unerwarteten Einzug Fehler mit favicon_tag nach der Migration 5.0

Question

Mit diesem HAML Teil zu den Schienen

!!! 
%html 
    %head 
     %title=document_title 
     = favicon_link_tag 'logo16.png' 
     %meta{content: form_authenticity_token, name: "csrf-token"}= '' 
     ... 

Ich erhalte den Fehler

SyntaxError: [stdin]:68:1: unexpected indentation 

Also habe ich ein wenig mit falschen identation gespielt; dann bekomme ich andere aber Fehler korrigieren

Inconsistent indentation: "\t\t " used for indentation, but the rest of the document was indented using 1 tab. 
Inconsistent indentation: "\t " used for indentation, but the rest of the document was indented using 1 tab. 
Illegal nesting: content can't be both given on the same line as %title and nested within it. 

und Stack-Trace sieht aus wie

app/views/layouts/page_print.html.haml:5 
haml (4.0.7) lib/haml/parser.rb:174:in `block in tabs' 

aber mit dem unexpected Indentation ich einen interessanten Stapel bekommen - was die coffee_script es tut ?:

compile (C:\Users\halfbit\AppData\Local\Temp\execjs20161121-7752-txwa8bjs:6692:19) 
eval (<anonymous>:1:10) 
C:\Users\halfbit\AppData\Local\Temp\execjs20161121-7752-txwa8bjs:6703:8 
C:\Users\halfbit\AppData\Local\Temp\execjs20161121-7752-txwa8bjs:6709:14 
require./helpers.exports (C:\Users\halfbit\AppData\Local\Temp\execjs20161121-7752-txwa8bjs:1:102) 
Object.<anonymous> (C:\Users\halfbit\AppData\Local\Temp\execjs20161121-7752-txwa8bjs:1:120) 
Module._compile (module.js:409:26) 
Object.Module._extensions..js (module.js:416:10) 
Module.load (module.js:343:32) 
Function.Module._load (module.js:300:12) 
Function.Module.runMain (module.js:441:10) 
startup (node.js:139:18) 
node.js:968:3 
execjs (2.7.0) lib/execjs/external_runtime.rb:39:in `exec' 
execjs (2.7.0) lib/execjs/external_runtime.rb:21:in `eval' 
execjs (2.7.0) lib/execjs/external_runtime.rb:46:in `call' 
coffee-script (2.4.1) lib/coffee_script.rb:78:in `compile' 
sprockets (3.7.0) lib/sprockets/coffee_script_processor.rb:21:in `block in call' 
sprockets (3.7.0) lib/sprockets/cache.rb:85:in `fetch' 
sprockets (3.7.0) lib/sprockets/coffee_script_processor.rb:20:in `call' 
sprockets (3.7.0) lib/sprockets/processor_utils.rb:75:in `call_processor' 
sprockets (3.7.0) lib/sprockets/processor_utils.rb:57:in `block in call_processors' 
sprockets (3.7.0) lib/sprockets/processor_utils.rb:56:in `reverse_each' 
sprockets (3.7.0) lib/sprockets/processor_utils.rb:56:in `call_processors' 
sprockets (3.7.0) lib/sprockets/loader.rb:134:in `load_from_unloaded' 
sprockets (3.7.0) lib/sprockets/loader.rb:60:in `block in load' 
sprockets (3.7.0) lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache' 
sprockets (3.7.0) lib/sprockets/loader.rb:44:in `load' 
sprockets (3.7.0) lib/sprockets/cached_environment.rb:20:in `block in initialize' 
sprockets (3.7.0) lib/sprockets/cached_environment.rb:47:in `load' 
sprockets (3.7.0) lib/sprockets/bundle.rb:23:in `block in call' 
sprockets (3.7.0) lib/sprockets/utils.rb:196:in `dfs' 
sprockets (3.7.0) lib/sprockets/bundle.rb:24:in `call' 
sprockets (3.7.0) lib/sprockets/processor_utils.rb:75:in `call_processor' 
sprockets (3.7.0) lib/sprockets/processor_utils.rb:57:in `block in call_processors' 
sprockets (3.7.0) lib/sprockets/processor_utils.rb:56:in `reverse_each' 
sprockets (3.7.0) lib/sprockets/processor_utils.rb:56:in `call_processors' 
sprockets (3.7.0) lib/sprockets/loader.rb:134:in `load_from_unloaded' 
sprockets (3.7.0) lib/sprockets/loader.rb:60:in `block in load' 
sprockets (3.7.0) lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache' 
sprockets (3.7.0) lib/sprockets/loader.rb:44:in `load' 
sprockets (3.7.0) lib/sprockets/cached_environment.rb:20:in `block in initialize' 
sprockets (3.7.0) lib/sprockets/cached_environment.rb:47:in `load' 
sprockets (3.7.0) lib/sprockets/base.rb:66:in `find_asset' 
sprockets (3.7.0) lib/sprockets/base.rb:73:in `find_all_linked_assets' 
sprockets (3.7.0) lib/sprockets/manifest.rb:142:in `block in find' 
sprockets (3.7.0) lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths' 
sprockets (3.7.0) lib/sprockets/path_utils.rb:228:in `block in stat_tree' 
sprockets (3.7.0) lib/sprockets/path_utils.rb:212:in `block in stat_directory' 
sprockets (3.7.0) lib/sprockets/path_utils.rb:209:in `each' 
sprockets (3.7.0) lib/sprockets/path_utils.rb:209:in `stat_directory' 
sprockets (3.7.0) lib/sprockets/path_utils.rb:227:in `stat_tree' 
sprockets (3.7.0) lib/sprockets/legacy.rb:105:in `each' 
sprockets (3.7.0) lib/sprockets/legacy.rb:105:in `block in logical_paths' 
sprockets (3.7.0) lib/sprockets/legacy.rb:104:in `each' 
sprockets (3.7.0) lib/sprockets/legacy.rb:104:in `logical_paths' 
sprockets (3.7.0) lib/sprockets/manifest.rb:140:in `find' 
sprockets-rails (3.2.0) lib/sprockets/railtie.rb:50:in `each' 
sprockets-rails (3.2.0) lib/sprockets/railtie.rb:50:in `map' 
sprockets-rails (3.2.0) lib/sprockets/railtie.rb:50:in `precompiled_assets' 
sprockets-rails (3.2.0) lib/sprockets/railtie.rb:35:in `asset_precompiled?' 
sprockets-rails (3.2.0) lib/sprockets/railtie.rb:251:in `block (3 levels) in <class:Railtie>' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:359:in `precompiled?' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:363:in `raise_unless_precompiled_asset' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:337:in `digest_path' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:325:in `asset_path' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:102:in `block in resolve_asset_path' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:242:in `block in resolve_asset' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:241:in `each' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:241:in `detect' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:241:in `resolve_asset' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:101:in `resolve_asset_path' 
sprockets-rails (3.2.0) lib/sprockets/rails/helper.rb:79:in `compute_asset_path' 
actionview (5.0.0.1) lib/action_view/helpers/asset_url_helper.rb:144:in `asset_path' 
actionview (5.0.0.1) lib/action_view/helpers/asset_url_helper.rb:311:in `image_path' 
actionview (5.0.0.1) lib/action_view/helpers/asset_tag_helper.rb:176:in `favicon_link_tag' 
app/views/layouts/page_print.html.haml:5:in `_app_views_layouts_page_print_html_haml___1809589845_126062940'  

