RE: Re: checkbox for nested collection
Thanks Laurie, It worked perfectly. Neil Meyer -Original Message- From: news [mailto:[EMAIL PROTECTED] On Behalf Of Laurie Harper Sent: 07 December 2005 12:30 AM To: user@struts.apache.org Subject: Re: checkbox for nested collection Neil Meyer wrote: > Good day, > > I read all the topics on checkboxes in this list but couldn't find a solution > for my problem. I hope there is somebody that can shed some light on this to > me. > > I have a dynamic list of menu items that is retrieved from a database into an > array property. > > I have to array properties one with all menu items available and one with the > user items allocated. > > When I render my JSP I need the array list of all items to display. See > example below: > > > > > > > > > > > What I need now is to pre check the relevant menu items from the array > specific to the user. > > Any help will be appreciated. You need to set the values in the menuItemsSelected form bean property to reflect the array specific to the user. I'm not too sure from your description what that means in practice, but the result you're looking for is for the menuItemsSelected property to contain only those values which should be checked. L. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Re: checkbox for nested collection
Thanks I will try that. Regards Neil Meyer -Original Message- From: news [mailto:[EMAIL PROTECTED] On Behalf Of Laurie Harper Sent: 07 December 2005 12:30 AM To: user@struts.apache.org Subject: Re: checkbox for nested collection Neil Meyer wrote: > Good day, > > I read all the topics on checkboxes in this list but couldn't find a solution > for my problem. I hope there is somebody that can shed some light on this to > me. > > I have a dynamic list of menu items that is retrieved from a database into an > array property. > > I have to array properties one with all menu items available and one with the > user items allocated. > > When I render my JSP I need the array list of all items to display. See > example below: > > > > > > > > > > > What I need now is to pre check the relevant menu items from the array > specific to the user. > > Any help will be appreciated. You need to set the values in the menuItemsSelected form bean property to reflect the array specific to the user. I'm not too sure from your description what that means in practice, but the result you're looking for is for the menuItemsSelected property to contain only those values which should be checked. L. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: checkbox for nested collection
Neil Meyer wrote: Good day, I read all the topics on checkboxes in this list but couldn't find a solution for my problem. I hope there is somebody that can shed some light on this to me. I have a dynamic list of menu items that is retrieved from a database into an array property. I have to array properties one with all menu items available and one with the user items allocated. When I render my JSP I need the array list of all items to display. See example below: What I need now is to pre check the relevant menu items from the array specific to the user. Any help will be appreciated. You need to set the values in the menuItemsSelected form bean property to reflect the array specific to the user. I'm not too sure from your description what that means in practice, but the result you're looking for is for the menuItemsSelected property to contain only those values which should be checked. L. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: checkbox for nested collection
Good day, I read all the topics on checkboxes in this list but couldn't find a solution for my problem. I hope there is somebody that can shed some light on this to me. I have a dynamic list of menu items that is retrieved from a database into an array property. I have to array properties one with all menu items available and one with the user items allocated. When I render my JSP I need the array list of all items to display. See example below: What I need now is to pre check the relevant menu items from the array specific to the user. Any help will be appreciated. Regards Neil Meyer -Original Message- From: Per Jørgen Walstrøm [mailto:[EMAIL PROTECTED] Sent: 02 December 2005 04:39 PM To: Struts Users Mailing List Subject: Re: checkbox for nested collection ok, I finally solved it. Here is what I did: 1) in my form's reset()-method, I iterate through all my sectionComponents and set restrictive=false 2) after the reset()-method is run, I do session.evict() on all my sectionComponents to remove them from the Hibernate-cache 3) I reload all the sectionComponents from the database and put them back into the form. When Struts renders my jsp later on, the checkboxes represents the values from the database, and not all falses as set in 1) when submitting the form, the reset()-method is then automatically run once more, setting all values to false. And when the form is populated, the correct values are being set to my sectionComponents took me some time to figure this one out, even though it seems quite easy :-) cheers, pj -Opprinnelig melding- Fra: Per Jørgen Walstrøm Sendt: 2. desember 2005 09:26 Til: Struts Users Mailing List Emne: SV: Re: SV: Re: checkbox for nested collection thank you for your answer. I think I know the request processing life-cycle, but what I apparently do not know, is how to map those checkboxes... The thing is that the "restrictive"-property is a direct mapping to the database; I do actually have a column called restrictive, which contains boolean values. So when I iterate over my collection geSectionComponents, what I really do is to lazily fetch the values from the database. I do not have an