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set a list control component 'control' to read-only based on a security setting ...

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  • set a list control component 'control' to read-only based on a security setting ...

    Can this be done in, say, four relatively simple steps?

  • #2
    Re: set a list control component 'control' to read-only based on a security setting ...

    one way, from a non version 12 user:
    1>create two list controls displaying same information with one read only property another normal list control,
    2>blanket each control in containers
    3> show hide each container based on the security.

    there you go 3 simple steps.
    thanks for reading

    gandhi

    version 11 3381 - 4096
    mysql backend
    http://www.alphawebprogramming.blogspot.com
    [email protected]
    Skype:[email protected]
    1 914 924 5171

    Comment


    • #3
      Re: set a list control component 'control' to read-only based on a security setting ...

      Thanks Gandhi for your reply - yours is a simple and clever strategy for a normal UX component, but for a list component I can't see how to bind the duplicate text control to values in the list. Is it then possible to bind two controls on the UX to one value in the list control?

      Comment


      • #4
        Re: set a list control component 'control' to read-only based on a security setting ...

        can you not have list1 bound to some data and list2 bound to the same data. ux cannot complain.
        and to make look same you just have to change the label to be the same. so when you show hide the list does not look different to the user.
        Last edited by GGandhi; 01-14-2016, 02:42 PM.
        thanks for reading

        gandhi

        version 11 3381 - 4096
        mysql backend
        http://www.alphawebprogramming.blogspot.com
        [email protected]
        Skype:[email protected]
        1 914 924 5171

        Comment


        • #5
          Re: set a list control component 'control' to read-only based on a security setting ...

          Originally posted by Malcolm View Post
          Can this be done in, say, four relatively simple steps?
          Malcom,

          What is your use case? The List control is, essentially, read-only. Unless you're using a Detail View or some other method of changing it's data. It is a non-editable control when used as just a List. What is it you'd like to do?

          Comment


          • #6
            Re: set a list control component 'control' to read-only based on a security setting ...

            I have a component with two list controls each with a detail view, and another panel. One of the controls in the detail view I'd like to be read-only for users in one security group, but editable for users in another two groups. This control is bound to the 'AppraisersComment' SQL field - hence the users can't comment - but should see the field.

            I have tried arranging two text controls in the detail view, one read-only (using the checkbox in the control property) and one not - but I can't get them both bound to the same field. This applies with each control in a separate container as well. This situation would appear to be logical in normal circumstances (to prevent different data being pushed by two controls to a single field), but with one control 'read-only' I'd hoped it might be permissible. Unfortunately not.

            Gandhi's solution looked great, to duplicate the whole list control and detail view (with a number of headers/footers etc) and place each copy in a separate container with the component security set appropriately in each. However, my understanding is that I'd need a Panel Layout to enclose the two new containers (I can't have a container nested directly inside the Navigator). My experience is that Panel Layouts result in problems with the PanelSetActive function in the button that currently sets another panel as active from within the List detail.

            This is getting complicated, and I've tried to upload a grab from the new 'structure Explorer' to give an idea of the component, but it currently won't accept a JPG of 22kb! Hopefully I'll get it organised soon.
            Last edited by Malcolm; 01-15-2016, 04:00 AM.

            Comment


            • #7
              Re: set a list control component 'control' to read-only based on a security setting ...

              I'd prefer to keep things a bit simpler and not have to duplicate anything. What you want to do is essentially assign the AppraisersComment control a security role, or roles, that is valid. If a user logs in and belongs to that role then all is good. If a user logs in that is not part of that role then the control is read-only. This process follows a video Selwyn created about setting security on controls client-side. Have a look in the Release Notes for "Applying Security Client-Side". Here are the highlights.

              I've got this code in the Server-side onLogin event. It gets the User Roles and sends them through to the client in a namespace variable.

              Code:
              dim roles as c
              roles = Context.Security.GetUserRoles()
              
              dim js as c
              js = "{dialog.object}._roles = " + js_list_to_array(roles) + ";"
              
              e.javascript = js
              On the Detail View control you want to secure... in the Client Side Properties, Readonly Expression... we are calling a Javascript function named inRole which passes through the role we say is ok for editing this field. If more than one role is allowed, then it's just a common delimited list... e.g. 'Administrators,Participants'. If this function returns true the control is read-only... if it returns false the control is editable.

              Code:
              inRole('Administrators')
              The Javascript function is...

              Code:
              function inRole(roles){
              
              	var _userRoles = {dialog.object}._roles;
              	if(typeof _userRoles == 'undefined') return true;
              	
              	var _allowedRoles = roles.split(',');
              	
              	var flag = true;
              	for(var i = 0; i < _allowedRoles.length; i++){
              		if(_userRoles.indexOf(_allowedRoles[i]) > -1) {
              			flag = false;
              			break;
              		}
              	}
              	return flag;
              
              }
              Here we grab the namespace variable containing all the roles this user belongs to... and we've passed in the role or roles that we approve.

              We set a default return value of true because no matter what, we want to set this control read-only.

              We loop through the list of allowed roles matching against user roles. If we find a match then we return false... which means the control is open for edit.

              Comment


              • #8
                Re: set a list control component 'control' to read-only based on a security setting ...

