我有一个表单,其中包含helper字段,我需要在rails应用程序中获取每个字段的值。
<%= form.fields_for :expenses do |expense| %>
<%= render 'expense_fields', f: expense %>
<% end %>
<%= link_to_add_fields "Add field", form, :expenses %>
expense_fields.html.erb
<div class="row">
<div class="col-md-5">
<div class="form-group">
<%= f.label :expense_name %>
<%= f.select(:expense_name, options_for_select([['Hotel', 'hotel'],
['Registration', 'registration'],
['Meals', 'meals'],
['Flight', 'flight'],
['Mileage', 'mileage'],
['Car Rental', 'car rental'],
['Parking', 'parking'],
['Traning', 'training']],), { include_blank: true }, id: 'principal_selection', class: 'form-control') %>
</div>
</div>
<% if current_user.admin? || current_user.principal? || current_user.super? %>
<div class="col-md-3">
<% else %>
<div class="col-md-7">
<% end %>
<div class="form-group">
<%= f.label :expense_cost %>
<%= f.number_field :cost, class: 'form-control', placeholder: 'Cost', step: :any %>
</div>
</div>
<% if current_user.principal? || current_user.admin? || current_user.super? %>
<div class="col-md-4">
<div class="form-group">
<%= f.label :payment_type %>
<%= f.select(:payment_type, options_for_select([['Out of pocket', 'Out of Pocket'], ['Corporate Card', 'Corporate Card'], ['PO', 'PO']], selected: "Half Day"), { include_blank: false }, class: 'form-control') %>
</div>
</div>
<% end %>
</div>
我检查了rails指南,但是无法找到直接提取select helper中每个字段的值的方法。有人有什么想法吗?
我尝试做selected: "#{@expense.expense_name}"
但得到一个nil错误,因为没有定义@expense。所以我进入了pdforms控制器中的编辑方法并尝试了这个:
def edit
@expenses = @pdform.expenses
end
这没有结果,所以我尝试了这个:
def edit
@expenses = @pdform.expenses
@expenses.each do |ex|
@expense = ex
end
但是,在编辑时,它只返回表单中的一个值。还有其他想法吗?
当您使用fields_for
时,您引用的每个项目在每个.object
实例上都可用作field
。所以在这种情况下,使用:
f.select(selected: f.object.expense_name ...