What is macros in FreeMarker?
A macro is a template fragment with an associated name. You can use that named fragment on multiple places in your template, so it helps in repetitive tasks. A macro can have parameters that influence the output generated when you use the macro.
How do you create a list on FreeMarker?
FreeMarker doesn’t support modifying collections. But if you really want to do this in FreeMarker (as opposed to in Java), you can use sequence concatenation: <#assign myList = myList + [newItem]> . Here you create a new sequence that wraps the two other sequences.
What is eval in FreeMarker?
eval. This built-in evaluates a string as an FTL expression. eval returns the number 3. (To render a template that’s stored in a string, use the interpret built-in instead.)
How do you iterate in FTL?
In FTL we used <#list> to iterate and print its values.
What is FreeMarker template?
FreeMarker is a template engine, written in Java, and maintained by the Apache Foundation. We can use the FreeMarker Template Language, also known as FTL, to generate many text-based formats like web pages, email, or XML files.
How do you comment multiple lines in FTL?
FTL tags are a bit similar to HTML tags, but they are instructions to FreeMarker and will not be printed to the output. Comments: <#– and –> Comments are similar to HTML comments, but they are delimited by <#– and –>. Comments will be ignored by FreeMarker, and will not be written to the output.
How do you create an array in FreeMarker?
add is only meant to be used to initialize a sequence in Java. I meet a problem lately, x+[“green”] in <#list> for 3000 times bring a performance problem, but [“green”] + x fix this problem! Its about left-hand and right-hand. Btw @LaurentPireyn ‘s solution is another good way.
What is C in FreeMarker?
c (when used with numerical value) This built-in converts a number to string for a “computer language” as opposed to for human audience. That is, it formats with the rules that programming languages used to use, which is independent of all the locale and number format settings of FreeMarker.
What is hash in FreeMarker?
A sequence that contains all the lookup keys in the hash. Since hashes do not define an order for their sub variables in general, the order in which key names are returned can be arbitrary. However, some hashes maintain a meaningful order (ask the programmer if a certain hash does that or not).
What is FreeMarker tool?
Who uses FreeMarker?
Who uses Apache FreeMarker? 42 companies reportedly use Apache FreeMarker in their tech stacks, including CarGurus, Sodep, and Betfair.
How do you comment on FreeMarker?
Comments: <#– and –> Comments are similar to HTML comments, but they are delimited by <#– and –>. Comments will be ignored by FreeMarker, and will not be written to the output.
Can I include macros in FreeMarker?
However, if the macro definitions are inserted with include directive, they will not be available until FreeMarker has executed the include directive. Example: Macro without parameters: Example: Macro with parameters: Example: Macro with parameters and default parameter values: Example: A more complex macro.
Can you define FreeMarker templates?
FreeMarker Tutorial. This tutorial explains how can you define FreeMarker templates and how can you generate output based on these templates. It also demonstrates the usage of macros. 1. Introduction to FreeMarker FreeMarker is a Java-based template engine which can be used in stand-alone or servlet-based Java programs.
What is the use of the @macro variable?
Macro variable stores a template fragment (called macro definition body) that can be used as user-defined directive . The variable also stores the name of allowed parameters to the user-defined directive.
What is a freemarker nested directive?
Warning! Before FreeMarker 2.3.30, named catch-all parameters are unordered, that is, you don’t know what order will they be enumerated. Only starting from 2.3.30 are they returned in the same order as they were passed in. The nested directive executes the template fragment between the start-tag and end-tags of the user-defined directive.