                Thanks David, that looks a bit of a stretch for me at the moment, but you've given me a good start. Thanks again. Malcolm

                Comment


                • #9
                  Re: set a list control component 'control' to read-only based on a security setting ...

                  i still want to ask a question which is not clear to me, even though i do not use version 12.
                  if one creates a list1 without checking the checkbox, has detail view, then it will be just read only. the detail view never will show up.
                  and then creates another list2 using the same data but now check the has detail view checkbox and fill in all the necessary data - it will be now editable.
                  envelope each list in a container and make them show/hide based on the security
                  the person with read only will never see the detail part whether it is made editable or not, he has no business seeing it. and the person who can edit will see and be able to edit.
                  is that impression, i have, correct?
                  regardless one does not want to duplicate any control or not, it is their decision.
                  thanks for reading

                  gandhi

                  version 11 3381 - 4096
                  mysql backend
                  http://www.alphawebprogramming.blogspot.com
                  [email protected]
                  Skype:[email protected]
                  1 914 924 5171

                  Comment


                  • #10
                    Re: set a list control component 'control' to read-only based on a security setting ...

                    Gandhi,

                    there are other controls on the detail screen that users can edit, regardless of security. But you are right in saying that the list control itself is a readonly entity.

                    So, in the case above, you would be duplicating the list and detail views simply for the sake of making a single control read only.

                    Furthermore - though it is not mentioned above, these are dependent lists. So the first list is a parent list of the second list - so duplicating the lists becomes even more complex in this scenario.

                    Comment


                    • #11
                      Re: set a list control component 'control' to read-only based on a security setting ...

                      i understand the extent of the list control. in my opinion, it is only a read only grid with optional detail view in a new name to be used with dialog/ux.
                      the way i understood the question, which is open to correction by malcolm, is that he needed list read only or editable based on security in four single steps. no mention about lists based on lists, part of detail view being editable etc.,
                      so i am tuned in one direction. but thanks for explaining the capacity of lists as such. it is still fitting my impression what list is.
                      thanks for reading

                      gandhi

                      version 11 3381 - 4096
                      mysql backend
                      http://www.alphawebprogramming.blogspot.com
                      [email protected]
                      Skype:[email protected]
                      1 914 924 5171

                      Comment


                      • #12
                        Re: set a list control component 'control' to read-only based on a security setting ...

                        Your impression of lists is pretty accurate - although they have other features beyond what grids can do.

                        For instance, they have the ability to shrink and expand based on flex fields - so they are much better for mobile programming than grids.

                        But there is only one control that needs read only status -

                        One of the controls in the detail view I'd like to be read-only for users in one security group, but editable for users in another two groups. This control is bound to the 'AppraisersComment' SQL field - hence the users can't comment - but should see the field.

                        Comment


                        • #13
                          Re: set a list control component 'control' to read-only based on a security setting ...

                          One of the controls in the detail view I'd like to be read-only for users in one security group, but editable for users in another two groups. This control is bound to the 'AppraisersComment' SQL field - hence the users can't comment - but should see the field.
                          that was not in the first post,
                          if that's the case then it would be easy to have one list with detail view and that control alone in the detail view enabled/disabled based on security will all that is necessary, I would think.
                          no need for two lists, no need for javascript enabling detail view read only or editable. I would think.
                          thanks for reading

                          gandhi

                          version 11 3381 - 4096
                          mysql backend
                          http://www.alphawebprogramming.blogspot.com
                          [email protected]
                          Skype:[email protected]
                          1 914 924 5171

                          Comment


                          • #14
                            Re: set a list control component 'control' to read-only based on a security setting ...

                            Originally posted by GGandhi View Post
                            i still want to ask a question which is not clear to me, even though i do not use version 12.
                            if one creates a list1 without checking the checkbox, has detail view, then it will be just read only. the detail view never will show up.
                            and then creates another list2 using the same data but now check the has detail view checkbox and fill in all the necessary data - it will be now editable.
                            envelope each list in a container and make them show/hide based on the security
                            the person with read only will never see the detail part whether it is made editable or not, he has no business seeing it. and the person who can edit will see and be able to edit.
                            is that impression, i have, correct?
                            regardless one does not want to duplicate any control or not, it is their decision.
                            As I pointed out in post #5, the List control, without a Detail View is, essentially, read-only.

                            Malcolm asked for a read-only Detail View control... not show/hide. The security functionality at the control level of a UX is Server-side show/hide. The point is that Malcolm what's all users to see the control and only some to have edit rights. Show/hide will not accomplish this.

                            It may be the user's decision to duplicate a full List control... the user can implement whatever bad practices they want... and then they'd get to deal with an over-bloated component in which a single change to a List control means changes to 2 List controls.

                            I'd prefer to implement 19 lines of code to duplicating a List control and then having to live with a bad decision that didn't give me what I wanted in the first place.

                            Comment


                            • #15
                              Re: set a list control component 'control' to read-only based on a security setting ...

                              Originally posted by GGandhi View Post
                              that was not in the first post,
                              if that's the case then it would be easy to have one list with detail view and that control alone in the detail view enabled/disabled based on security will all that is necessary, I would think.
                              no need for two lists, no need for javascript enabling detail view read only or editable. I would think.
                              Could you post your solution for "enabled/disabled based on security"?

                              Comment

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