intermediate representation of those values in my form. So I do not know how to reset those values _without changing the actual values_. I am not sure how to go about to do this, but it seems to me that I might need some intermediate values in my form and that I have to set the sectionComponent.restrictive values manually, based on the intermediate values. It just seems like an unnecessary extra step... cheers, pj -Opprinnelig melding- Fra: Laurie Harper [mailto:[EMAIL PROTECTED] Sendt: 1. desember 2005 19:44 Til: user@struts.apache.org Emne: Re: SV: Re: checkbox for nested collection The trick is understanding the request processing life-cycle. The following is the sequence of events: - Struts either instantiates the action form or, if you use session scoped forms and one already exists, retrieves it from the session - Struts calls reset() on the form (I *think* in all cases, but it may only do this when retrieving a form from session scope) - if this request is a form submit, the form data is stored into the form bean - Struts calls your action, passing in the form bean - In your pre-populate action, you would set the boolean properties in the form ready for display; in your form processing action, you would read their state reflecting the request data - You return a forward mapping that Struts uses to render the next view So, you set everything to false in reset(); *after* that, your setup action gets the opportunity to set the properties as appropriate for display. On the next request, when the form is submitted, reset() is called which clears the boolean properties and then they're updated based on the form data. L. Per Jørgen Walstrøm wrote: > hello, > you are right, I do have access to the POJO and the properties and I am able to pre-populate the form. However, the checkboxes are rendered dynamically in the jsp from the getRestrictive() method of my GeSectionComponent. I can't really set them all to false beforehand, because then they would not be populated right, I guess... Don't know if I'm making myself clear, but I can't see how I can reset my checkboxes without resetting the actual properties. Should I try to use a multibox with an array of dynamic size (i.e. a size which depends on the size of the geSectionComponents-Collection)? > > /pj > > -Opprinnelig melding- > Fra: Laurie Harper [mailto:[EMAIL PROTECTED] > Sendt: 1. desember 2005 00:03 > Til: user@struts.apache.org > Emne: Re: checkbox for nested collection > > Per Jørgen Walstrøm wrote: >> hello, >> I have the following code in my jsp: >>
Re: SV: Re: SV: Re: checkbox for nested collection
Yes, it sounds like your problem is the lack of a place to store an intermediate representation. The usual approach is to have properties on your action form which you populate from the business object, and copy those properties back onto the business object when you're ready to commit them. BeanUtils.copyProperties() can be a way to do the copying very simply. L. Per Jørgen Walstrøm wrote: thank you for your answer. I think I know the request processing life-cycle, but what I apparently do not know, is how to map those checkboxes... The thing is that the "restrictive"-property is a direct mapping to the database; I do actually have a column called restrictive, which contains boolean values. So when I iterate over my collection geSectionComponents, what I really do is to lazily fetch the values from the database. I do not have an intermediate representation of those values in my form. So I do not know how to reset those values _without changing the actual values_. I am not sure how to go about to do this, but it seems to me that I might need some intermediate values in my form and that I have to set the sectionComponent.restrictive values manually, based on the intermediate values. It just seems like an unnecessary extra step... cheers, pj -Opprinnelig melding- Fra: Laurie Harper [mailto:[EMAIL PROTECTED] Sendt: 1. desember 2005 19:44 Til: user@struts.apache.org Emne: Re: SV: Re: checkbox for nested collection The trick is understanding the request processing life-cycle. The following is the sequence of events: - Struts either instantiates the action form or, if you use session scoped forms and one already exists, retrieves it from the session - Struts calls reset() on the form (I *think* in all cases, but it may only do this when retrieving a form from session scope) - if this request is a form submit, the form data is stored into the form bean - Struts calls your action, passing in the form bean - In your pre-populate action, you would set the boolean properties in the form ready for display; in your form processing action, you would read their state reflecting the request data - You return a forward mapping that Struts uses to render the next view So, you set everything to false in reset(); *after* that, your setup action gets the opportunity to set the properties as appropriate for display. On the next request, when the form is submitted, reset() is called which clears the boolean properties and then they're updated based on the form data. L. Per Jørgen Walstrøm wrote: hello, you are right, I do have access to the POJO and the properties and I am able to pre-populate the form. However, the checkboxes are rendered dynamically in the jsp from the getRestrictive() method of my GeSectionComponent. I can't really set them all to false beforehand, because then they would not be populated right, I guess... Don't know if I'm making myself clear, but I can't see how I can reset my checkboxes without resetting the actual properties. Should I try to use a multibox with an array of dynamic size (i.e. a size which depends on the size of the geSectionComponents-Collection)? /pj -Opprinnelig melding- Fra: Laurie Harper [mailto:[EMAIL PROTECTED] Sendt: 1. desember 2005 00:03 Til: user@struts.apache.org Emne: Re: checkbox for nested collection Per Jørgen Walstrøm wrote: hello, I have the following code in my jsp: my Collection geSectionComponents contains objects of type GeSectionComponent GeSectionComponent.java (an auto-generated Hibernate POJO), contains the following field (with getter and setter): private Boolean restrictive; How do I go about to make sure Struts detects when I uncheck a checkbox? I am aware of that I should set all corresponding boolean properties to false in the reset()-method, but in this case I do not have any direct access to those properties. any suggestions? What do you mean you don't have any direct access to those properties? You must be creating a reference to that object (or retrieving one through Hibernate) somewhere in your code. Assuming you're storing the POJO in your form bean as part of pre-population, you can then access it in your reset() method. L. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: checkbox for nested collection
ok, I finally solved it. Here is what I did: 1) in my form's reset()-method, I iterate through all my sectionComponents and set restrictive=false 2) after the reset()-method is run, I do session.evict() on all my sectionComponents to remove them from the Hibernate-cache 3) I reload all the sectionComponents from the database and put them back into the form. When Struts renders my jsp later on, the checkboxes represents the values from the database, and not all falses as set in 1) when submitting the form, the reset()-method is then automatically run once more, setting all values to false. And when the form is populated, the correct values are being set to my sectionComponents took me some time to figure this one out, even though it seems quite easy :-) cheers, pj -Opprinnelig melding- Fra: Per Jørgen Walstrøm Sendt: 2. desember 2005 09:26 Til: Struts Users Mailing List Emne: SV: Re: SV: Re: checkbox for nested collection thank you for your answer. I think I know the request processing life-cycle, but what I apparently do not know, is how to map those checkboxes... The thing is that the "restrictive"-property is a direct mapping to the database; I do actually have a column called restrictive, which contains boolean values. So when I iterate over my collection geSectionComponents, what I really do is to lazily fetch the values from the database. I do not have an intermediate representation of those values in my form. So I do not know how to reset those values _without changing the actual values_. I am not sure how to go about to do this, but it seems to me that I might need some intermediate values in my form and that I have to set the sectionComponent.restrictive values manually, based on the intermediate values. It just seems like an unnecessary extra step... cheers, pj -Opprinnelig melding- Fra: Laurie Harper [mailto:[EMAIL PROTECTED] Sendt: 1. desember 2005 19:44 Til: user@struts.apache.org Emne: Re: SV: Re: checkbox for nested collection The trick is understanding the request processing life-cycle. The following is the sequence of events: - Struts either instantiates the action form or, if you use session scoped forms and one already exists, retrieves it from the session - Struts calls reset() on the form (I *think* in all cases, but it may only do this when retrieving a form from session scope) - if this request is a form submit, the form data is stored into the form bean - Struts calls your action, passing in the form bean - In your pre-populate action, you would set the boolean properties in the form ready for display; in your form processing action, you would read their state reflecting the request data - You return a forward mapping that Struts uses to render the next view So, you set everything to false in reset(); *after* that, your setup action gets the opportunity to set the properties as appropriate for display. On the next request, when the form is submitted, reset() is called which clears the boolean properties and then they're updated based on the form data. L. Per Jørgen Walstrøm wrote: > hello, > you are right, I do have access to the POJO and the properties and I am able > to pre-populate the form. However, the checkboxes are rendered dynamically in > the jsp from the getRestrictive() method of my GeSectionComponent. I can't > really set them all to false beforehand, because then they would not be > populated right, I guess... Don't know if I'm making myself clear, but I > can't see how I can reset my checkboxes without resetting the actual > properties. Should I try to use a multibox with an array of dynamic size > (i.e. a size which depends on the size of the geSectionComponents-Collection)? > > /pj > > -Opprinnelig melding- > Fra: Laurie Harper [mailto:[EMAIL PROTECTED] > Sendt: 1. desember 2005 00:03 > Til: user@struts.apache.org > Emne: Re: checkbox for nested collection > > Per Jørgen Walstrøm wrote: >> hello, >> I have the following code in my jsp: >> >> >> >> >> my Collection geSectionComponents contains objects of type >> GeSectionComponent >> >> GeSectionComponent.java (an auto-generated Hibernate POJO), contains the >> following field (with getter and setter): >> private Boolean restrictive; >> >> How do I go about to make sure Struts detects when I uncheck a checkbox? I >> am aware of that I should set all corresponding boolean properties to false >> in the reset()-method, but in this case I do not have any direct access to >> those properties. >> >> any suggestions? > > What do you mean you don't have any direct access to those properties? > You must be creating a re
SV: Re: SV: Re: checkbox for nested collection
