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Issue with understanding how Owl template integrate in odoo 14

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javascriptdevelopmentowlodooV14
1 Odgovori
1608 Prikazi
Avatar
Daniel Palumbo

Hello,

I am fairly new to developing on odoo with owl. I am currently working on a project that use odoo 14 and owl 1.4


I am trying to implement a component that will render in a page renderer by the backend controller. I have this timeline.js file


odoo.define('my_module.My2ChildTimeline', ['web.ajax'], function (require) {
"use strict";

const { Component } = owl;
const { useState, onWillStart, onMounted } = owl.hooks;
const ajax = require("web.ajax");

/**
* ChildTimeline component for displaying a timeline of records related to a specific child.
*/
class ChildTimeline extends Component {

setup() {
...

onWillStart(async () => {
try {
console.info("Loading initial records for ChildTimeline"); // Debug
await this.loadMore();
} catch (error) {
console.error("Error loading initial records:", error);
this.state.loading = false;
}
});

onMounted(() => {
window.addEventListener('scroll', this.onScroll.bind(this));
});
}

onScroll() {
const nearBottom = window.innerHeight + window.scrollY >= document.body.offsetHeight - 100;
if (!this.state.loading && this.state.hasMoreRecords && nearBottom) {
this.loadMore();
}
}

async loadMore() {
this.state.loading = true;

const res = await ajax.jsonRpc(`/somewhere`, "call", {
offset: this.state.offset,
limit: this.state.limit,
});
console.info("Loaded more records:", res); // Debug

const tempDiv = document.createElement('div');
tempDiv.innerHTML = res.html;

const newItems = [...tempDiv.children];
const container = this.el.querySelector('.timeline-list');

if (container) {
newItems.forEach(el => container.appendChild(el));
}

this.state.offset += this.state.limit;
this.state.hasMoreRecords = res.has_more_records;
this.state.loading = false;
}
};

ChildTimeline.template = "my_module.My2ChildTimelineComponent";

// Mount immediately when DOM is ready
if (document.getElementById("timeline-root")) {
const dataScript = document.getElementById("timeline-data");
const props = JSON.parse(dataScript.textContent);

owl.mount(ChildTimeline, {
target: document.getElementById("timeline-root"),
props,
});
}

return ChildTimeline;
});

and an xml component

<templates xml:space="preserve">
<t t-name="my_module.My2ChildTimelineComponent" owl="1">
<div class="timeline-list">
<t t-foreach="state.records" t-as="record" t-key="record.id">
<div class="timeline-card d-flex">
<t t-if="record.model == 'sponsorship_gift'">
<My2ChildTimelineRecordGiftComponent record="record"/>
</t>
<t t-elif="record.model == 'correspondence'">
<My2ChildTimelineRecordCorrespondenceComponent record="record"/>
</t>
<t t-else="">
<div>This record type is not supported in the timeline.</div>
</t>
</div>
</t>

<t t-if="state.loading">
<div class="text-center py-2">Loading more...</div>
</t>
</div>
</t>
</templates>


The script will be called in a my2_child_timeline.xml page

...
<div class="mb-3">
<div id="timeline-root">
<script type="application/json" id="timeline-data">
<t t-raw="json.dumps({
'child_id': child.id,
'records': records,
'pageable': pageable,
})"/>
</script>
<script type="module" src="/my_module/static/src/components/timeline/My2ChildTimeline.js"></script>
</div>
</div>
...


The issue is that it does not find the My2ChildTimelineComponent and I cannot figure it out what is the issue. Is there somebody who could help me?



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Daniel Palumbo
Avtor

Thanks for sharing! It got better but I had to change a few things like 

odoo.__ready.then

does not exist in odoo 14. But I got over it and unfortunately the template is recognized but not used by the system. There is another underlying problem. After so many hours spend on it, I talked to my senior and we decided to go vanilla js for our use case and maybe later go back to owl as we will upgrade to odoo 17 probably

Thanks anyway!

Avatar
D Enterprise
Best Answer

Hii,


Here is updated code 


my_module/views/timeline_templates.xml


<odoo>

  <!-- Register the template -->

  <template id="My2ChildTimelineComponent">

    <t t-name="my_module.My2ChildTimelineComponent" owl="1">

      <div class="timeline-list">

        <t t-if="state.loading">

          <div class="text-center py-2">Loading more...</div>

        </t>

      </div>

    </t>

  </template>

</odoo>


Update __manifest__.py

Make sure this is included:


'qweb': [

    'views/timeline_templates.xml',

],


JavaScript Component


odoo.define('my_module.My2ChildTimeline', function (require) {

    "use strict";


    const { Component } = owl;

    const { useState, onWillStart, onMounted } = owl.hooks;

    const ajax = require("web.ajax");


    class ChildTimeline extends Component {

        setup() {

            this.state = useState({

                loading: false,

                offset: 0,

                limit: 10,

                hasMoreRecords: true,

            });


            onWillStart(() => this.loadMore());

            onMounted(() => window.addEventListener('scroll', this.onScroll.bind(this)));

        }


        async loadMore() {

            this.state.loading = true;

            const res = await ajax.jsonRpc(`/somewhere`, "call", {

                offset: this.state.offset,

                limit: this.state.limit,

            });


            const container = this.el.querySelector('.timeline-list');

            const tempDiv = document.createElement('div');

            tempDiv.innerHTML = res.html;

            [...tempDiv.children].forEach(el => container.appendChild(el));


            this.state.offset += this.state.limit;

            this.state.hasMoreRecords = res.has_more_records;

            this.state.loading = false;

        }


        onScroll() {

            const nearBottom = window.innerHeight + window.scrollY >= document.body.offsetHeight - 100;

            if (!this.state.loading && this.state.hasMoreRecords && nearBottom) {

                this.loadMore();

            }

        }

    }


    ChildTimeline.template = "my_module.My2ChildTimelineComponent";


    odoo.__ready.then(() => {

        const target = document.getElementById("timeline-root");

        const script = document.getElementById("timeline-data");


        if (target && script) {

            const props = JSON.parse(script.textContent);

            owl.mount(ChildTimeline, { target, props });

        }

    });


    return ChildTimeline;

});


In views/assets.xml:

<odoo>

  <template id="assets_frontend" inherit_id="web.assets_frontend" name="Timeline Assets">

    <xpath expr="." position="inside">

      <script type="module" src="/my_module/static/src/components/timeline/My2ChildTimeline.js"/>

    </xpath>

  </template>

</odoo>

And include assets.xml in __manifest__.py under data.


i hope it is use full

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