Polymer - cuba-service with params

Support
#1

Hello. Can you help me with sending params with ?

I have method:

@Override
public String someMethod(String s) {
return "Hello from middle part! " + s;
}

and realisation like this:

<cuba-entities view="some-browse-view" entity-name="erp$Entity" data="{{entity}}"></cuba-entities>
<cuba-entity view="some-browse-view" id="entityLoader" entity-name="erp$Entity" auto="false"
                     loading="{{entityLoading}}"></cuba-entity>
<table>
            <tr id="table-header">
                <th>My-info</th>
            </tr>
<template id="entityRepeater" is="dom-repeat" items="[[entity]]">

<tr>
                    <td>[[str]]</td>
</tr>

<cuba-service service-name="som_EntityService"
                              method="someMethod"
                              data="{{str}}"
                              handle-as="text"
                              params='{"s":"[[item.id]]"}'>
                </cuba-service>

      </template>
  </table>

I need to send uuid from all my entities like params, but have exception:

Uncaught (in promise) {message: "Failed to load data", errorData: {…}}
POST http://localhost:8080/som/rest/v2/services/som_EntityService/someMethod  500 ()

But if i send a request with static text like:

params=’{“s”:“some text”}’>

it`s works…

Can you halp me and show good example? thanks.

#2

Hi, you should avoid using such kind of binding. Instead you can compute the whole params object in depend on item id in the following way:

<cuba-service service-name="som_EntityService"
                              method="someMethod"
                              data="{{str}}"
                              handle-as="text"
                              params="[[_computeParams(item.id)]]">
</cuba-service>

...

class MyElement extends PolymerElement {
...
  _computeParams(itemId) {
    return {s:itemId};
  }
...
}
1 Like
#3

Thanks for help. This is a good solution to my problem!

#4

Have some problem: if i insert “cuba-service” in “dom-repeat” all my request is good but in
<td>[[str]]</td>
i see info from last request.

How i can insert received value from each request?

#5

Usually if you have some actions/logic in repeated stuff it’s better to move it (what is repeated) into a dedicated component.