Databases
StackOverflow2013
Postsdbo
PORails: ParameterFilter::compiled_filter tries to dup symbol
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PORails: ParameterFilter::compiled_filter tries to dup symbol
    primarykey
    data
    text
    <p>I'm running rails3 with rails exception-notifier gem. When an exception occurs, and an email should be sent, I'm getting an exception from the ParameterFilter class. I've found the problem in the rails source, and am not sure the best way to proceed.</p> <p>The problem occurs in ActionDispatch::Http::ParameterFilter. In the compiled_filter method, an error occurs on line 38: <code>key = key.dup</code> when <code>key</code> is a symbol, because symbols are not duplicable. Here is the source:</p> <pre><code>def compiled_filter ... elsif blocks.present? key = key.dup value = value.dup if value.duplicable? blocks.each { |b| b.call(key, value) } end </code></pre> <p>I see that they only call <code>dup</code> on <code>value</code> when it is <code>duplicable</code>. If I patch the source to only call <code>dup</code> on <code>key</code> when <code>key</code> is <code>duplicable</code>, then my problem goes away. I'm assuming there is a reason why the author put that condition on <code>value</code> and not <code>key</code>, so I'm curious if someone out there has a better understanding of this code.</p> <p>This error only occurs when you add a block to your filter params in application.rb. So, maybe there is a workaround for my original issue that does not require using a block here. If you're interested see my coworker's question <a href="https://stackoverflow.com/questions/5265747/rails-filter-sensitive-data-in-json-parameter-from-logs">Rails: Filter sensitive data in JSON parameter from logs</a> </p> <p>The key for which this is a problem is <code>:action</code>. This comes from rails and I don't know if there is any way to force it to be a string instead.</p> <p>I filed a rails bug <a href="https://rails.lighthouseapp.com/projects/8994/tickets/6557-symbol-duplication-error-in-parameterfilter-compiled_filter" rel="nofollow noreferrer">https://rails.lighthouseapp.com/projects/8994/tickets/6557-symbol-duplication-error-in-parameterfilter-compiled_filter</a> and I have a patch ready that adds if <code>key.duplicable?</code> to the <code>key.dup</code> line, I'm looking for input on whether or not that is the right solution.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCommunity
    1. USandrewmitchell
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. PORails: ParameterFilter::compiled_filter tries to dup symbol
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PORails: ParameterFilter::compiled_filter tries to dup symbol
      1. USthefugal
      1. VTFavorite
    3. VO
      singulars
      1. PORails: ParameterFilter::compiled_filter tries to dup symbol
      1. This table or related slice is empty.
      1. VTUpMod
    1. CODid you ever get an answer to this?
      singulars
      1. PORails: ParameterFilter::compiled_filter tries to dup symbol
      1. USDavid N. Welton
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload