Difference between revisions of "Show/Hide Header"

Revision as of 10:57, 25 September 2009

The visibility of Custom Fields can be controlled through values that are entered elsewhere on the page.

The concept is that one Custom Field - the "control field" - is used to control the display of a set of custom fields based on a value entered or selected in the control field.

The control field can be any Custom Field that contains a value:

• Custom Field Type: Text – Single Line
• Custom Field Type: Text – Multiple Lines
• Custom Field Type: Select One – Combo Box
• Custom Field Type: Select Many – Check Boxes (Note: see below)
• Custom Field Type: Special – Calculated Value
• Custom Field Type: Lookup – Entity and People
• Custom Field Type: Lookup – External Entity
• Custom Field Type: Lookup – External People

Syntax

Place the following code in the HTML Tag box of the Control field:

onchange="_showhideheader(xxxxxx,this.value=='Yes')"

• Check Boxes use a different syntax. See below)

Where:

• xxxxxx is the field ID of the Title Bar field that you wish to control.
• Yes is the value in the control field that you wish to use to trigger the display of Title Bar and the other Controlled fields in the block.

Examples:

• Display the controlled fields when the control field is not equal to Yes:

onchange="_showhideheader(123456,this.value!='Yes')"

• Multiple Conditions the control field is either Yes or Maybe:

onchange="_showhideheader(123456,(this.value=='Yes' || this.value=='Maybe'))"

• Display the controlled fields when the control field is empty:

onchange="_showhideheader(123456,this.value==")

• Display the controlled fields when the control field is numerical (greater than 6):

onchange="_showhideheader(123456, parseInt(this.value ) >6)"

Multiple Headers

Multiple headers can be hidden/shown simultaneously:

onchange="_showhideheader(xxxxxx,this.value='A') ;_showhideheader(yyyyyyy,this.value='B') "

This will display the controlled fields associated with Title Bar type field ID xxxxxx when the control field has value A and display controlled fields associated with Title Bar type field ID yyyyyyy when the control field has value B.

Check Boxes

When the Control field is a Select Many Check Box, you will need to use the onclick syntax.

onclick="_showhideheadercheckbox(xxxxxxx,this,'Yes;Cancel')"

• Use onclick instead of onchange
• Usethis instead of this.value
• 'Yes;Cancel' - values delimited by semi-colon

Notes

The difference between this feature and Dynamic Control Field is that:

• The set of fields that you wish to control can be located anywhere on the page. With Dynamic Control Fields the fields must be below the control field.
• Unlike the Dynamic Control Field, there are no fields "nested" within the control field.
• The fields hidden by one control can be used to as control fields themselves. Using nested Dynamic Control Fields (dynamic controls within dynamic controls) is not recommended, and you cannot report below the first level of nested fields.

See Also

Visibility of Custom Fields can also be controlled using:

• Role Field Permissions
• Status Field Permissions
• Visibility Condition