You can use the conditional section <<cs_ directive in a template to include or exclude a section of content. This is similar to using an "IF" statement.
If you use a conditional section within a numbered list, the numbering adjusts automatically.
This example in detail
This example uses a conditional section on its own, and also within a numbered list, and examples of conditional sections using expressions.
Conditional sections
These start with the <<cs_ condtional section directive and end with <<es_.
These are like IF statements. <<cs_sampleValue1>> is like saying:
IF sampleValue1= "true" THEN
display all text up to <<es_sampleValue1>>
The data contains "sampleValue1":"true" (JSON example).
If <<cs_ or <<es_ is on a line by itself the line is removed in the final document.
Used in a numbered list
The numbered list in the example has the second item surrounded by <<cs_ and <<es_.
The data contains: "sampleValue2":"false" (JSON example).
In the final document item 2 does not appear.
The numbering of the remaining items in the list adjusts automatically.
Note: it is important that the <<cs_ and <<es_ appear on lines by themselves and that they are not part of the list.
Using expressions in a conditional section
Any expression that return a true or false value can be used in a conditional sections.
Expressions allow you to perform multiple tests to determine if content should be added or removed. For a more detailed discussion on expressions please see the articles on Expressions - Logic and Expressions - Math.
Example 1 :
In the example template, the expression {sampleValue3=7} is evaluated and will return a value of either true or false. If "true" then all following text up to the next <<es_ appears in the final document.
The data contains "sampleValue3":"7" (JSON example), so in this case the text is displayed.
Example 2:
The expression {sampleValue4=’frog’} is evaluated and will return a true or false value. If "true" then all following text up to the next <<es_ appears in the final document.
The data contains "sampleValue4":"frog" (JSON example), so in this case the text is displayed.
Example 3:
The expression {sampleValue1||sampleValue2} is evaluated. If either sampleValue1 or sampleValue2 is "true" then all following text up to the next <<es_ appears in the final document.
The data contains "sampleValue1":"true" and "sampleValue2":"false"(JSON example), so in this case the text is displayed.
