Restricting data access
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    <br />Create Access Groups through the AccessGroups Editor in the Designer as shown below: Add the OCL Expression below in the View Enable Expression (Enable of ViewModel edit Controls)<syntaxhighlight>
    <br />Create Access Groups through the AccessGroups Editor in the Designer as shown below.
     
    Add this OCL Expression in the View Enable Expression (Enable of ViewModel edit Controls).<syntaxhighlight>
    Singleton.oclSingleton.AllowedAccess
    Singleton.oclSingleton.AllowedAccess
    </syntaxhighlight>To enable the AccessGroup on a ViewModel, click on the 3 dots extreme of AccessGroups label, this will load Access groups view. Select the access group to control the page:
    </syntaxhighlight>To enable the AccessGroup on a ViewModel, click on the 3 dots at the extreme end of the AccessGroups label. This will load the Access groups view. Select the access group to control the page:
    [[File:Documentation_Restricting_data_access_1729510330368.png|frameless|747x747px]]
    1️⃣[[File:Documentation_Restricting_data_access_1729510330368.png|frameless|747x747px]]
    [[File:Documentation Restricting data access 1729510710335.png|frameless|748x748px]]<br /><br />Run the application in the browser and select the different access groups. Observe the page response when the different access group to which the page is not attached responds as shown above.<br />[[Documentation:AccessGroups, InterestGroups and ViewModel-Enable|Interest Groups]]
     
    Note that interest groups are evaluated after access groups, it controls if we should bother to show the tagged action to the user or not. Interest groups only control the visibility of a tagged action. They are also used to declutter the left-side menu.


    [[Documentation:AccessGroups, InterestGroups and ViewModel-Enable|ViewModel-Enable]]<br />
    2️⃣[[File:Documentation Restricting data access 1729510710335.png|frameless|748x748px]]<br /><br />Run the application in the browser and select the different Access groups. Observe the page response when the different access group to which the page is not attached responds as shown above.<br />
    [[File:Documentation Restricting data access 1729512564921.png|thumb|300x300px|left]]<br />


    <br /><br /><br /><br /><br /><br /><br />See also:
    ==== [[Documentation:AccessGroups, InterestGroups and ViewModel-Enable|Interest Groups]] ====
    Note that interest groups are evaluated after access groups. Access groups control whether we can show the tagged action to the user or not. Interest groups only control the visibility of a tagged action. They are also used to declutter the left-side menu.


    [[Documentation:AccessGroups, InterestGroups and ViewModel-Enable|AccessGroups, InterestGroups, ViewModel-Enable]]
    ==== [[Documentation:AccessGroups, InterestGroups and ViewModel-Enable|ViewModel-Enable]] ====
    [[File:Documentation_Restricting_data_access_1729512564921.png|frameless|782x782px]]
    '''See also:'''


    [[Documentation:Access groups|Access Groups]]
    * [[Documentation:AccessGroups, InterestGroups and ViewModel-Enable|AccessGroups, InterestGroups, ViewModel-Enable]]
    * [[Documentation:Access groups|Access Groups]]

    Revision as of 05:00, 29 October 2024

    This page was created by Stephanie@mdriven.net on 2024-04-05. Last edited by Edgar on 2025-01-20.

    Restricting Data Access in MDriven can be achieved in 3 ways including the following ways.

    Below is a sample model, with a singleton class that has 2 attributes: Allowed Access and Interested as Booleans.

    Access Groups

    Documentation Restricting data access 1729507697380.png


    Create Access Groups through the AccessGroups Editor in the Designer as shown below.

    Add this OCL Expression in the View Enable Expression (Enable of ViewModel edit Controls).

    Singleton.oclSingleton.AllowedAccess

    To enable the AccessGroup on a ViewModel, click on the 3 dots at the extreme end of the AccessGroups label. This will load the Access groups view. Select the access group to control the page:

    1️⃣Documentation Restricting data access 1729510330368.png

    2️⃣Documentation Restricting data access 1729510710335.png

    Run the application in the browser and select the different Access groups. Observe the page response when the different access group to which the page is not attached responds as shown above.

    Interest Groups

    Note that interest groups are evaluated after access groups. Access groups control whether we can show the tagged action to the user or not. Interest groups only control the visibility of a tagged action. They are also used to declutter the left-side menu.

    ViewModel-Enable

    Documentation Restricting data access 1729512564921.png See also:

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