Custom Routing with singular resource error - ruby-on-rails

Question

my routes are looking like this
routes.rb
get '/:pimp_id/mepagers(.:format)', :to => 'mepagers#index', :as => 'mepagers'
get '/:pimp_id/mepager/new(.:format)', :to => 'mepagers#new', :as => 'new_mepager'
get '/:pimp_id/mepager/edit(.:format)', :to => 'mepagers#edit', :as => 'edit_mepager'
get '/:pimp_id/mepager(.:format)', :to => 'mepagers#show', :as => 'mepager'
post '/:pimp_id/mepager(.:format)', :to => 'mepagers#create', :as => 'create_mepager'
put '/:pimp_id/mepager(.:format)', :to => 'mepagers#update'
patch '/:pimp_id/mepager(.:format)', :to => 'mepagers#update'
delete '/:pimp_id/mepager(.:format)', :to => 'mepagers#destroy'
I tried to take the form from
HTTP Verb Path Controller#Action Used for
GET /geocoder/new geocoders#new return an HTML form for creating the geocoder
POST /geocoder geocoders#create create the new geocoder
GET /geocoder geocoders#show display the one and only geocoder resource
GET /geocoder/edit geocoders#edit return an HTML form for editing the geocoder
PATCH/PUT /geocoder geocoders#update update the one and only geocoder resource
DELETE /geocoder geocoders#destroy delete the geocoder resource
(source http://guides.rubyonrails.org/routing.html)
But when I click the submit button on /1/mepager/new I get following error:
Routing Error
No route matches [POST] "/1/mepager/new"
I even tried to change the post actions route to /1/mepager/new but that didnt help at all because he cant find the param for mepager then. Coudlnt find anything similar on google so I hope someone can help this routing makes me sick!
new.html.erb
<%= render 'form' %>
<%= link_to 'Back', pimps_path %>
_form.html.erb
<%= form_for 'mepager_path' do |f| %>
<% if #mepager.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#mepager.errors.count, "error") %> prohibited this mepager from being saved:</h2>
<ul>
<% #mepager.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<table style="border:1px solid black; border-spacing:5px"; width="1521" bgcolor="#DFDFDF">
<colgroup>
<col width="1050">
<col width="300">
</colgroup>
<tr> <td> <h1>NEW: ID# Title </td> <td> <h1>Programme: a350</h1></td> </tr>
</table>
<p id="notice"><%= notice %>
<table style="border:1px solid black; border-spacing:5px"; width="1500"; height="640">
<tr>
<th rowspan="3">
<table style="border:1px solid black; border-spacing:5px"; width="1150"; height="506">
<colgroup>
<col width="675">
<col width="675">
</colgroup>
<tr> <th colspan="2" align="left" height="10"> <u><strong>Change description & pictures:</strong></u> </th> </tr>
<tr> <th colspan="2" align="left" height="10"> <u><b>Pre:</b></u> </th> </tr>
<tr>
<td align="left" valign="top"> <div class="field"> <%= f.text_area :pre, :size=>"100x12"%> </div> </td>
<td>
<div class="actions">
<%= file_field_tag :file %>
<%= submit_tag "Upload image" %>
</div>
</td>
</tr>
<tr> <th colspan="2" align="left" height="10"> <u><b>Post:</b></u> </th> </tr>
<tr>
<td align="left" valign="top"> <div class="field"> <%= f.text_area :post, :size=>"100x12" %> </div> </td>
<td>
<div class="actions">
<%= file_field_tag :file %>
<%= submit_tag "Upload image" %>
</div>
</td>
</tr>
</table>
</th>
<td valign="top">
<table style="border:1px solid black; border-spacing:5px"; width="350"; height=135>
<colgroup>
<col width="160">
<col width="190">
</colgroup>
<tr> <th colspan="2" align="left" height="10"> <u><strong>Expected savings / overspend reduction:</strong></u> </th> </tr>
<tr> <td align="left"> h/AC: </td> <td align="left"> <div class="field"> <%= f.number_field :save_h, :size=>5 %> </div> </td> </tr>
<tr> <td align="left"> concessions/AC: </td> <td align="left"> <div class="field"> <%= f.number_field :save_c, :size=>5 %> </div> </td> </tr>
<tr> <td align="left"> others: </td> <td align="left"> <div class="field"> <%= f.text_field :save_other, :size=>30 %> </div> </td> </tr>
</table>
</td>
</tr>
<tr>
<td>
