Filtering Resources and Update Failures

2 posts, 0 answers
  1. Alex
    Alex avatar
    17 posts
    Member since:
    Sep 2005

    Posted 04 Apr 2011 Link to this post

    OK, Here's is my situation.

    I have an application that is used to manage training events in different cities around the country.
    I have a page that has a radPanel on the left side of the page and a RadScheduler on the right.
    The RadPanel contains 8 checkboxes, each representing a city. When the user selects a checkbox, a postback is performed and if there are appointments scheduled for the selected city, they are displayed in the RadScheduler.  

    Each city has a number of instructors assigned to it. The instructors are setup as resources in a custom provider that Ive written. In order to pass the Selected_Training_City_ID as a parameter to the custom provider, Ive setup the custom provider to be instantiated on each page load. I filter the instructor resources based on the Selected_Training_City_ID so that only instructors from the selected city are shown on the Advanced Edit Form.

    This all works great....Now here's the problem. Each time a new city is selected, the page does a postback and reloads the Instructor resources based on which city checkbox is selected. Then, when a change is made to an appointment, but that isnt the currently selected city, the resource is not available and the update fails.

    For example, let say I do the following:

    1. select New york from the city checkboxs
    2. the page posts back and loads the instructors (Joe and Jim) for NY as Instructor resources into the provider.
    3. I double click the scheduler and create an appointment, I select Joe and Jim as the instructors, fill out the other details and save it.
    4. back on the main page, I now check the Chicago checkbox and un-check NY.
    5. the page posts back and loads the instructors (Mary and Jane) for Chicago as resources into the provider.
    6. Now I click and hold my NY appointment and move it, the Instructor resources (Joe and Jim from NY) aren't available since Chicago is currently checked and my update fails.

    Is there a recommended approach for handling a use case like this?
    Any help would be greatly appreciated.
    Thanks in advance.

  2. Peter
    Peter avatar
    6637 posts

    Posted 07 Apr 2011 Link to this post

    Hi Alex,

    I recommend you expose the city as a separate resource type. This way when you select a city from the panelbar, only appointments for this resource would show up. Here is a demo for reference -

    I suppose you have seen the help topic on Sending additional information to the provider, but here it is just in case.

    Best wishes,
    the Telerik team
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