json format in ruby on rails?

Question

How to send data in database and show in needed part by using json format in ruby on rails3?

my form is like this

<%= form_for(@user) do |f| %>
  <% if @user.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@user.errors.count, "error") %> prohibited this user from being saved:</h2>

      <ul>
      <% @user.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :name %><br />
    <%= f.text_field :name %>
  </div>
  <div class="field">
    <%= f.label :email %><br />
    <%= f.text_field :email %>
  </div>
  <div class="field">
    <%= f.label :login %><br />
    <%= f.text_field :login %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

Blake Simpson · Accepted Answer · 2012-07-05 14:07:36Z

1

In the controller:

def show
  @user = User.find(params[:user_id]
  respond_to do |format|
    format.json { :render => @user }
  end
end

You can customise the JSON output by overriding the as_json in the User model:

  def as_json(options=false)
    self.include_root_in_json = false
    options = (options || {}).reverse_merge(
      :except => [:updated_at, :created_at, :id],
      :include => :some_association
    )
    super(options)
  end

answered Jul 5, 2012 at 14:07

Blake Simpson

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