jquery tokeninput javascript in rails3

Question

i have a rails project that has a simple mapped relation like below:

model categories

has_many :stories

model Story

belongs_to category

in my stories controller i have

def new
@story = Story.new
@categories = Category.all
end

then in my new.html.erb i have

<%= form_for @story do |f| %>
<%= f.text_field, :title %>
<%= collection_select(:story, :category_id, @categories, :id, :name)%>
<% end %>

i want to replace the <%= collection_select %>(select box) with <%= f.text_field%>(text field) and populate the data using jquery toxeninput javascript plugin and i dont know how to go about this.

rubish · Accepted Answer · 2011-07-16 01:57:30Z

2

I recently added jquery tokeninput to one of my projects and would try to give a rough step-by-step procedure to get it done:

Get the token input javascript and css and add it to html

Define a method search_category in your controller like following:

def search_category
  # find the matching categories, Category.search method should implement all the logic needed
  categories = params[:q].blank? ? [] : Category.search(params[:q])

  render :json => categories.collect {|c| {:id => c.id, :name => c.name} }
end

init the jquery tokeninput like following:

$("input#whatever").tokenInput("<%= search_category_path %>", {
  prePopulate: [{ 
                 id: "<%= @story.category.id %>", 
                 name: "<%= @story.category.name %>"
               }],
  tokenLimit: 1 // limits only one selectable category
});

Hope it helps!

answered Jul 16, 2011 at 1:57

rubish

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4 Comments

LearningRoR Over a year ago

How does your form look for the TokenInput part?

rubish Over a year ago

form would be a normal form_for @story with category field defined as f.text_field :category_id, :id => 'whatever'

LearningRoR Over a year ago

OK, Thank you. Perhaps you can answer my bounty since its pretty similar to what you've done. stackoverflow.com/questions/6674127/…

Jonah Katz Over a year ago

@Rubish I have a question about tokeninput thats probably very simple for you, mind taking a quick look? stackoverflow.com/questions/6819481/…

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