Version: 8.1

Set up the condition that locks the field on a page

Level: intermediate

note

This example is implemented in the front-end. Learn more about the back-end implementation: Access management (user documentation).

To implement the example:

Set up the page UI. Read more >>>
Set up the condition that locks the field. Read more >>>

Example

Set up the condition that locks the Applicant field on the custom request page. Lock the field if the request is completed, i. e., the Status field is set to "Completed."

1. Set up the page UI

Create an app based on the Records & business processes template. Instructions: Create an app manually (user documentation).

For this example, create a Requests app.
Open the form page in the Freedom UI Designer.

For this example, open the Requests form page.

Add a field.

For this example, add the following fields:

field that contains the applicant
field that contains the request status

To do this:

Add a field of needed type to the working area of the Freedom UI Designer.

Click and fill out the field properties.

Element	Element type	Property	Property value
Field that contains the applicant	Dropdown	Title	Applicant
		Code	UsrApplicant
		Lookup	Contact
Field that contains the request status	Dropdown	Title	Status
		Code	UsrStatus
		Lookup	Click and fill out the lookup properties: Set Title to "Request status." Set Code to "UsrRequestStatusLookup."

Save the changes.
Fill out the lookup.

For this example, fill out the Request status lookup.
1. Open the Lookups section. To do this, click in the top right → System setup → Lookups.
2. Open the Request status lookup.
3. Add the lookup values. Instructions: Manage lookup values (user documentation).
  
  For this example, add the following lookup values:
  - New
  - Under evaluation
  - In progress
  - Canceled
  - Completed

2. Set up the condition that locks the field

Configure the business logic in the Client Module Designer. For this example, set up the condition that locks the field.

Open the source code of the Freedom UI page. To do this, click .

Add an attribute.

Go to the viewModelConfigDiff schema section → values configuration object.
Add an IsApplicantReadonly attribute that stores data about the contact permission to edit the Applicant field.

viewModelConfigDiff schema section
viewModelConfigDiff: /**SCHEMA_VIEW_MODEL_CONFIG_DIFF*/[
    {
        "operation": "merge",
        "path": [
            "attributes"
        ],
        "values": {
            ...,
            /* The attribute that stores the contact permission to edit the "Applicant" field. */
            "IsApplicantReadonly": {}
        }
    },
    ...
]/**SCHEMA_VIEW_MODEL_CONFIG_DIFF*/,

Bind an attribute to the field.

Go to the viewConfigDiff schema section → UsrApplicant element.
Bind the IsApplicantReadonly attribute to the readonly property.

viewConfigDiff schema section
viewConfigDiff: /**SCHEMA_VIEW_CONFIG_DIFF*/[
    ...,
    /* Field that contains the applicant. */
    {
        "operation": "insert",
        "name": "UsrApplicant",
        "values": {
            ...,
            /* The property that locks the field from editing. Bound to the "IsApplicantReadonly" attribute. */
            "readonly": "$IsApplicantReadonly"
        },
        ...
    }
]/**SCHEMA_VIEW_CONFIG_DIFF*/,

Implement the base request handler.

Go to the handlers schema section.
Add a custom implementation of the crt.HandleViewModelAttributeChangeRequest base request handler.
1. Run the handler when the value of any attribute changes, including changes made after loading the attribute values from the data source.
2. Find the ID of the "Completed" value in the Request status lookup. For this example, the ID is "81ce50d9-03af-42f4-977d-d7fa3a8f151d."
3. Save the ID from the previous step to the completedStatusId constant.
4. Check the IsApplicantReadonly attribute value. If the new attribute value refers to the "Completed" request status, set the IsApplicantReadonly attribute value to true, otherwise set it to false. I. e., if the request is completed, the page locks the Applicant field. Otherwise, the page keeps the field editable for other request statuses.

