Cannot populate fields, components, dynamic zones together in GET api

[milinpaul]

Bug report

Describe the bug

[v4]
I'm trying to setup strapi for our marketing website. I need to create a blog page with title, featureimage(Media) and contents (dynamic zones).
I need to fetch the all the fields including title, featureimage and dynamic zone contents.
But I tried all the possibilities for populating mention in this doc but everything is in vain.

Am I missing something ??

Expected behavior

The GET api should returns as follows:

"data": [
    {
      "id": 1,
      "attributes": {
        "title": "Test Article",
          // Media input
          "featuredimage": {
            "id": 1,
            "alt": "",
            "media": {
              "data": [
                {
                  "id": 1,
                  "attributes": {
                    "name": "17520.jpg",
                    "formats": {
                      // ...
                    },
                    // ...
                  }
                }
              ]
            },
          // Dynamic Zone
           "content": [
            {
              "id": 1,
              "__component": "blogpost.image"
            },
           {
             "id": 16,
             "__component": "blogpost.richtext",
             "value": "this is something fishy"
            }
          ]
      }
  ],
  "meta": {
    // ...
}

System

• Node.js version: v12
• NPM version:
• Strapi version: v4
• Database: Postgres (Docker)
• Operating system: OS X

[zeroseed]

I also face the same issue
my dynamic zone only showing __component object name , the content of it are hidden

while on v3 without any ?populate query string I can populate all the fields including dynamic zone
v4 is quite new and still need improvement in my opinion

[milinpaul]

@zeroseed Seems to be. If you need only to populate dynamic zone you can use GET /api/endpoint?populate[fieldName][populate]=*
For me, I need to list the media fields, components and dynamic zone together which I cannot figure out from populate params.

[STih07]

+1

[smoothdvd]

GET /api/endpoint?populate=*

[tomnovotny7]

We are using this function for now:

const { isEmpty, merge } = require("lodash/fp");

const getModelPopulationAttributes = (model) => {
  if (model.uid === "plugin::upload.file") {
    const { related, ...attributes } = model.attributes;
    return attributes;
  }

  return model.attributes;
};

const getFullPopulateObject = (modelUid, maxDepth = 20) => {
  if (maxDepth <= 1) {
    return true;
  }
  if (modelUid === "admin::user") {
    return undefined;
  }

  const populate = {};
  const model = strapi.getModel(modelUid);
  for (const [key, value] of Object.entries(
    getModelPopulationAttributes(model)
  )) {
    if (value) {
      if (value.type === "component") {
        populate[key] = getFullPopulateObject(value.component, maxDepth - 1);
      } else if (value.type === "dynamiczone") {
        const dynamicPopulate = value.components.reduce((prev, cur) => {
          const curPopulate = getFullPopulateObject(cur, maxDepth - 1);
          return curPopulate === true ? prev : merge(prev, curPopulate);
        }, {});
        populate[key] = isEmpty(dynamicPopulate) ? true : dynamicPopulate;
      } else if (value.type === "relation") {
        const relationPopulate = getFullPopulateObject(
          value.target,
          maxDepth - 1
        );
        if (relationPopulate) {
          populate[key] = relationPopulate;
        }
      } else if (value.type === "media") {
        populate[key] = true;
      }
    }
  }
  return isEmpty(populate) ? true : { populate };
};

Used for example like this:

const modelUid = "api::page.page";

module.exports = createCoreController(modelUid, ({ strapi }) => ({
  async find(ctx) {
    const { query } = ctx;

    const { results, meta } = await strapi.service(modelUid).find({
      ...getFullPopulateObject(modelUid),
      ...query,
    });

    const sanitizedEntities = await this.sanitizeOutput(results, ctx);

    return {
      data: sanitizedEntities,
      meta,
    };
  },
}));

[derrickmehaffy]

Let's keep the population topic in #11787

[derrickmehaffy]

This issue has been mentioned on Strapi Community Forum. There might be relevant details there:

https://forum.strapi.io/t/discussion-regarding-default-population-of-rest/13395/7

[derrickmehaffy]

This issue has been mentioned on Strapi Community Forum. There might be relevant details there:

https://forum.strapi.io/t/components-fields-not-showing-on-api-response/14103/2

[LarssonHenrik]

This might help: https://www.npmjs.com/package/strapi-plugin-populate-deep

[digitalextremist]

Many thanks to @LarssonHenrik. That did the trick. Now to limit the fields returned 😅

[brianwachira]

Many thanks to @LarssonHenrik , it works even in 2023