Question

您好我想根据条件呈现模板，但是我收到了丢失的模板错误：

Missing partial template/default_template with {:locale=>[:es], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:

方式：

module ApplicationHelper
  def select_template_for(analysis)
     special_templates = %w(cat dog)
     selected_template = special_templates.find { |tpl| tpl == analysis } || 'default_template'
     puts selected_template
     render "template/#{selected_template}"
   end  
end

查看：

<%= select_template_for(@result.id_analysis) %>

文件夹结构：

pets
  show (where the helper is called)
  template
     _cat.html.erb
     _dog.html.erb
     _default_template.html.erb

Answer 1

您可以尝试render "pets/template/<template_name>"

示例：

def render_template_for(type)
  partials = %w(cat dog)
  partial = partials.include?(type) ? type : 'default_template'

  render "pets/template/#{partial}"
end

甚至：

def render_template_for(type)
  partial = %w(cat dog) & [type]
  render "pets/template/#{partial[0] || 'default_template'}"
end

和

def render_template_for(type)
  partial = %w(cat dog).delete type
  render "pets/template/#{partial || 'default_template'}"
end

Answer 2

根据ISO4的答案，根据您的方法名称，将您的render语句从帮助方法移出view

方式：

module ApplicationHelper def select_template_for(analysis) special_templates = %w(cat dog) special_templates.find { |tpl| tpl == analysis } || 'default_template' end end

查看：

render "pets/template/#{select_template_for(@result.id_analysis)}"

根据条件渲染部分

2 个答案: