这一天大部分时间都让我难过。我正在尝试为连接表创建嵌套表单。
我希望用户从可能的5个位置中进行选择，这些位置在数组中具有各自的ID。用户从作业页面的编辑操作中选择这些位置，因此我通过执行以下操作来获取作业ID：
@job.job_locations.build
这是我被困的地方。
我已添加到我的工作模式accepts_nested_attributes_for :job_locations，按照协会的顺序排在下面。
然后我的表格
=simple_form_for edit_admin_job_path(@job) do |f|
=f.simple_fields_for :job_locations do |p|
=p.input :location_id, collection: @common_locations_array
=f.submit
我错过了什么？
我使用的是Rails 4，haml和简单的表单。
它可以是嵌套表单中的我的集合吗？该集合包含该位置的所有信息，而不仅仅是id。我不能设置输入值吗？我该怎么做？
添加了控制器操作
def edit
unless @job = Job.find_by(id: params[:id])
flash[:error] = "Job could not be found"
if @job_subject
redirect_to(admin_polymorphic_jobs_path(@job_subject))
else
redirect_to root_path # points to /admin/searches/new
end
end
@job.job_locations.build
@location = Location.new
@client = @job.client
@locations_grouped_hash = JobLocation.group(:location_id).distinct.count(:id)
@common_locations_hash = @locations_grouped_hash.sort_by { |k, v| v }.reverse.first(5).to_h
@common_locations_array = []
@common_locations_hash.each do |k, v|
@common_locations_array << Location.find(k)
end
@job_types = JobType.get_all_job_types
end
# PUT-PATCH /admin/jobs/:id admin_job_path
# PUT-PATCH /admin/clients/:client_id/jobs/:id admin_client_job_path
# PUT-PATCH /admin/contacts/:contact_id/jobs/:id admin_contact_job_path
def update
@job = Job.find_by(id: params[:id])
was_frozen = @job.workflow_frozen?
@job.assign_attributes(job_params)
job_changes = @job.changes
will_be_frozen = @job.workflow_frozen?
# this MUST be atomic!
ActiveRecord::Base.transaction do
@job.freeze_stock! if (will_be_frozen && !was_frozen)
if @job.save
flash[:success] = "attributes updated"
else
flash[:error] = "Couldn't update the job. Please check for errors."
@job_types = JobType.get_all_job_types
render('admin/jobs/edit') and return
end
@job.unfreeze_stock! if (!will_be_frozen && was_frozen)
end
# We clear the associations before proceeding, because even
# if params[:locations] is missing, it just means that the
# user has deselected all of them before submitting
@job.locations.clear
# ...and here we re-add only the selecred ones
if params[:locations]
params[:locations].each do |loc_id|
this_location = Location.find_by(id: loc_id)
@job.locations << this_location if this_location
# we can safely assume that all of these locations already belong to the client
end
end
# OLD - replaced by NEW, below:
# We clear the associations before proceeding, because even
# if params[:contacts] is missing, it just means that the
# user has deselected all of them before submitting
# @job.contacts.clear
if params[:contacts]
# NEW
# first we need to remove the "not selected" contacts
new_contact_ids = params[:contacts].map { |item| item.to_i }
@job.contacts.each do |associated_contact|
unless new_contact_ids.include?(associated_contact.id)
@job.contacts.delete(associated_contact)
end
end
# and now we add the selected ones
# (we assume that all of these contacts already belong to the client)
new_contact_ids.each do |new_contact_id|
this_contact = Contact.find_by(id: new_contact_id)
begin
@job.contacts << this_contact if this_contact
rescue ActiveRecord::RecordInvalid
# the contact was already assigned
end
end
else
# all unchecked, let's remove them all
@job.contacts.clear
end
AdminActivity.job_details_updated!(current_admin, @job, job_changes)
redirect_to edit_admin_job_path(@job)
end
由于
答案 0 :(得分：1)
我相信您需要= p.input :location_id, collection: @common_locations_array而不是=f.input，因为您正在为location_id更新job_location。
<强>更新
与@ user3868832聊天后，他不得不更新：
=simple_form_for edit_admin_job_path(@job) do |f|
到=simple_form_for :job do |f|
允许他的表单实际点击update操作。