预先填充活动记录对象的所有属性

Question

我正在使用 rails 4，我正试图让它与最新的预输入一起使用。下拉列表显示匹配的活动记录对象的所有属性，而不仅仅是我想要的名称。

item.rb

  def self.search(search)
    if search
      where(['lower(name) LIKE ?', "%#{search}%"])
    else
      Item.all
    end
  end

items_controller.rb

  def index
    @items= Item.search(params[:query])
  end

  def typeahead
    render json: Item.where('name ilike ?', "%#{params[:query]}%")
  end

_header.html.erb

.
.
.
<script>
$(document).ready(function(){
    var bloodhound = new Bloodhound({
      datumTokenizer: Bloodhound.tokenizers.obj.whitespace('name'),
      queryTokenizer: Bloodhound.tokenizers.whitespace,
      limit: 10,  
      remote: {url: '/typeahead/%QUERY',
               wildcard: '%QUERY'}  
    });
    bloodhound.initialize();

    $('#typeahead').typeahead(null, {
      name: 'name',
      source: bloodhound.ttAdapter()
    });

    $('#typeahead').bind('typeahead:selected', function(event, datum, name) {
      window.location.href = '/items/' + datum.id;
    });
  });
</script>

config/routes.rb

get 'typeahead/:query', to: 'items#typeahead'

我可以转到 /typeahead/:query.json 它似乎正常工作。

Answer 1

参见

处的 documentation

display – For a given suggestion, determines the string representation of it. This will be used when setting the value of the input control after a suggestion is selected. Can be either a key string or a function that transforms a suggestion object into a string. Defaults to stringifying the suggestion.

$(document).ready(function() {
  var data = [{
    "id": 4,
    "name": "Flexidy",
    "description": "Impedit libero veniam sit molestias quae.",
    "created_at": "2016-01-07T15:26:45.305Z",
    "updated_at": "2016-01-07T15:26:45‌.305Z",
    "created_by": null,
    "status": 1
  }, {
    "id": 5,
    "name": "Plexidy",
    "description": "Impedit libero veniam sit molestias quae.",
    "created_at": "2016-01-07T15:26:45.305Z",
    "updated_at": "2016-01-07T15:26:45‌.305Z",
    "created_by": null,
    "status": 1
  }];
  var bloodhound = new Bloodhound({
    datumTokenizer: Bloodhound.tokenizers.obj.whitespace('value'),
    queryTokenizer: Bloodhound.tokenizers.whitespace,
    local: $.map(data, function(item) {
      return {
        value: item.name
      }
    })
  });
  bloodhound.initialize();

  $('#typeahead').typeahead({
    highlight: true
  }, {
    name: 'name',
    display: 'name',
    limit: 10,
    templates: {
      suggestion: function(data) {
        console.log(data);
        var details = "<div>" + data.value + "</div>";
        return details
      }
    },
     source: bloodhound.ttAdapter()
  });

  // $('#typeahead').bind('typeahead:selected', function(event, datum, name) {
  //   window.location.href = '/items/' + datum.id;
  // });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="http://twitter.github.io/typeahead.js/releases/latest/typeahead.bundle.js"></script>



<div class="bs-example">
  <input type="text" id="typeahead" />
</div>

预先填充活动记录对象的所有属性

Typeahead populating with all attributes of active record object

search

jquery

ruby-on-rails

typeahead.js