thank you for your answer. I think I know the request processing life-cycle, but what I apparently do not know, is how to map those checkboxes... The thing is that the "restrictive"-property is a direct mapping to the database; I do actually have a column called restrictive, which contains boolean values. So when I iterate over my collection geSectionComponents, what I really do is to lazily fetch the values from the database. I do not have an intermediate representation of those values in my form. So I do not know how to reset those values _without changing the actual values_. I am not sure how to go about to do this, but it seems to me that I might need some intermediate values in my form and that I have to set the sectionComponent.restrictive values manually, based on the intermediate values. It just seems like an unnecessary extra step... cheers, pj -Opprinnelig melding- Fra: Laurie Harper [mailto:[EMAIL PROTECTED] Sendt: 1. desember 2005 19:44 Til: user@struts.apache.org Emne: Re: SV: Re: checkbox for nested collection The trick is understanding the request processing life-cycle. The following is the sequence of events: - Struts either instantiates the action form or, if you use session scoped forms and one already exists, retrieves it from the session - Struts calls reset() on the form (I *think* in all cases, but it may only do this when retrieving a form from session scope) - if this request is a form submit, the form data is stored into the form bean - Struts calls your action, passing in the form bean - In your pre-populate action, you would set the boolean properties in the form ready for display; in your form processing action, you would read their state reflecting the request data - You return a forward mapping that Struts uses to render the next view So, you set everything to false in reset(); *after* that, your setup action gets the opportunity to set the properties as appropriate for display. On the next request, when the form is submitted, reset() is called which clears the boolean properties and then they're updated based on the form data. L. Per Jørgen Walstrøm wrote: > hello, > you are right, I do have access to the POJO and the properties and I am able > to pre-populate the form. However, the checkboxes are rendered dynamically in > the jsp from the getRestrictive() method of my GeSectionComponent. I can't > really set them all to false beforehand, because then they would not be > populated right, I guess... Don't know if I'm making myself clear, but I > can't see how I can reset my checkboxes without resetting the actual > properties. Should I try to use a multibox with an array of dynamic size > (i.e. a size which depends on the size of the geSectionComponents-Collection)? > > /pj > > -Opprinnelig melding- > Fra: Laurie Harper [mailto:[EMAIL PROTECTED] > Sendt: 1. desember 2005 00:03 > Til: user@struts.apache.org > Emne: Re: checkbox for nested collection > > Per Jørgen Walstrøm wrote: >> hello, >> I have the following code in my jsp: >> >> >> >> >> my Collection geSectionComponents contains objects of type >> GeSectionComponent >> >> GeSectionComponent.java (an auto-generated Hibernate POJO), contains the >> following field (with getter and setter): >> private Boolean restrictive; >> >> How do I go about to make sure Struts detects when I uncheck a checkbox? I >> am aware of that I should set all corresponding boolean properties to false >> in the reset()-method, but in this case I do not have any direct access to >> those properties. >> >> any suggestions? > > What do you mean you don't have any direct access to those properties? > You must be creating a reference to that object (or retrieving one through > Hibernate) somewhere in your code. Assuming you're storing the POJO in your > form bean as part of pre-population, you can then access it in your reset() > method. > > L. > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: SV: Re: checkbox for nested collection
The trick is understanding the request processing life-cycle. The following is the sequence of events: - Struts either instantiates the action form or, if you use session scoped forms and one already exists, retrieves it from the session - Struts calls reset() on the form (I *think* in all cases, but it may only do this when retrieving a form from session scope) - if this request is a form submit, the form data is stored into the form bean - Struts calls your action, passing in the form bean - In your pre-populate action, you would set the boolean properties in the form ready for display; in your form processing action, you would read their state reflecting the request data - You return a forward mapping that Struts uses to render the next view So, you set everything to false in reset(); *after* that, your setup action gets the opportunity to set the properties as appropriate for display. On the next request, when the form is submitted, reset() is called which clears the boolean properties and then they're updated based on the form data. L. Per Jørgen Walstrøm wrote: hello, you are right, I do have access to the POJO and the properties and I am able to pre-populate the form. However, the checkboxes are rendered dynamically in the jsp from the getRestrictive() method of my GeSectionComponent. I can't really set them all to false beforehand, because then they would not be populated right, I guess... Don't know if I'm making myself clear, but I can't see how I can reset my checkboxes without resetting the actual properties. Should I try to use a multibox with an array of dynamic size (i.e. a size which depends on the size of the geSectionComponents-Collection)? /pj -Opprinnelig melding- Fra: Laurie Harper [mailto:[EMAIL