javascript - Accessing parent helper in Meteor -

-

i find myself dividing work templates still use same helpers.

so, have template structure:

<template name="maintemplate">   <div>{{> firsttemplate}}</div>   <div>{{> secondtemplate}}</div>   <div>{{> thirdtemplate}}</div>   <div>{{> fourthtemplate}}</div> </template>

now each of these templates wants use same helper, let's call datahelper:

template.maintemplate.helpers({   datahelper: function() {     //do stuff     return result   } })

sadly, helper can't accessed in template first through fourth typing {{datahelper}} how events work.

my solution has been create global helper instead, seems tad overkill, since have few pages don't care these helpers @ all. solution create 4 separate helpers but, hey, dry.

am missing simple here?

there isn't obvious way in current version of meteor. 1 solution child template "inherit" helpers parent. can pretty using meteor-template-extension. here's example:

html

<body>   {{> parent}} </body>  <template name="parent">   <h1>parent</h1>   {{> child}} </template>  <template name="child">   <h2>child</h2>   <p>{{saysomething}}</p> </template>

js

template.parent.helpers({   saysomething: function() {     return random.choice(['hello', 'dude!', 'i know right?']);   } });  template.child.inheritshelpersfrom('parent');

the template child inherits of parent's helpers has direct access saysomething.

this technique has 2 drawbacks:

  • you have specify inheritshelpersfrom relationship
  • all of parent's helpers inherited

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