Win a copy of The Journey To Enterprise Agility this week in the Agile and Other Processes forum! And see the welcome thread for 20% off.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Jeanne Boyarsky
  • Liutauras Vilda
  • Campbell Ritchie
  • Tim Cooke
  • Bear Bibeault
Sheriffs:
  • Paul Clapham
  • Junilu Lacar
  • Knute Snortum
Saloon Keepers:
  • Ron McLeod
  • Ganesh Patekar
  • Tim Moores
  • Pete Letkeman
  • Stephan van Hulst
Bartenders:
  • Carey Brown
  • Tim Holloway
  • Joe Ess

evaluate EL inside EL  RSS feed

 
Ranch Hand
Posts: 36
Java jQuery Netbeans IDE
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I want to render something like this:

File 'asdf.txt' has an invalid file format.
but my code

renders it as:
File '${param.fileName}' has an invalid file format.

Does anyone know how can I get the container to evaluate the ${param.fileName} using EL but not the core if tags?
 
Author and ninkuma
Marshal
Posts: 66783
168
IntelliJ IDE Java jQuery Mac Mac OS X
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
you should not be using the ternary operator for this, but using the <c:if> tag. Why not use what's clearest and most appropriate? Embedding HTML inside strings is a poor practice, and ternary operator is intended as a simple expression switch, not as a replacement for a conditional statement.

And, no you cannot embed an EL expression inside another. The ${} delimiters enclose the entire EL expression and there is no need nor allowance for nesting them.

 
Bartender
Posts: 1844
10
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
As another suggestion seeing as we're using JSTL.
Pull the static string out into a resource bundle:

 
Bear Bibeault
Author and ninkuma
Marshal
Posts: 66783
168
IntelliJ IDE Java jQuery Mac Mac OS X
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Always a good suggestion!
 
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!