我跟随http://simple-form-bootstrap.plataformatec.com.br/examples/input_group的例子
我从<%= simple_form_for app, wrapper: :input_group do |f| %>
开始并获得Couldn't find wrapper with name input_group
,所以我取消注释
config.wrappers :input_group, tag: 'div', class: 'form-group', error_class: 'form-group-invalid', valid_class: 'form-group-valid' do |b|
b.use :html5
b.use :placeholder
b.optional :maxlength
b.optional :minlength
b.optional :pattern
b.optional :min_max
b.optional :readonly
b.use :label, class: 'form-control-label'
b.wrapper :input_group_tag, tag: 'div', class: 'input-group' do |ba|
ba.optional :prepend
ba.use :input, class: 'form-control', error_class: 'is-invalid', valid_class: 'is-valid'
ba.optional :append
end
b.use :full_error, wrap_with: { tag: 'div', class: 'invalid-feedback d-block' }
b.use :hint, wrap_with: { tag: 'small', class: 'form-text text-muted' }
end
在simple_form_bootstrap.rb
并获得undefined method
append'为类SimpleForm::Inputs::StringInput'
而不是。
关于这个<%= f.input :subdomain, append: "example.com" %>
的问题
我如何使用它,这甚至支持simple_form?不知道他们为什么评论那段代码。
创造config/initializers/simple_form_component.rb
module InputGroup
def prepend(wrapper_options = nil)
span_tag = content_tag(:span, options[:prepend], class: "input-group-text")
template.content_tag(:div, span_tag, class: "input-group-prepend")
end
def append(wrapper_options = nil)
span_tag = content_tag(:span, options[:append], class: "input-group-text")
template.content_tag(:div, span_tag, class: "input-group-append")
end
end
# Register the component in Simple Form.
SimpleForm.include_component(InputGroup)