-1
我有一个应用程序,用户可以在其中提交项目。对于每个字段,他们都可以选择将新数据放入数据库,或者从传递的项目中选择旧数据以填充该字段。Ruby on Rails:未定义的方法`new_tech'
我无法得到这个对于这段代码在我的新观点工作:
<%= form_for(@technol) do |tech| %>
<div class="field">
<%= tech.label :tech %><br />
<%= tech.text_field :new_tech, :maxlength => 30 %><br />
OR<br />
<%= collection_select(:technols, :id, @all_technols, :id, :tech, {}, {:multiple => true}) %>
</div>
<%end%>
这是我的新创建行动:
新
def new
@project = Project.new
@technol = Technol.new(params[:tech])
@all_technols = Technol.all
tech_ids = params[:technols][:id].reject(&:blank?) unless params[:technols].nil?
@project_technol = @project.projecttechnols.build
respond_to do |format|
format.html # new.html.erb
format.json { render json: @project }
end
end
创建
def create
@all_technols = Technol.all
@project = Project.new(params[:project])
@technol = Technol.new(params[:tech])
@project.client = params[:new_client] unless params[:new_client].blank?
@project.project_owner = params[:new_project_owner] unless params[:new_project_owner].blank?
@technol.tech = params[:new_tech] unless params[:new_tech].blank?
@project.role = params[:new_role] unless params[:new_role].blank?
@project.industry = params[:new_industry] unless params[:new_industry].blank?
@project.business_div = params[:new_business_div] unless params[:new_business_div].blank?
params[:technol].each_value do |tech|
technology = Technol.find_or_create_by_tech(tech.strip)
@project_technol = @project.projecttechnols.build(:technol_id => technology.id)
end
respond_to do |format|
if @project.save
format.html { redirect_to @project, notice: 'Project was successfully created.' }
format.json { render json: @project, status: :created, location: @project }
else
format.html { render action: "new" }
format.json { render json: @project.errors, status: :unprocessable_entity }
end
end
end
有了这个代码,我正在试图打开创建新的项目页面时,这个错误:
NoMethodError in Projects#new
line #261 raised:
undefined method `new_tech' for #<Technol id: nil, tech: nil, created_at: nil, updated_at: nil>
Extracted source (around line #261):
258: <%= form_for(@technol) do |tech| %>
259: <div class="field">
260: <%= tech.label :tech %><br />
261: <%= tech.text_field :new_tech, :maxlength => 30 %><br />
262:
263: OR<br />
264:
任何想法?我是一个铁轨小菜,所以请试着回答时记住这一点。任何帮助都感激不尽。在此先感谢
感谢您的帮助相匹配。如果用户从下拉菜单中选择了某些东西,现在不会覆盖它。我试图通过这样做来解决这个问题,'@technol.tech = params [:new_tech]除非params [:new_tech] .blank?' – Jazz
如果你仍然想使用new_tech字段为用户添加一些,你可以做到这一点通过使用text_field_tag而不是tech.text_field http://api.rubyonrails.org/classes/ActionView/Helpers/FormTagHelper.html#method-i-text_field_tag – oldergod