ruby on rails - How to get if or unless statement to work over multiple lines in erb template -

-

i'm trying write in logic erb template in chef cookbook. have following, thought work. @ moment attribute there nil, it's not skipping whole block thought would. how top statement cause template reader skip whole block?

    <% unless node['base']['logstash-forwarder']['nginx'].nil? %>       <%= "{" %>       <%= "\"paths\": [" %>       <% node['base']['logstash-forwarder']['nginx'].each |path| %>         <% unless path.equal? node['base']['logstash-forwarder']['nginx'].last %>         <%= "\"#{path}\"," %>         <% end %>       <% end %>     <%= "\"#{node['base']['logstash-forwarder']['nginx'].last}\"" %>     <%= " ]," %>     <%= "\"fields\": { \"type\": \"nginx-access\" }" %>     <%= "}" %>   <% end %>

your exact code above works precisely expected in erb, see:

[122] pry(main)> e = erb.new <<'eoi' [122] pry(main)*  <% unless node['base']['logstash-forwarder']['nginx'].nil? %> [122] pry(main)*       <%= "{" %> [122] pry(main)*       <%= "\"paths\": [" %> [122] pry(main)*       <% node['base']['logstash-forwarder']['nginx'].each |path| %> [122] pry(main)*         <% unless path.equal? node['base']['logstash-forwarder']['nginx'].last %> [122] pry(main)*         <%= "\"#{path}\"," %> [122] pry(main)*         <% end %> [122] pry(main)*       <% end %> [122] pry(main)*     <%= "\"#{node['base']['logstash-forwarder']['nginx'].last}\"" %> [122] pry(main)*     <%= " ]," %> [122] pry(main)*     <%= "\"fields\": { \"type\": \"nginx-access\" }" %> [122] pry(main)*     <%= "}" %> [122] pry(main)*   <% end %> [122] pry(main)* eoi => #<erb:0x007fe74bb35ff8  @encoding=#<encoding:utf-8>,  @filename=nil,  @lineno=0,  @safe_level=nil,  @src=   "#coding:utf-8\n_erbout = ''; _erbout.concat \" \";  unless node['base']['logstash-forwarder']['nginx'].nil? ; _erbout.concat \"\\n      \"\n; _erbout.concat(( \"{\" ).to_s); _erbout.concat \"\\n      \"\n; _erbout.concat(( \"\\\"paths\\\": [\" ).to_s); _erbout.concat \"\\n      \"\n;  node['base']['logstash-forwarder']['nginx'].each |path| ; _erbout.concat \"\\n        \"\n;  unless path.equal? node['base']['logstash-forwarder']['nginx'].last ; _erbout.concat \"\\n        \"\n; _erbout.concat(( \"\\\"\#{path}\\\",\" ).to_s); _erbout.concat \"\\n        \"\n;  end ; _erbout.concat \"\\n      \"\n;  end ; _erbout.concat \"\\n    \"\n; _erbout.concat(( \"\\\"\#{node['base']['logstash-forwarder']['nginx'].last}\\\"\" ).to_s); _erbout.concat \"\\n    \"\n; _erbout.concat(( \" ],\" ).to_s); _erbout.concat \"\\n    \"\n; _erbout.concat(( \"\\\"fields\\\": { \\\"type\\\": \\\"nginx-access\\\" }\" ).to_s); _erbout.concat \"\\n    \"\n; _erbout.concat(( \"}\" ).to_s); _erbout.concat \"\\n  \"\n;  end ; _erbout.concat \"\\n\"\n; _erbout.force_encoding(__encoding__)"> [123] pry(main)> node = { 'base' => { 'logstash-forwarder' => {}}} => {"base"=>{"logstash-forwarder"=>{}}} [124] pry(main)> path = nil => nil [125] pry(main)> e.result binding => " \n" [126] pry(main)>

so problem either chef weird (seems unlikely) or node isn't nil? think is.

update

reading between lines, @ .each , .last calls, possible node['base']['logstash-forwarder']['nginx'] not nil rather []?

if so, change .nil? check .empty?


Comments

Post a Comment

Popular posts from this blog

python - How to create jsonb index using GIN on SQLAlchemy? -

-
here's current code creating index jsonb. index("mytable_data_idx_id_key", mytable.data['id'].astext, postgresql_using='gin') but got error. sqlalchemy.exc.programmingerror: (psycopg2.programmingerror) data type text has no default operator class access method "gin" hint: must specify operator class index or define default operator class data type. [sql: "create index event_data_idx_id_key on event using gin ((data ->> 'id'))"] is there way create index on sqlalchemy? the postgresql specific sqlalchemy docs @ http://docs.sqlalchemy.org/en/latest/dialects/postgresql.html#operator-classes mention postgresql_ops dictionary provide "operator class" used postgresql, , provide example illustrating use: index('my_index', my_table.c.id, my_table.c.data, postgresql_ops={ 'data': 'text_pattern_ops', ...
Read more

PHP DOM loadHTML() method unusual warning -

-
i had following code works fine on localhost: $document = new domdocument(); $document->loadhtml($p_result); $form = $document->getelementsbytagname('form')->item(0); // code continues using $form variable after same code updated on outside server, loadhtml() failed , issued warning. warning: domdocument::loadhtml() expects parameter 1 valid path, string given in path/name/to/script.php returned null instead of object code pretty gets fatal error. note contents of $p_result absolutely same on outside server , on localhost. but why displays kind of warning , why not work? doesn't loadhtml() expects argument 1 string in first place? why method expects parameter 1 valid path ? just make clear i'm not calling loadhtmlfile() , i'm calling loadhtml() . thanks. you're affected one of php bugs . issue present in php 5.6.8 , 5.6.9. have affected php version on server, , bug-free version on localhost. the bug forbids null ...
Read more

c# - TransactionScope not rolling back although no complete() is called -

-
i'm using transactionscope rollback transaction fail bool errorreported = false; action<importerrorlog> newerrorcallback = e => { errorreported = true; errorcallback(e); }; using (var transaction = new transactionscope()) { foreach (importtaskdefinition task in taskdefinition) { loader.load(streamfile, newerrorcallback, task.destinationtable, processingtaskid); } if (!errorreported) transaction.complete(); } i'm sure there no transactionscope started ahead or after code. i'm using entity framework insert in db. regardless state of errorreported transaction never rolled in case of error. what missing ? transactionscope sets transaction.current . that's does. wants transacted must @ property. i believe ef each time connection opened reason. probably, connection open when scope installed. open connection inside of scope or enlist manually. ef has nasty "design decision": default opens ...
Read more