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The Alpha Software Forum Participation Guidelines

The Alpha Software Forum is a free forum created for Alpha Software Developer Community to ask for help, exchange ideas, and share solutions. Alpha Software strives to create an environment where all members of the community can feel safe to participate. In order to ensure the Alpha Software Forum is a place where all feel welcome, forum participants are expected to behave as follows:
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Be sure all comments and threads you post are respectful. Posts that contain any of the following content will be considered a violation of your agreement as a member of the Alpha Software Forum Community and will be moderated:
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If a thread or post is found to contain any of the content outlined above, a moderator may choose to take one of the following actions:
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Community members are encouraged to click the "Report Post" icon in the lower left of a given post if they feel the post is in violation of the rules. This will alert the Moderators to take a look.

Alpha Software Corporation may amend the guidelines from time to time and may also vary the procedures it sets out where appropriate in a particular case. Your agreement to comply with the guidelines will be deemed agreement to any changes to it.



Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

When you do post
First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.

The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.

When explaining how to reproduce your problem, please be as detailed as possible. Describe every step, click-by-click and keypress-by-keypress. Otherwise when others try to duplicate your problem, they may do something slightly different and end up with different results.

A note about attachments
You may only attach one file to each message. Attachment file size is limited to 2MB. If you need to include several files, you may do so by zipping them into a single archive.

If you forgot to attach your files to your post, please do NOT create a new thread. Instead, reply to your original message and attach the file there.

When attaching screen shots, it is best to attach an image file (.BMP, .JPG, .GIF, .PNG, etc.) or a zip file of several images, as opposed to a Word document containing the screen shots. Because Word documents are prone to viruses, many message board users will not open your Word file, therefore limiting their ability to help you.

Similarly, if you are uploading a zipped archive, you should simply create a .ZIP file and not a self-extracting .EXE as many users will not run your EXE file.
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Linked Lists

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    Linked Lists

    Hi,

    I have 4 lists in a parent/children relationship. Lets call them List1, List2, List3 and List4.

    List3 is a child of List2 and List2 is a child of List1. List4 is a child of List1, but is also linked to List2 and List3.

    Data for List1 is loaded when online to the server. Lists 2, 3 and 4 are pre-loaded. New records can be created on the fly for List2, List3 and List4. Whenever a new record is created for Lists 2, 3 and 4, the linking fields are setup manually with javascript.

    This works fine when online. However, this app has offline capability, so it needs to work offline. I can create new records when offline for List2, List3 and List4, however the linking fields are not set as the ids for the new records are not assigned. (the id fields are auto generated in the db). When the app comes back online, I have a 'Sync' button which does a saveListEdits to save all the records back to the db that were added during the offline period. However, the linking fields do not get configured during the sync.

    So I can do this manually by 1) saving List2, then 2) copying the id to List3, 3)saving List3, then 4)copying the ids from List2 and List3 to List 4 and then 5) saving List4. I would need to either introduce relevant delays between each step, or work out how to ensure the record has been saved and the id is available.

    I thought there might be a more "automatic" way of doing this. I tried setting up the lookup fields in the list properties but that didn't seem to do it. So is there a way to do this via configuration, or is the only option to do it programmatically ?

    Cheers,
    Greg

    #2
    Re: Linked Lists

    OK, so worked out how to do this. I ended up making List4 a child of List3. This setup the linkage between List4 and List3. To get the link between List4 and List2 I setup a 'Before Insert' trigger in the db (on List4) which did a lookup to List3 to get the link to List2 and then SET it into the link field of List4.

    Greg

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