<table style="border:1px solid black; border-spacing:5px"; width="350"; height=180>
<colgroup>
<col width="160">
<col width="190">
</colgroup>
<tr> <th colspan="2" align="left" height="10"> <u><strong>Affected domains / responsibility:</strong></u> </th> </tr>
<tr> <td align="left"> Design: </td> <td align="left"> <div class="field"> <%= f.text_field :affect_design, :size=>30 %> </div> </td> </tr>
<tr> <td align="left"> Stress: </td> <td align="left"> <div class="field"> <%= f.text_field :affect_stress, :size=>30 %> </div> </td> </tr>
<tr> <td align="left"> Manufacturing: </td> <td align="left"> <div class="field"> <%= f.text_field :affect_me, :size=>30 %> </div> </td> </tr>
<tr> <td align="left"> Others: </td> <td align="left"> <div class="field"> <%= f.text_field :affect_other, :size=>30 %> </div> </td> </tr>
</table>
</td>
</tr>
<tr>
<td>
<table style="border:1px solid black; border-spacing:5px"; width="350"; height=135>
<colgroup>
<col width="160">
<col width="190">
</colgroup>
<tr> <th colspan="2" align="left" height="10"> <u><strong>Affected documents:</strong> </u> </th> </tr>
<tr> <td align="left"> Drawing number/HTZ: </td> <td align="left"> <div class="field"> <%= f.text_field :affect_dno, :size=>30 %> </div> </td> </tr>
<tr> <td align="left"> Material ID: </td> <td align="left"> <div class="field"> <%= f.text_field :affect_mid, :size=>30 %> </div> </td> </tr>
<tr> <td align="left"> Others: </td> <td align="left"> <div class="field"> <%= f.text_field :affect_otherdoc, :size=>30 %> </div> </td> </tr>
</table>
</td>
</tr>
<tr>
<td>
<table style="border:1px solid black; border-spacing:5px"; width="1150"; height=196>
<tr height="10"> <th align="left"> <u><b>Comments / current status / further notes:</b></u> </th> </tr>
<tr> <td align="left" valign="top"> <div class="field"> <%= f.text_area :save_h, :size=>"100x8"%> </div> </td> </tr>
</table>
</td>
<td>
<table style="border:1px solid black; border-spacing:5px"; width="350"; height=150>
<colgroup>
<col width="160">
<col width="190">
</colgroup>
<tr> <th colspan="2" align="left" height="10"> <u><strong>General information:</strong></u> </th> </tr>
<tr> <td align="left"> Idea owner: </td> <td align="left"> <div class="field"> <%= f.text_field :owner, :size=>30 %> </div> </td> </tr>
<tr> <td align="left"> Date of submission: </td> <td align="left"> autofilled </td> </tr>
<tr> <td align="left"> PPS available: </td> <td align="left"> <div class="field"> <%= f.text_field :pps, :size=>30 %> </div> </td> </tr>
<tr> <td align="left"> Reference (VV/ZTV): </td> <td align="left"> <div class="field"> <%= f.text_field :reference, :size=>30 %> </div> </td> </tr>
</table>
</td>
</tr>
</table>
<div class="actions">
<%= f.submit "Create One Pager" %>
</div>
<% end %>

Answer 1

See documentation on form_for here
Referring to the documentation linked to above; the form_for method takes a few parameters:
record
options
block
In your case, I think what you trying to do is pass the 'mepager_path' named path as the URL to which the form should be submitted. However, you're missing separators for your form_for parameters so Rails thinks 'mepager_path' is the value of the record parameter.
the record parameter is meant to convey information about the object which the form should describe so that Rails can infer properties of the object to make the form for you with minimal overhead to you, the developer. In your case, I think you can try someting like
<%= form_for :mepager, url: mepager_path do |f| %>
I'm also a Rails noob so I can't promise you my code samples are correct but the gist of my answer is that your form_for parameters are incorrect. As someone new to Rails, I'm constantly frustrated by different forms parameters can take. For me the multitude of forms make them difficult to read and I constantly have to make sure I'm not misinterpreting code. Also, hash syntax always confuses me.
My answer was taken from here. I've found it to be a very useful reference site.
Hope my answer helps you.