Kommentieren

#= favicon_link_tag 'logo16.png' 

kein fehler

irgendwelche ideen?

Answer 1

Ich tat es, ich debuggte wieder Rails - ich hasse es, dies zu tun.

Die "Lösung" oder besser sind die Erklärungen sind:

1.) Sprockets behaves completely different in Rails 5.0 that in Rails 3.2 
2.) Sprockets reads and caches the whole assets path with first touch (favicon in this case) 
3.) As far as I can see Sprockets tries to (coffee-) compile manifest.js (?) 
4.) Any compile error is catched (rescued) to late (I would say in HAML in this case) 
5.) Its therefor extremely misleading to get a - coffeescript indentation error pointing to .HAML or .RB file 

Was habe ich getan?

In Sprockes::path_utlis I geändert/hinzugefügt, um eine begin/rescue:

# Public: Stat all the files under a directory. 
# 
# dir - A String directory 
# 
# Returns an Enumerator of [path, stat]. 
def stat_directory(dir) 
    return to_enum(__method__, dir) unless block_given? 

    self.entries(dir).each do |entry| 
    path = File.join(dir, entry) 
    # puts path.to_s 
    begin 
    if stat = self.stat(path) 
     yield path, stat 
    end 
    rescue => e 
     puts "error #{e} in: "+path 
    end 
    end  

die Ausgabe Ich habe:

error SyntaxError: [stdin]:68:1: unexpected indentation in: C:/rbstart/app/assets/javascripts/application.js 
error Undefined variable: "$std_width". in: C:/rbstart/app/assets/stylesheets/application.css 

Da der Fehler von Cachen nicht immer zu reproduzieren.