How to loop through array of structures in ColdFusion

Question

I have this array of structures setup:

<cfset table_columns = [
    {name="Right Name", var_name="right_name",  searchable="true", sortable="true"},
    {name="Right Type", var_name="right_type", searchable="true", sortable="true"},
    {name="Right Description", var_name="right_descr", searchable="true", sortable="true"},
    {name="Edit", var_name = "editcol", searchable="false", sortable="false"}
]>

How would I loop through that? Here is an example of what I need to do (which is obviously not working):

<cfloop array="#table_columns#" index="data_index">
    {"sName": "#table_columns[data_index]['name']#", "sTitle": "#table_columns[data_index]['var_name']#", "bsearchable": "#table_columns[data_index]['searchable']#", "bsortable": "#table_columns[data_index]['sortable']#"},
</cfloop>

Leigh · Accepted Answer · 2012-02-08 18:26:13Z

6

With an array loop, the index value is an element of the array, not a position. Meaning data_index is a structure. So you can output the keys as usual (with either structure or dot notation).

<cfloop array="#table_columns#" index="data_index">
    {"sName": "#data_index['name']#", "sTitle": "#data_index['var_name']#", "bsearchable": "#data_index['searchable']#", "bsortable": "#data_index['sortable']#"},
</cfloop>

answered Feb 8, 2012 at 18:26

Leigh

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2 Comments

Yoosaf Abdulla Over a year ago

I am getting the error: Element 'mykey' is undefined in a CFML structure referenced as part of an expression.

Leigh Over a year ago

@yoosafinpace - For new questions, you should open a separate thread. Be sure to include 1) a self-contained example and b) any error message(s).

RobG · Accepted Answer · 2012-02-08 18:25:47Z

1

<cfloop collection="#table_columns#" item="data_index">

This is an approximation taken from the CF docs:

http://help.adobe.com/en_US/ColdFusion/9.0/CFMLRef/WSc3ff6d0ea77859461172e0811cbec22c24-71a6.html

I've never had to do it, but hopefully that'll get you started.

answered Feb 8, 2012 at 18:25

RobG

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