KB-1458 HTTP 500 error thrown on forms when trying to add validationGroup

Parmida Borhani — Mon, 18 May 2020 22:08:24 GMT

Current Revision posted to Appian Knowledge Base by Parmida Borhani on 5/18/2020 10:08:24 PM

Symptoms

Appian throws an HTTP 500 error when the user attempts to add a validationGroup property to the a!buttonWidgetSubmit. However, this appears to only happen when the property is added before the saveInto property, and beneath the label property.

More specifically, the user will see this error if validationGroup is added before saveInto without adding an ending comma. Appian throws the following HTTP 500 error:

An example of the code that might throw this error is the following:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {},
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            validationGroup: "test",
            saveInto: {
              a!save(local!button, 1)
            }
          )
        }
      )
    }
  )
)

This error is only thrown when validationGroup is being typed out in the position in between label and saveInto. If one copies and pastes this code into an Interface Designer, for example, the error will not be reproduced.

Cause

The set up passes a list of 'Expression Tree' to validationGroup, which is not being converted to a string correctly and throws this error during a JSON conversion.

Action

Add the validationGroup property after saveInto. This can be achieved in the following way:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {},
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            saveInto: {
              a!save(local!button, 1),
              validationGroup: "test"
            }
          )
        }
      )
    }
  )
)

Here, validationGroup is placed after saveInto, and so this error will not show up.

Affected Versions

This article applies to Appian 17.2 and later.

Last Reviewed: January 2018

Tags: Interface, SAIL, application design

KB-1458 HTTP 500 Error Thrown on Forms When Trying to Add validationGroup

Parmida Borhani — Mon, 23 Jul 2018 03:34:41 GMT

Revision 6 posted to Appian Knowledge Base by Parmida Borhani on 7/23/2018 3:34:41 AM

Symptoms

More specifically, the user will see this error if validationGroup is added before saveInto without adding an ending comma. Appian throws the following HTTP 500 error:

An example of the code that might throw this error is the following:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {},
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            validationGroup: "test",
            saveInto: {
              a!save(local!button, 1)
            }
          )
        }
      )
    }
  )
)

Cause

The set up passes a list of 'Expression Tree' to validationGroup, which is not being converted to a string correctly and throws this error during a JSON conversion.

Action

Add the validationGroup property after saveInto. This can be achieved in the following way:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {},
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            saveInto: {
              a!save(local!button, 1),
              validationGroup: "test"
            }
          )
        }
      )
    }
  )
)

Here, validationGroup is placed after saveInto, and so this error will not show up.

Affected Versions

This article applies to Appian 17.2 and later.

Last Reviewed: January 2018

Tags: Interface, SAIL, application design

KB-1458 HTTP 500 Error Thrown on Forms When Trying to Add validationGroup

Nick Vigilante — Wed, 17 Jan 2018 15:52:19 GMT

Revision 5 posted to Appian Knowledge Base by Nick Vigilante on 1/17/2018 3:52:19 PM

Symptoms

More specifically, the user will see this error if validationGroup is added before saveInto without adding an ending comma. Appian throws the following HTTP 500 error:

An example of the code that might throw this error is the following:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {},
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            validationGroup: "test",
            saveInto: {
              a!save(local!button, 1)
            }
          )
        }
      )
    }
  )
)

Cause

The set up passes a list of 'Expression Tree' to validationGroup, which is not being converted to a string correctly and throws this error during a JSON conversion.

Action

Add the validationGroup property after saveInto. This can be achieved in the following way:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {},
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            saveInto: {
              a!save(local!button, 1),
              validationGroup: "test"
            }
          )
        }
      )
    }
  )
)

Here, validationGroup is placed after saveInto, and so this error will not show up.

Affected Versions

This article applies to Appian 17.2 and later.

Last Reviewed: January 2018

Tags: Interface, SAIL

KB-1458 HTTP 500 Error Thrown on Forms When Trying to Add validationGroup

Nick Vigilante — Wed, 17 Jan 2018 10:52:19 GMT

Revision 4 posted to Appian Knowledge Base by Nick Vigilante on 1/17/2018 10:52:19 AM

Symptoms

More specifically, the user will see this error if validationGroup is added before saveInto without adding an ending comma. Appian throws the following HTTP 500 error:

An example of the code that might throw this error is the following:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {},
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            validationGroup: "test",
            saveInto: {
              a!save(local!button, 1)
            }
          )
        }
      )
    }
  )
)

Cause

The set up passes a list of 'Expression Tree' to validationGroup, which is not being converted to a string correctly and throws this error during a JSON conversion.

