If

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What is If?¶

A logical conditional snippet that allows for conditionals in MODX.

History¶

If was written by Jason Coward (opengeek) and Shaun McCormick (splittingred) and first released on Oct 29th, 2009.

Download¶

It can be downloaded from within the MODX Revolution manager via Package Management, or from the MODX Extras Repository, here: https://modx.com/extras/package/if

Development and Bug Reporting¶

If is stored and developed in GitHub, and can be found here:http://github.com/splittingred/If

Bugs can be filed here: http://github.com/splittingred/If/issues

Usage¶

The If snippet can be called using the tags:

[[If]]

or, in case your subject can be modified before the resource cache get cleared use the uncached syntax:

[[!If]]

Available Properties¶

Name	Description	Default Value
subject	The value to perform the conditional on.
operator	The operator to compare the subject against.	=
operand	If needed, the value to compare the subject against using the operator.
then	If the condition is true, output this.
else	If the condition is false, output this.
debug	If true, print out all the passed properties.	0
die	If debug and this is true, die() after printing the properties.	0

Available Operators¶

Operator	Description
!=,neq,not,isnot,isnt,unequal,notequal	Passes if the subject is unequal to the operand.
==,=,eq,is,equal,equals,equalto	Passes if the subject is equal to the operand.
<,lt,less,lessthan	Passes if the subject is less than the operand.
>,gt,greater,greaterthan	Passes if the subject is greater than the operand.
<=,lte,lessthanequals,lessthanorequalto	Passes if the subject is less than or equal to the operand.
>=,gte,greaterthanequals,greaterthanequalto	Passes if the subject is greater than or equal to the operand.
isempty,empty	Passes if the subject is empty.
!empty,notempty,isnotempty	Passes if the subject is not empty.
isnull,null	Passes if the subject is null.
inarray,in_array,ia	Passes if the subject is found in the operand list. (comma-delimited string)

Examples¶

Numeric comparison:

[[!If? &subject=`[[+total]]` &operator=`GT` &operand=`3` &then=`You have more than 3 items!`]]

String comparison:

[[!If?
   &subject=`[[+name]]`
   &operator=`EQ`
   &operand=`George`
   &then=`Hey George! Long time no see!`
   &else=`You're not George. Go away.`
]]

Inline snippet calls:

[[!If?
   &subject=`[[+modx.user.id]]`
   &operator=`EQ`
   &operand=`0`
   &then=`[[Login]]`
   &else=`[[Logout]]`
]]

When using the If snippet for checking a resource field or template variable (or other value that doesn't change before the cache does), be sure to use the cached snippet call to check the condition to make sure it doesn't need to process on every request.

[[If?
   &subject=`[[*hidemenu]]`
   &operator=`EQ`
   &operand=`1`
   &then=`This resource is not visible in the menu.`
   &else=`This resource shows up in the menu in spot [[*menuindex]].`
]]

Example with in_array:

[[If?
   &subject=`[[*id]]`
   &operator=`inarray`
   &operand=`3,4`
   &then=`This text will show if id is 3 or 4.`
   &else=`This text is printed for all other resource id's.`
]]