Rails - render a view in a view - pass params - ruby-on-rails

Question

In my app, I can call a view ('edit.html.erb') using:
<%= link_to( tag.content, [object, tag], method: :patch) %>
What would be the equivalent if I would want to render it within an other view ?
How would I pass it the params?
Edit
In effect I have a view of the parent, in which I want to list the children (editable). These I could edit separately too. Simple solution is that I, create a _partial which I render from the parent's view as well as from edit.html.erb.
I can call this edit.html.erb (or update) using the link:
<%= link_to( tag.content, [object, tag], method: :patch) %>
This works. Now question is how to render that partial (let's call it _update.html.erb) using render? Still need to pass the parent (i.e. object) and child (tag) params. How do I do that using <% render partial "tags/update" PARAMS %>?
Edit for full example
What I am trying to achieve (in short) - allow editing of tags (child) in annotate view (parent).
For an existing record of model/ object "Annotation", I want to add tags for an attached PDF. I do this in a page/view named "Annotate", that I open from the Annotation edit view (using 'link_to'). This "Annotate" page has 2 columns (see screenshot below):
left pane: 2 sections - 1 to quickly add the tag(s) and - 2 to edit existing tags (listed in a table)
right pane: the PDF
Tags and Annotation have polymorphic relationship (set up as per this question)
_form.html.erb for Annotation
<div class="row">
<div class="col-md-6">
<%= simple_form_for #annotation, html: { class: 'form-horizontal', multipart: true },
wrapper: :horizontal_form,
wrapper_mappings: {
check_boxes: :horizontal_radio_and_checkboxes,
radio_buttons: :horizontal_radio_and_checkboxes,
file: :horizontal_file_input,
boolean: :horizontal_boolean
} do |f| %>
<div class="btn-toolbar btn-group", role="toolbar">
<%= f.button :submit, 'Save', :class => "btn btn-xs btn-default" %> <%= link_to 'List' , annotations_path, :class => "btn btn-xs btn-default" %> <% unless #annotation.file.blank? %>
<%= link_to 'Annotate', annotate_path(#annotation), :class => "btn btn-xs btn-default" %>
<% end -%>
</div>
<h4>Annotation</h4>
<%= f.error_notification %>
<% if #annotation.file.blank? %>
<%= f.input :file, as: :file, input_html: { accept: ('application/pdf') } %>
<% else %>
<% end -%>
<%= f.input :name, placeholder: 'Enter name' %>
<%= f.input :description, placeholder: 'Description', :input_html => { :rows => 3 } %>
<%= f.association :documenttype, :collection => Documenttype.active.order(:name), prompt: 'Select document type' %>
<%= f.association :sender, label: 'Submitted by' , prompt: 'Select sender' %>
<%= f.association :receiver, label: 'Specific to', prompt: 'Select recipient' %>
<%= f.input :active, as: :boolean %>
<% end -%>
</div>
<% unless #annotation.file.blank? %>
<div class="col-md-6">
<%= content_tag :iframe, nil, src: pdf_annotation_path(#annotation), width: "100%", height: "770px", frameBorder: "0" %>
</div>
<% end %>
</div>
<% unless #annotation.new_record? %>
<div class="row">
<hr>
<div class="col-md-6">
<%= render #annotation.comments %>
</div>
<div class="col-md-6">
<%= render 'comments/form', :object => #annotation %>
</div>
</div>
<% end -%>
Annotate view annotate.html.erb
<div class="row">
<div class="col-lg-5">
<div class="btn-toolbar btn-group" role="toolbar">
<%= link_to 'Close', annotation_path(#annotation), :class => "btn btn-xs btn-default" %> <%= link_to 'List' , annotations_path, :class => "btn btn-xs btn-default" %>
</div>
<h4>Annotate document</h4>
<div data-spy="affix">
<%= render 'tags/form', :object => #annotation %>
<br>
<div class="panel panel-default" id="annotationResults">
<%= render 'tags/tag_list', :object => #annotation %>
</div>
</div>
</div>
<div class="col-lg-7" id="file">
<%= content_tag :iframe, nil, src: pdf_annotation_path(#annotation), width: "100%", height: "875px", frameBorder: "0" %>
