[英]how to avoid prompt as selected in select2 gem
我用過select2-rails gem。 應用時,也可以選擇提示。 如何避免選擇提示?
您也可以在元素上執行類似的操作,而無需在Javascript中指定占位符。
<%= f.collection_select :method, Model.all, :id, :name,
{include_blank: true}, data: {placeholder: 'Choose Model'}, class:
"select2"%>
假設您已在javascript文件中的某處使用select2初始化此元素。
使用'placeholder'選項,如下所示:
$(element).select2(placeholder: 'select one option', ** other options here);
在YOURVIEW.HTML.SLIM
select.form-control#js__multiselect multiple="multiple" name='your_name[]' value="#{params[:your_value]}"
= options_from_collection_for_select(Model.all, :id, :value, params[:your_params])
# :id, :value are what values you want to show from your Model.
# params[:your_params], which is array is your selected value.
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