKING</div>
<form action="/users/<%= user.id%>" method="post">
  <label for="user_name">Name</label>
  <input id="user_name" name="user[name]" type="text" value="<%=user.name%>">
  <input type="hidden" value="<%= user.id%>" name="user[id]">

  <% Team.all.each do |team|%>
    <br/>
    <input id="team_<%= team.id %>"
        name="user[team_ids][]"
        type="checkbox"
        <%= "checked=''" if user.team_ids.include?(team.id) %>
        value="<%= team.id%>">

    <label for="team_<%= team.id %>"><%= team.name %></label>
  <% end %>
  <br/>
  <input type="submit" name="commit">
</form>

##### GENERATED HTML CODE ######

<form accept-charset="UTF-8" action="/users/1" class="edit_user" id="edit_user_1" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="_method" type="hidden" value="put" /><input name="authenticity_token" type="hidden" value="ejdolds7fQkLjEEVRbaFQE1Hcobd/w9Uokvd1wGLGqA=" /></div>
  <label for="user_name">Name</label>
  <input id="user_name" name="user[name]" size="30" type="text" value="mamba" />

    <input checked="checked" id="user_team_ids_1" name="user[team_ids][]" type="checkbox" value="1" />

    <label for="user_team_ids_1">team super dog</label>

  <input name="commit" type="submit" value="Update User" />
</form>

<div>html without rails helper-- NOT WORKING</div>
<form action="/users/1" method="post">
  <label for="user_name">Name</label>
  <input id="user_name" name="user[name]" type="text" value="mamba">
  <input type="hidden" value="1" name="user[id]">

    <br/>
    <input id="team_1"
        name="user[team_ids][]"
        type="checkbox"
        checked=&#x27;&#x27;
        value="1">

    <label for="team_1">team super dog</label>
  <br/>
  <input type="submit" name="commit">
</form>