templatespug

Jade Templates - Dynamic Attributes

I want to create attributes on the fly for some html elements.

In my case I'd like to set (or not) a disabled attribute according to user.role.

So, if user has permission to edit some field, I do not want to put disabled attribute on the element. Otherwise, I do want it.

I know that I can do this with these approaches:

- Approach 1 - Use Conditionals

if (user.role === 1)
   input(type='text', name='foo')
else
   input(type='text', name='foo', disabled)

- Approach 2 - Plain HTML

- var disabledAttr = (user.role === 1) ? "disabled" : "";
| <input type="text" name="foo" #{ disabledAttr} />

Approach 1 is bad because I need to repeat some code. With Approach 2 I do not need to repeat code but I have to use plain HTML instead of Jade markup.

I tried something like this: 

input(type='text', name='foo', #{ disabledAttr} )

But jade generates the following code:

<input type="text" name="foo" disabledattr="" />

Any better idea?

Solution

  • Jade is quite clever when it needs to figure out how to render attributes. You can render your disabled attribute using this single line of jade markup

    input(type='text', name='foo', disabled=role!==1)