PROTECTED] Sendt: 1. desember 2005 00:03 Til: user@struts.apache.org Emne: Re: checkbox for nested collection Per Jørgen Walstrøm wrote: hello, I have the following code in my jsp: my Collection geSectionComponents contains objects of type GeSectionComponent GeSectionComponent.java (an auto-generated Hibernate POJO), contains the following field (with getter and setter): private Boolean restrictive; How do I go about to make sure Struts detects when I uncheck a checkbox? I am aware of that I should set all corresponding boolean properties to false in the reset()-method, but in this case I do not have any direct access to those properties. any suggestions? What do you mean you don't have any direct access to those properties? You must be creating a reference to that object (or retrieving one through Hibernate) somewhere in your code. Assuming you're storing the POJO in your form bean as part of pre-population, you can then access it in your reset() method. L. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
SV: Re: checkbox for nested collection
hello, you are right, I do have access to the POJO and the properties and I am able to pre-populate the form. However, the checkboxes are rendered dynamically in the jsp from the getRestrictive() method of my GeSectionComponent. I can't really set them all to false beforehand, because then they would not be populated right, I guess... Don't know if I'm making myself clear, but I can't see how I can reset my checkboxes without resetting the actual properties. Should I try to use a multibox with an array of dynamic size (i.e. a size which depends on the size of the geSectionComponents-Collection)? /pj -Opprinnelig melding- Fra: Laurie Harper [mailto:[EMAIL PROTECTED] Sendt: 1. desember 2005 00:03 Til: user@struts.apache.org Emne: Re: checkbox for nested collection Per Jørgen Walstrøm wrote: > hello, > I have the following code in my jsp: > > > > > my Collection geSectionComponents contains objects of type > GeSectionComponent > > GeSectionComponent.java (an auto-generated Hibernate POJO), contains the > following field (with getter and setter): > private Boolean restrictive; > > How do I go about to make sure Struts detects when I uncheck a checkbox? I am > aware of that I should set all corresponding boolean properties to false in > the reset()-method, but in this case I do not have any direct access to those > properties. > > any suggestions? What do you mean you don't have any direct access to those properties? You must be creating a reference to that object (or retrieving one through Hibernate) somewhere in your code. Assuming you're storing the POJO in your form bean as part of pre-population, you can then access it in your reset() method. L. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: checkbox for nested collection
Per Jørgen Walstrøm wrote: hello, I have the following code in my jsp: my Collection geSectionComponents contains objects of type GeSectionComponent GeSectionComponent.java (an auto-generated Hibernate POJO), contains the following field (with getter and setter): private Boolean restrictive; How do I go about to make sure Struts detects when I uncheck a checkbox? I am aware of that I should set all corresponding boolean properties to false in the reset()-method, but in this case I do not have any direct access to those properties. any suggestions? What do you mean you don't have any direct access to those properties? You must be creating a reference to that object (or retrieving one through Hibernate) somewhere in your code. Assuming you're storing the POJO in your form bean as part of pre-population, you can then access it in your reset() method. L. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: checkbox for nested collection
Per Jørgen Walstrøm on 30/11/05 17:09, wrote: hello, I have the following code in my jsp: my Collection geSectionComponents contains objects of type GeSectionComponent GeSectionComponent.java (an auto-generated Hibernate POJO), contains the following field (with getter and setter): private Boolean restrictive; How do I go about to make sure Struts detects when I uncheck a checkbox? I am aware of that I should set all corresponding boolean properties to false in the reset()-method, but in this case I do not have any direct access to those properties. Hmm. Interesting issue. The first thing to check is what happens to struts when you submit a non-boolean value to the nested property. It's always a good idea to code defensively, and if that causes an error when struts tries to map the http params into your nested bean, then you should change it to a string value. Most properties that are populated direct from the request parameters should be type string. But you said you can't change anything, which is bad. It sounds like a quiz question. I wouldn't implement it like this! You need to do further testing to see what happens when you feed in different values that could come from your checkboxes, and that may depend on which browser you are using. HTH Adam - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
checkbox for nested collection
hello, I have the following code in my jsp: my Collection geSectionComponents contains objects of type GeSectionComponent GeSectionComponent.java (an auto-generated Hibernate POJO), contains the following field (with getter and setter): private Boolean restrictive; How do I go about to make sure Struts detects when I uncheck a checkbox? I am aware of that I should set all corresponding boolean properties to false in the reset()-method, but in this case I do not have any direct access to those properties. any suggestions? cheers, pj - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
