重用嵌套和不嵌套的表单，如何显示提交按钮
我正在学习 Rails 并构建一个食谱应用程序。
在我的应用程序中，食谱有很多成分。
我的配料表嵌套在我的食谱表中，我用部分来称呼它。
当然，由于表单是嵌套的，
<%= f.submit %>is in the recipes/_form.html.erb page.
所以现在我正在尝试编辑嵌套表单之外的单个成分。我想使用相同的形式，因为它仍然是一种成分。所以我
<% form_for :ingredients, @ingredient, :url{:action =>'update', :id=>@ingredient.id} do |f| %>
<% render :partial => 'form', :locals => {:f=>f} %>
<%= f.submit %>
<% end %>
出于某种原因创建了这个结果，结果只显示提交按钮。
如果我将提交按钮放在部分中，它将显示在食谱表单中，这是不正确的。
I'm learning rails and building a recipe app.
In my app, a Recipe has a bunch of ingredients.
I've got my ingredients form nested within my recipe form, and I call it with a partial.
Of course, because the form is nested, the
<%= f.submit %>
is in the recipes/_form.html.erb page.
So now I'm trying to edit a single ingredient outside the nested form. I want to use the same form though as it is still an ingredient. So I've created
<% form_for :ingredients, @ingredient, :url{:action =>'update', :id=>@ingredient.id} do |f| %>
<% render :partial => 'form', :locals => {:f=>f} %>
<%= f.submit %>
<% end %>
for some reason, this results in only the submit button being shown.
If I put the submit button inside the partial, it would show up within the recipe form which just isn't right.
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评论（1）
您在尝试渲染部分时缺少
=运算符，它应该是：它应该可以工作，希望它对您有帮助！
You are missing the
=operator while trying to render the partial, it should be:It should work, hope it helps you!