You have a common interceptor problem when using relationships. The net net
is that you need to modify your inteceptor stack so that near the top you
have an order like
....
params
prepare
params
That is the first part of the solution. The second part is you need to
implement Preparable on your action with the save() method. Finally you
need to include:
if(study != null){
study = (Study)studyDao.getObject(Study.class,study.getId())
//or something like that to load the study based on the id of the
current study object.
}
What this does is load all of the values from the database for the object
and then applies what ever values have been posted in your form to your
object.
What is happening is that your form only has values like study.name,
study.description, etc for the textfields that you fill out there. When you
post that to the server and your interceptors are just:
prepare
params
or just
params
You are telling the server to create a new study object and then apply all
the values from the posted form. There is no imageId field in the posted
form so that field is left null, the default value for a new study object.
The object gets saved and poof! your relationship is gone. A similar
scenario is when you have a very long object and you want to just edit a
subset of the fields for the object with a smaller form. If you don't load
the previous values before applying the updated values from the posted form
you will lose all the databse values. Another way to look at it is think
what would happen if you did not have a hidden study.id field on your form?
So:
params -> apply the web parameters initially to get the id
prepare -> use the id from above to load all the db values, including
relationship ids
params -> overwrite the db values with the updated values from the web
vacant_eyes wrote:
>
> I forgot to say the version. I am using appfuse 1.9.4 and Wwbwork. This
> is my save() method in StudyAction:
>
> public String save() throws Exception {
> if (cancel != null) {
> return "cancel";
> }
>
> if (delete != null) {
> return delete();
> }
>
> boolean isNew = (study.getId() == null);
>
> Date now = new Date();
> study.setModified(now);
> studyManager.saveStudy(study);
>
> String key = (isNew) ? "study.added" : "study.updated";
> saveMessage(getText(key));
>
> if (!isNew) {
> return INPUT;
> } else {
> return SUCCESS;
> }
> }
>
>
>
> Thanks again
>
>
> Adriel
>
> On Thu, 2007-06-28 at 12:35 +0100, Michael Horwitz wrote:
>> Which version of Appfuse are you using and with which web framework?
>>
>> Thanks
>>
>> Mike.
>>
>>
>> On 6/28/07, adriel manalansan <[EMAIL PROTECTED]> wrote:
>> Hello to everyone,
>>
>> I have 2 pojos, study and image. I did the relationship
>> between the 2
>> tables and it is successful. Here it goes, from
>> editStudy.html, i
>> uploaded an image(redirected to editImage.html) that uses
>> imageAction
>> and saved the imageId to my study then redirect to
>> editStudy.html again,
>> the imageId is saved to study table so I can say that saving
>> imageId to
>> my study is successful. the problem is when I click the save
>> button to
>> my editStudy that calls the method save(), the imageId was
>> deleted. I
>> dont know where is the problem so please help me about this...
>>
>> Thanks and God bless you.
>>
>> Adriel
>>
>>
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