Ruby-on-rails 以简单形式向文本输入添加默认值
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Adding a default value to text-input in simple-form
提问by Mark
I want to add a default value to a text-input field using simple-form.
With :placeholderit is not used as default....
我想使用 simple-form 向文本输入字段添加默认值。有了:placeholder它不作为默认....
<%= f.input :user, :placeholder => '[email protected]' %>
回答by pgrosslicht
<%= f.input :user, :input_html => { :value => '[email protected]' } %>
回答by Lesly Revenge
You can simply do:
你可以简单地做：
<% f.text_field, value: '[email protected]' %>
text_fieldis good if you are working with form search gem like Ransack.
text_field如果您正在使用像 Ransack 这样的表单搜索 gem，那就太好了。
回答by Jeni
On rails 5.1 placeholder: 'aaaaaaaaaaa'works. E.g.
在 Rails 5.1 上placeholder: 'aaaaaaaaaaa'工作。例如
<%= f.input :user, :placeholder => '[email protected]' %>
will work on rails 5.1
将在 Rails 5.1 上工作
回答by Tom Wilson
You can do this in the controller and keep data details out of your forms. Instead of this:
def new
@article = Article.new
end
您可以在控制器中执行此操作，并将数据详细信息保留在表单之外。取而代之的是：
def new
@article = Article.new
end
you can do this:
def new
# hardcode default values (as shown) or generate on the fly
@article = Article.new(title: "10 Best Things")
end
你可以这样做：
def new
# hardcode default values (as shown) or generate on the fly
@article = Article.new(title: "10 Best Things")
end
The "new" form will open with the default (pre-set) values filled in. This should work with simple-form, plain old Rails, or any other form generator that does does things the Rails way..
“新”表单将打开并填充默认（预设）值。这应该适用于简单表单、普通旧 Rails 或任何其他以 Rails 方式执行操作的表单生成器。