handlers schema section
handlers: /**SCHEMA_HANDLERS*/[
    {
        request: "crt.HandleViewModelAttributeChangeRequest",
        /* The custom implementation of the system request handler. */
        handler: async (request, next) => {
            /* Check the request status. */
            if (request.attributeName === 'UsrStatus') {
                const completedStatusId = '81ce50d9-03af-42f4-977d-d7fa3a8f151d';
                const selectedStatus = await request.$context.UsrStatus;
                const selectedStatusId = selectedStatus?.value;
                const isRequestCompleted = selectedStatusId === completedStatusId;
                /* If the request status is "Completed", set the "IsApplicantReadonly" to "true." */
                request.$context.IsApplicantReadonly = isRequestCompleted;
            }
            /* Call the next handler if it exists and return its result. */
            return next?.handle(request);
        }
    }
]/**SCHEMA_HANDLERS*/,

Save the changes.

View the result

Open the Requests section.
Create a request that has an arbitrary name. For example, "Vacation."
Select an arbitrary applicant in the Applicant field. For example, "John Best."
Select "Completed" in the Status field.

As a result:

Creatio will lock the Applicant field for completed requests.
Creatio will keep the Applicant field editable for other request statuses, e. g., "New." View the result >>>

Source code

UsrRequests_FormPage
/* Declare the AMD module. */
define("UsrRequests_FormPage", /**SCHEMA_DEPS*/[]/**SCHEMA_DEPS*/, function/**SCHEMA_ARGS*/()/**SCHEMA_ARGS*/ {
    return {
        viewConfigDiff: /**SCHEMA_VIEW_CONFIG_DIFF*/[
            {
                "operation": "merge",
                "name": "Feed",
                "values": {
                    "dataSourceName": "PDS",
                    "entitySchemaName": "UsrRequests"
                }
            },
            {
                "operation": "merge",
                "name": "AttachmentList",
                "values": {
                    "columns": [
                        {
                            "id": "482ec12e-1a66-42c2-8555-97320be8218f",
                            "code": "AttachmentListDS_Name",
                            "caption": "#ResourceString(AttachmentListDS_Name)#",
                            "dataValueType": 28,
                            "width": 200
                        }
                    ]
                }
            },
            {
                "operation": "insert",
                "name": "UsrName",
                "values": {
                    "layoutConfig": {
                        "column": 1,
                        "row": 1,
                        "colSpan": 1,
                        "rowSpan": 1
                    },
                    "type": "crt.Input",
                    "label": "$Resources.Strings.UsrName",
                    "control": "$UsrName",
                    "labelPosition": "auto"
                },
                "parentName": "SideAreaProfileContainer",
                "propertyName": "items",
                "index": 0
            },
            /* Field that contains the applicant. */
            {
                "operation": "insert",
                "name": "UsrApplicant",
                "values": {
                    "layoutConfig": {
                        "column": 1,
                        "row": 2,
                        "colSpan": 1,
                        "rowSpan": 1
                    },
                    "type": "crt.ComboBox",
                    "label": "$Resources.Strings.UsrApplicant",
                    "labelPosition": "auto",
                    "control": "$UsrApplicant",
                    "listActions": [],
                    "showValueAsLink": true,
                    "controlActions": [],
                    /* The property that locks the field from editing. Bound to the "IsApplicantReadonly" attribute. */
                    "readonly": "$IsApplicantReadonly"
                },
                "parentName": "SideAreaProfileContainer",
                "propertyName": "items",
                "index": 1
            },
            {
                "operation": "insert",
                "name": "addRecord_9v1t0rt",
                "values": {
                    "code": "addRecord",
                    "type": "crt.ComboboxSearchTextAction",
                    "icon": "combobox-add-new",
                    "caption": "#ResourceString(addRecord_9v1t0rt_caption)#",
                    "clicked": {
                        "request": "crt.CreateRecordFromLookupRequest",
                        "params": {}
                    }
                },
                "parentName": "UsrApplicant",
                "propertyName": "listActions",
                "index": 0
            },
            /* Field that contains the request status. */
            {
                "operation": "insert",