</div>
</div>
tag list _tag_list.html.erb
<table id="tags" class="table table-hover" style="background-color: white; word-wrap: break-word; font-size: 0.9em;" >
<thead>
<tr>
<th>Tagged content</th>
<th>as</th>
<th>in</th>
<th></th>
</tr>
</thead>
<tbody>
<% object.tags.each do |tag| %>
<% unless tag.content.blank? %>
<tr data-tag-id='<%= tag.id %>', class='show-tag'>
<td style="word-wrap: break-word;"><%= link_to( tag.content, [object, tag], method: :patch) %>
<td><%= tag.tagtype.name %></td>
<td><%= tag.tagtype.typeoftag %></td>
<td><%= link_to '', [object, tag], method: :delete, data: { confirm: 'Please confirm!' }, :class => "glyphicon glyphicon-trash" %></td>
</tr>
<tr data-tag-id='<%= tag.id %>', class='edit-tag'>
<td colspan="4"><%= render partial: 'shared/tester' %><%#= render partial: 'tags/update', object: #tag.tagable, tag: #tag %></td>
</tr>
<% end -%>
<% end -%>
</tbody>
</table>
tag update form _update.html.erb
<%= simple_form_for [object, tag], html: { class: 'form-horizontal', multipart: true },
wrapper: :horizontal_form,
wrapper_mappings: {
check_boxes: :horizontal_radio_and_checkboxes,
radio_buttons: :horizontal_radio_and_checkboxes,
boolean: :horizontal_boolean
} do |f| %>
<div class="btn-toolbar btn-group" role="toolbar">
<%= f.button :submit, 'Save', :class => "btn btn-xs btn-default" %>
</div>
<%= f.error_notification %>
tag id = <%= #tag.id %>
<%= f.input :content, placeholder: 'Tagged content'%>
<%= f.association :tagtype, prompt: 'Select tag type', :collection => Tagtype.active.order(:name).where(:documenttype => #tag.tagable.documenttype_id) %>
<%= f.input :location, prompt: 'add as: x1, y1, x2, y2' %>
<% end -%>
Routes
Rails.application.routes.draw do
root 'dashboard#index'
devise_for :users
concern :tagable do
resources :tags, only: [:new, :index, :create, :edit, :update]
end
resources :users, :documenttypes, :tagtypes, :business_partners
resources :tags, only: [:show, :edit, :destroy, :index]
resources :documents do
resources :comments
resources :tags, concerns: :tagable
get "pdf", on: :member
end
resources :annotations do
resources :comments
resources :tags
get "pdf", on: :member
end
get "annotations/:id/annotate" => "annotations#annotate", as: 'annotate'
Tags controller
class TagsController < ApplicationController
def index
#tags = Tag.all.order(:tagable)
end
def show
tagable = detect_tagable
#tag = tagable.tags.find(params[:id])
end
def edit
tagable = detect_tagable
#tag = tagable.tags.find(params[:id])
#tag.update(tag_params)
end
def create
tagable = detect_tagable
tagable.tags.create(tag_params)
redirect_to tagable_path(tagable)
end
def update
tagable = detect_tagable
#tag = tagable.tags.find(params[:id])
render 'edit'
# #tag.save
#tag.update(tag_params)
end
def destroy
tagable = detect_tagable
#tag = tagable.tags.find(params[:id])
#tag.destroy
redirect_to tagable_path(tagable)
end
private
def tagable_path(tagable)
case tagable
when Document
document_path(tagable)
when Annotation
annotate_path(tagable)
else
fail 'Unknown tagable'
end
end
def detect_tagable
if params[:annotation_id]
Annotation.find(params[:annotation_id])
elsif params[:document_id]
Document.find(params[:document_id])
else
fail 'Tagable not found'
end
end
def tag_params
params.require(:tag).permit(:content, :location, :tagtype_id, annotation_attributes: { annotation_ids:[] }, document_attributes: { document_ids:[] })
end
end
This is what I have made - if there is a better way in Rails (which I can image) more then willing to learn.

Answer 1

The approach taken here should be to use nested forms, accepts_nested_attributes_for with allow_destroy: true and reject_if for the validations.
to destroy nested records, use accepts_nested_attributes_for :tags, allow_destroy: true and ensure that (besides :id) also :_destroy
is added to strongparams
to use validations for nested fields, use
accepts_nested_attributes_for :tags, allow_destroy: true,
reject_if: :something_to_check