I need to build a form which has a multiple select check box. [To be used at an event to be able to send content that is relevant in a follow up email] - is this possible.
To reduce confusion for later readers, there’s no such thing as a “multiple select checkbox.“
There’s a Checkbox field type.
- That’s one checkbox, intended to be mapped to a Boolean field in the database.
- It sets the Boolean to true or false.
- It may be required or not required.
- If not required but left unchecked, it sets the value to false (i.e. it always has the capacity to change the server value).
And there’s a Checkboxes field type.
- That’s one or more checkboxes, intended to be mapped to a String field.
- It allows zero or more boxes to be checked.
- If required, at least one box must be checked.
- If one box is checked, the server value is set to the value attribute of that checkbox.
- If more than one box is checked, the server value is set to the value attributes of all the checked boxes, concatenated in DOM order and separated by a semicolon (;).
- If not required and no boxes are checked, the current server value will not be changed.
So if you’re using a Checkboxes field, the server value in Marketo could look like “oranges;apples;pears”. (If you output the {{lead.token}} for that field, you’d see that whole string.) Therefore, if you want to know which boxes were checked, you have to use a Filter with the Contains operator. Note this type of Contains match can be prone to unexpected results, so I recommend enclosing each value in some special character like a square or curly brackets. In other words, store [oranges] instead of just oranges.
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