                "name": "UsrStatus",
                "values": {
                    "layoutConfig": {
                        "column": 1,
                        "row": 3,
                        "colSpan": 1,
                        "rowSpan": 1
                    },
                    "type": "crt.ComboBox",
                    "label": "$Resources.Strings.UsrStatus",
                    "labelPosition": "auto",
                    "control": "$UsrStatus",
                    "listActions": [],
                    "showValueAsLink": true,
                    "controlActions": []
                },
                "parentName": "SideAreaProfileContainer",
                "propertyName": "items",
                "index": 2
            },
            {
                "operation": "insert",
                "name": "addRecord_o9dih24",
                "values": {
                    "code": "addRecord",
                    "type": "crt.ComboboxSearchTextAction",
                    "icon": "combobox-add-new",
                    "caption": "#ResourceString(addRecord_o9dih24_caption)#",
                    "clicked": {
                        "request": "crt.CreateRecordFromLookupRequest",
                        "params": {}
                    }
                },
                "parentName": "UsrStatus",
                "propertyName": "listActions",
                "index": 0
            }
        ]/**SCHEMA_VIEW_CONFIG_DIFF*/,
        viewModelConfigDiff: /**SCHEMA_VIEW_MODEL_CONFIG_DIFF*/[
            {
                "operation": "merge",
                "path": [
                    "attributes"
                ],
                "values": {
                    "UsrName": {
                        "modelConfig": {
                            "path": "PDS.UsrName"
                        }
                    },
                    "UsrApplicant": {
                        "modelConfig": {
                            "path": "PDS.UsrApplicant"
                        }
                    },
                    "UsrStatus": {
                        "modelConfig": {
                            "path": "PDS.UsrStatus"
                        }
                    },
                    /* The attribute that stores the contact permission to edit the "Applicant" field. */
                    "IsApplicantReadonly": {}
                }
            },
            {
                "operation": "merge",
                "path": [
                    "attributes",
                    "Id",
                    "modelConfig"
                ],
                "values": {
                    "path": "PDS.Id"
                }
            }
        ]/**SCHEMA_VIEW_MODEL_CONFIG_DIFF*/,
        modelConfigDiff: /**SCHEMA_MODEL_CONFIG_DIFF*/[
            {
                "operation": "merge",
                "path": [],
                "values": {
                    "primaryDataSourceName": "PDS"
                }
            },
            {
                "operation": "merge",
                "path": [
                    "dataSources"
                ],
                "values": {
                    "PDS": {
                        "type": "crt.EntityDataSource",
                        "config": {
                            "entitySchemaName": "UsrRequests"
                        },
                        "scope": "page"
                    }
                }
            }
        ]/**SCHEMA_MODEL_CONFIG_DIFF*/,
        handlers: /**SCHEMA_HANDLERS*/[
            {
                request: "crt.HandleViewModelAttributeChangeRequest",
                /* The custom implementation of the system request handler. */
                handler: async (request, next) => {
                    /* Check the request status. */
                    if (request.attributeName === 'UsrStatus') {
                        const completedStatusId = '81ce50d9-03af-42f4-977d-d7fa3a8f151d';
                        const selectedStatus = await request.$context.UsrStatus;
                        const selectedStatusId = selectedStatus?.value;
                        const isRequestCompleted = selectedStatusId === completedStatusId;
                        /* If the request status is "Completed", set the "IsApplicantReadonly" to "true." */
                        request.$context.IsApplicantReadonly = isRequestCompleted;
                    }
                    /* Call the next handler if it exists and return its result. */
                    return next?.handle(request);
                }
            }
        ]/**SCHEMA_HANDLERS*/,
        converters: /**SCHEMA_CONVERTERS*/{}/**SCHEMA_CONVERTERS*/,
        validators: /**SCHEMA_VALIDATORS*/{}/**SCHEMA_VALIDATORS*/
    };
});

Resources

Package with example implementation

1. Set up the page UI​

2. Set up the condition that locks the field​

View the result​

Source code​

Resources​

1. Set up the page UI

2. Set up the condition that locks the field

View the result

Source code

Resources