Action

Add the validationGroup property after saveInto. This can be achieved in the following way:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {},
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            saveInto: {
              a!save(local!button, 1),
              validationGroup: "test"
            }
          )
        }
      )
    }
  )
)

Here, validationGroup is placed after saveInto, and so this error will not show up.

Affected Versions

This article applies to Appian 17.2 and later.

Last Reviewed: January 2018

Tags: Interface, SAIL

DRAFT KB-XXXX HTTP 500 Error Thrown on Forms When Trying to Add validationGroup

Camila Uechi — Wed, 17 Jan 2018 10:49:12 GMT

Revision 3 posted to Appian Knowledge Base by Camila Uechi on 1/17/2018 10:49:12 AM

Symptoms

More specifically, the user will see this error if validationGroup is added before saveInto without adding an ending comma. Appian throws the following HTTP 500 error:

An example of the code that might throw this error is the following:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {
      
    },
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            validationGroup: "test",
            saveInto: {
              a!save(local!button, 1)
            }
          )
        }
      )
    }
  )
)

Cause

The set up passes a list of 'Expression Tree' to validationGroup, which is not being converted to a string correctly and throws this error during a JSON conversion.

Action

Add the validationGroup property after saveInto. This can be achieved in the following way:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {
      
    },
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            saveInto: {
              a!save(local!button, 1),
              validationGroup: "test"
            }
          )
        }
      )
    }
  )
)

Here, validationGroup is placed after saveInto, and so this error will not show up.

Affected Versions

This article applies to Appian 17.2 and later versions.

Last Reviewed: January 2018

Tags: Interface, SAIL

DRAFT KB-XXXX HTTP 500 Error Thrown on Forms When Trying to Add validationGroup

Camila Uechi — Wed, 17 Jan 2018 10:48:41 GMT

Revision 2 posted to Appian Knowledge Base by Camila Uechi on 1/17/2018 10:48:41 AM

Symptoms

More specifically, the user will see this error if validationGroup is added before saveInto without adding an ending comma. Appian throws the following HTTP 500 error:

An example of the code that might throw this error is the following:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {
      
    },
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            validationGroup: "test",
            saveInto: {
              a!save(local!button, 1)
            }
          )
        }
      )
    }
  )
)

Cause

The set up passes a list of 'Expression Tree' to validationGroup, which is not being converted to a string correctly and throws this error during a JSON conversion.

Action

Add the validationGroup property after saveInto. This can be achieved in the following way:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {
      
    },
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            saveInto: {
              a!save(local!button, 1),
              validationGroup: "test"
            }
          )
        }
      )
    }
  )
)

Here, validationGroup is placed after saveInto, and so this error will not show up.

Affected Versions

This article applies to Appian 17.2 and later versions.

Last Reviewed: January 2018

Tags: Interface, SAIL

DRAFT KB-XXXX HTTP 500 Error Thrown on Forms When Trying to Add validationGroup

Camila Uechi — Mon, 15 Jan 2018 22:30:24 GMT

Revision 1 posted to Appian Knowledge Base by Camila Uechi on 1/15/2018 10:30:24 PM

Symptoms

Appian throws an HTTP 500 error when the user attempts to add a validationGroup property to the a!buttonWidgetSubmit. However, this appears to only happen when the property is added before the saveInto property, and beneath the label property.

More specifically, the user will see this error if 'validationGroup' is added before 'saveInto' without adding an ending comma. Appian throws the following HTTP 500 error:

An example of the code that might throw this error is the following:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {
      
    },
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            validationGroup: "test",
            saveInto: {
              a!save(local!button, 1)
            }
          )
        }
      )
    }
  )
)

This error is only thrown when "validationGroup" is being typed out in the position in between 'label' and 'saveInto'. If one copies and pastes this code into an Interface Designer, for example, the error will not be reproduced.

Cause

Action

A workaround to this issue is to add the 'validationGroup' property after 'saveInto'. This can be achieved such as the following code:

load(
  local!button,
  a!formLayout(
    label: "Label",
    contents: {
      
    },
    buttons: {
      a!buttonLayout(
        primaryButtons:  {
          a!buttonWidgetSubmit(
            label: "Submit",
            saveInto: {
              a!save(local!button, 1),
              validationGroup: "test"
            }
          )
        }
      )
    }
  )
)

If 'validationGroup' is placed after 'saveInto' this error will not show up.

Affected Versions

Appian 17.2 and above.

Tags: Interface, SAIL