I have this :
1. content: "<tr><td><input value='IyQ6WkYtQiFmcO4I8XVeaCkrYUw=:H4sIAAAAAAAAAK1QPUoDQRR+BlItNoIiaYIQRZtJNBsELSQIarEEIViHt5OXdWQyM85M/horz+E......" 2. inits: [{,…}] 1. 0: {,…} 1. linkSelectToZone: [{url:/livraison/nouvellelivraison.selectclients:change, selectId:selectClients_1fadb44aa044,…},…] 1. 0: {url:/livraison/nouvellelivraison.selectclients:change, selectId:selectClients_1fadb44aa044,…} 1. selectId: "selectClients_1fadb44aa044" 2. url: "/livraison/nouvellelivraison.selectclients:change" 3. zoneId: "formZone" 2. 1: {url:/livraison/nouvellelivraison.selectapplications:change, selectId:selectApplications_1fadb44aa044,…} 1. selectId: "selectApplications_1fadb44aa044" 2. url: "/livraison/nouvellelivraison.selectapplications:change" 3. zoneId: "formZone" 2. linkZone: [{linkId:deleteApplication_1fadb44aa044, url:/livraison/nouvellelivraison.deleteapplication/36,…},…] 1. 0: {linkId:deleteApplication_1fadb44aa044, url:/livraison/nouvellelivraison.deleteapplication/36,…} 1. linkId: "deleteApplication_1fadb44aa044" 2. url: "/livraison/nouvellelivraison.deleteapplication/36" 3. zoneId: "formZone" 2. 1: {linkId:deleteApplication_1fadb44aa044_0, url:/livraison/nouvellelivraison.deleteapplication/37,…} 1. linkId: "deleteApplication_1fadb44aa044_0" 2. url: "/livraison/nouvellelivraison.deleteapplication/37" 3. zoneId: "formZone" 3. observe: [{fieldIds:[selectClients], id:selectApplications_1fadb44aa044, event:change, zone:formZone,…}] 1. 0: {fieldIds:[selectClients], id:selectApplications_1fadb44aa044, event:change, zone:formZone,…} 1. event: "change" 2. fieldIds: [selectClients] 1. 0: "selectClients" 3. id: "selectApplications_1fadb44aa044" 4. url: "/livraison/nouvellelivraison.selectapplications:observe/observeSelectApp/$N/1" 5. zone: "formZone" 3. scripts: [/livraison/assets/1.0/ctx/javascript/observe.js] 1. 0: "/livraison/assets/1.0/ctx/javascript/observe.js" It seems the request got the values from the observe mixin : fieldIds, event, etc... About the id problem of select, in the code source of the page the id of the select is good, but here in the json request there is an id appended in suffix : 1. selectId: "selectClients_1fadb44aa044" Is that the problem of select clientId you are talking ? I don't see what you mean by a data attribute. PS : thanks for your help. 2014-09-22 18:37 GMT+02:00 Lance Java <lance.j...@googlemail.com>: > What happens when you view the network traffic in the chrome developer > tools? Can you see the values as request parameters? > > Are the select element ids (in the html) what you think they are? There's > an issue where the clientId is ignored by tapestry for select. And tapestry > adds a unique suffix to the end of the id. This has been fixed in recent > 5.4 builds but probably not on 5.3. > > You might need to add a data- attribute to the select element and bind to > that (using an appropriate selector) instead of the unpredictable id. >