String[] type for Multivalued Properties - AEM

Let me check this with internal team.

~kautuk

I Don't know whether it is a defect or implementation but have observed the same.

Thanks,

Nupur

I would request you to please share your observation with daycare till i get response from internal team.

~kautuk

Hi Meenakshi

     For xtype like multifield, if you are saving only 1 value in property, it will get saved as String. This behavior is there from the beginning itself, (I have started from  5.4  )

Thanks

Veena

You need to set the typeHint in the dialog

typeHint="String"

This will save the value as a String[] regardless of 1 or multiple values.

Hi Meenakshi,

We have also face the same problem but we have one option here to ask AEM to save data in single array for all the fields present in multi field on the component or not. We can use the key property for cq:widget. If we did not set the key property we will not able to see the single array contains all the widgets inside multifieldpanel.

We have use this in AEM 6.1

Please find the below screenshot

Multifield is using the key to save the data in single array.

Thanks

From DAYCARE:

I'd like to provide you a quick summary of the resolution of this issue :

Problem : Multifield with one entry saves data in non array attribute

Root cause : Default behavior, but can be overridden using a typeHint

Solution : Used typeHint on multifield node with proper field name & type parameter syntax (fieldName@String[])

References:

Apache Sling :: Manipulating Content - The SlingPostServlet (servlets.post)

Extending Page Properties in AEM Sites

Sample Code from DayCare with relevant code in bold.

The key was understanding that the multifield needed the typeHint and it does not use the dot (.) symbol like the nested field does.

This quote is taken from the first article referenced above:

"If the @TypeHint value ends with [], it indicates a multi-value property. A multi-value property is usually auto-detected if there are multiple values for the property (i.e. request parameter). But if only a single value is present in the request, the desired property type needs to be explicitly defined as multi-value by stating @TypeHint=<type>[]."

So most examples showed the typeHint being used within an attribute such as name="width@TypeHint

but in this case, since we want to force it to an array even when there is only one element, the attribute typeHint needed to be used.

<?xml version="1.0" encoding="UTF-8"?>

<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:granite="http://www.adobe.com/jcr/granite/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0"

    jcr:primaryType="nt:unstructured">

    <content jcr:primaryType="nt:unstructured">

        <items jcr:primaryType="nt:unstructured">

            <tabs jcr:primaryType="nt:unstructured">

                <items jcr:primaryType="nt:unstructured">

                    <cug

                        jcr:primaryType="nt:unstructured"

                        jcr:title="CUG"

                        sling:orderBefore="advanced"

                        sling:resourceType="granite/ui/components/coral/foundation/fixedcolumns">

                        <items jcr:primaryType="nt:unstructured">

                            <column

                                jcr:primaryType="nt:unstructured"

                                sling:resourceType="granite/ui/components/coral/foundation/container">

                                <items jcr:primaryType="nt:unstructured">

                                    <cugPrincipals

                                        granite:class="foundation-layout-util-maximized-alt"

                                        jcr:primaryType="nt:unstructured"

                                        sling:resourceType="granite/ui/components/coral/foundation/form/multifield"

                                        fieldDescription="Click 'Add Field' to add a CUG Permission."

                                        fieldLabel="Access is restricted to the following groups:"

                                        required="{Boolean}true"

                                        typeHint="cq:cugPrincipals@String[]">

                                        <field

                                            jcr:primaryType="nt:unstructured"

                                            sling:resourceType="granite/ui/components/coral/foundation/form/textfield"

                                            name="./cq:cugPrincipals"/>

                                    </cugPrincipals>

                                </items>

                            </column>

                        </items>

                    </cug>

                </items>

            </tabs>

        </items>

    </content>

</jcr:root>