Moving a rails form into a separate view - ruby-on-rails

Question

I have a form in my rails 5 app that takes in User data and stores it in a mysql db.
Everything works great. However, I want to move this form into a separate view that does not correspond to its class name/model, controller name and view.
Can this be done by simply rendering the form into a separate view as a partial?
Any advice would be great.
Controller file:
class UserLeadsController < ApplicationController
def index
#user_lead = UserLead.all
end
def new
#user_lead = UserLead.new
#lead_reasons = LeadReason.all.map{ |r| [r.name, r.id] }
#lead_sources = LeadSource.all.map{ |s| [s.name, s.id] }
end
def create
#user_lead = UserLead.new(user_lead_params)
#user_lead.lead_reason_id = params[:lead_reason_id]
#user_lead.lead_source_id = params[:lead_source_id]
#user_lead.save
redirect_to user_leads_path
end
private
def user_lead_params
params.require(:user_lead).permit(:name, :businessname, :phone, :email, :amount)
end
end
Lets say this is UserLeadController, I want to place its form partial into a view inside of my HomeController? Can this be done?
This is the partial, it tells me #user_lead is nil or empty? I cant seem to see how it is?
<%= form_for #user_lead, url: user_leads_path, html: {class: 'col-12'}, remote: true do |f| %>
<div class="col-12 px-0 text-center">
<h4 class="fl-color-navy">Some heading here</h4>
</div>
<div class="col-12 progress-container-center">
<div class="col-12 progress-bar-block">
<div class="progress-bar">
<ol class="progress-steps">
<li class="progress-step step1 current-step" style="width: 0%;"> <span class="count highlight-index"></span></li>
<li class="progress-step step2 current-step" style="width: 100%;"> <span class="count"></span></li>
</ol>
</div>
</div>
</div> ....

Answer 1

Rendering the forms in a partial works fine. Submitting the form will direct the browser to the controller as normal if the view is correct (Presumably UserLeadsController#create, question didn't include the view code).
If things like #lead_reasons and #lead_sources are important to render the view, that is a little more tricky. Of course in simple cases the partial can just do it inline, you could also for example add a helper method that gets those and then renders the partial passing stuff to the locals param. e.g.
module ApplicationHelper
def user_leads_form
lead_reasons = LeadReason.all.map{ |r| [r.name, r.id] }
lead_sources = LeadSource.all.map{ |s| [s.name, s.id] }
render partial: "user_leads_form", locals: {lead_reasons: lead_reasons, lead_sources: lead_sources}
end
end
If you wanted it to go back to the previous page in some cases, e.g. for validation errors, you would need to add that, possibly by adding a parameter to the form, or inspecting the Referer request header (intentional misspelling!).
If you wanted it to not leave the page at all, then that is getting into client side scripting solutions.