Using nunjucks, how can I define some global variables that should always be available within all templates?
Ideally, they would be specified somewhere in the environment or config options and not have to be merged into the context dict with each call to nunjucksEnvironment.render
.
A variable looks up a value from the template context. This documents details on the variables available in JMWE and how to create custom variables. If you want to insert the value of a variable in your template, you can use the following syntax: {{ myVar }} .
A global variable is one declared at the start of the code and is accessible to all parts of the program. Since Java is object-oriented, everything is part of a class. ... A static variable can be declared, which can be available to all instances of a class.
The best way we can use that is - spring cloud config server externalized configuration. We can create a microservice for spring cloud config server. In config server we can create our variables and configuration in two ways. Using local file system / Environment variables.
It might be also helpfull for someone. It is possible to avoid writing any js code when dealing with global variables in nunjucks.
You need to create a _globals.html file, which contains all the global variables.
{% set some_var1 = "Foo" %}
{% set some_var2 = "Bar" %}
Then include _globals.html to any page, where you need the global variable. E.g. somePage.html
{% import '_globals.html' as globals %}
<span>{{globals.some_var1 }}</span>
<span>{{globals.some_var2 }}</span>
For more info please check http://mozilla.github.io/nunjucks/templating.html#set
I was just looking for this and came here. Looks like there's now a recommended way which was added in recently in version 1.0.6.
See Environment.addGlobal.
It's not documented (or perhaps advised), but this works:
var njglobals = require('nunjucks/src/globals');
njglobals.someVar = 'someValue';
You can now use someVar
in your templates.
Be sure not to overwrite any of the existing properties of the njglobals
object, though (for [email protected]
, they are range
, cycler
and joiner
).
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