3

Haml: 

 .form-group
            = f.hidden_field :gender, :id => 'select2', :style => "width:100%; height: 40px"

JS: 

 $("#select2").select2({
    createSearchChoice: function (term, data) {
      if ($(data).filter(function () {
            return this.text.localeCompare(term) === this.text;
          }).length === 0) {
        return {
          id: term,
          text: term
        };
      }
      console.log('SELECT2', $("#select2").data.text);
    },
    placeholder: "Enter custom gender or select one below",
    multiple: false,
    data: [{
      id: 'male',
      text: 'male'
    }, {
      id: 'female',
      text: 'female'
    }, {
      id: 'custom',
      text: 'custom'
    }]
});

Select2 is doing everything I need now, but the placeholder is not showing on my view. Any help, much appreciated.

4

2 回答 2

1

我为此编写了一个小咖啡脚本，它可以完成所有正常的自动完成事情以及预填充的数据

$(document).ready ->
  $('.select2').each (i, e) =>
    select = $(e)
    options =
      placeholder: select.data('placeholder')
      minimumInputLength: 1

    if select.hasClass('ajax') # only add ajax functionality if this class is present
      options.ajax =
        url: select.data('source')
        quietMillis: 100
        dataType: 'json'
        data: (term) ->
          q: term
        results: (data) ->
          results: data.resources
          more: false

      options.dropdownCssClass = "bigdrop"
      options.initSelection = (element, callback) ->
        callback({ text: element.attr('data-value') })
    select.select2(options)

而我的隐藏领域是这样的

hidden_field_tag(:search, '', id: 'res_select', class: 'select2 ajax form-control select-overide', style: 'width: 100%;', data: { source: "/products/autocomplete", placeholder: 'Search for a name' }, :value=> params["search"], "data-value" => params['search'])

试试这个它会工作。

于 2015-05-08T06:42:30.427 回答
0

楼上回答的很好。我通过添加占位符填写的空白初始选项，用更少的代码解决了这个问题：

 $('.compare-search').prepend('<option/>').val(function(){return $('[selected]',this).val() ;});
于 2015-05-22T12:11:09.713 回答