cloudbase-document-database-in-wechat-miniprogram
Use CloudBase document database WeChat MiniProgram SDK to query, create, update, and delete data. Supports complex queries, pagination, aggregation, and geolocation queries.
Install
Use with your agent
Install the cloudbase-document-database-in-wechat-miniprogram skill, then use it as build context. Run: npx skills add https://github.com/tencentcloudbase/skills --skill cloudbase-document-database-in-wechat-miniprogram. Then read the installed skill.md and follow its guidance to build or refactor my project.
Standalone Install Note
If this environment only installed the current skill, start from the CloudBase main entry and use the published cloudbase/references/... paths for sibling skills.
- CloudBase main entry:
https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/SKILL.md - Current skill raw source:
https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/no-sql-wx-mp-sdk/SKILL.md
Keep local references/... paths for files that ship with the current skill directory. When this file points to a sibling skill such as auth-tool or web-development, use the standalone fallback URL shown next to that reference.
CloudBase Document Database WeChat Mini Program SDK
Activation Contract
Use this first when
- A WeChat Mini Program must access CloudBase document database through
wx.cloud.database(). - The request mentions Mini Program collection CRUD, pagination, aggregation, or geolocation queries.
Read before writing code if
- The task is Mini Program database work but you still need to separate it from Web SDK, cloud functions, or SQL tasks.
- The request depends on built-in user identity,
_openid, or Mini Program-side permissions.
Then also read
- Mini Program project rules and CloudBase integration ->
../miniprogram-development/SKILL.md(standalone fallback:https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/miniprogram-development/SKILL.md) - Mini Program auth and identity flow ->
../auth-wechat/SKILL.md(standalone fallback:https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/auth-wechat/SKILL.md) - Browser-side document database code ->
../no-sql-web-sdk/SKILL.md(standalone fallback:https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/no-sql-web-sdk/SKILL.md)
Do NOT use for
- Browser/Web code using
@cloudbase/js-sdk. - Server-side or cloud-function database access.
- MySQL / relational database work.
Common mistakes / gotchas
- Copying Web SDK code into Mini Program pages.
- Manually writing
_openidduring create or update operations. - Assuming built-in Mini Program identity means security rules can be ignored.
- Mixing collection CRUD and backend-wide admin workflows in the same client path.
Minimal checklist
- Confirm the caller is a Mini Program page/component or Mini Program-side logic.
- Initialize
wx.cloudcorrectly before database calls. - Verify whether the collection rules rely on
auth.openid/_openid. - Read the specific companion reference file for the operation you need.
Overview
This skill covers Mini Program-side document database access through wx.cloud.database().
Use it for:
- collection CRUD in Mini Program pages
- query composition and pagination
- aggregation
- geolocation queries
Mini Program CloudBase access comes with built-in identity, but database operations are still constrained by collection permissions and security rules.
Canonical initialization
const db = wx.cloud.database();
const _ = db.command;
To target a specific environment:
const db = wx.cloud.database({
env: "test"
});
Important notes:
- Users are authenticated through the Mini Program CloudBase context.
- In cloud functions, caller identity is available through
wxContext.OPENID. - In client-side collection rules, ownership checks usually use
auth.openid/doc._openid.
Quick routing
- CRUD ->
./crud-operations.md - Complex queries ->
./complex-queries.md - Pagination ->
./pagination.md - Aggregation ->
./aggregation.md - Geolocation ->
./geolocation.md - Security rules ->
./security-rules.md
Working rules for a coding agent
-
Keep Mini Program code Mini Program-native
- Use
wx.cloud.database(). - Do not substitute browser SDK initialization patterns.
- Use
-
Respect ownership fields
_openidis system-managed for SDK writes.- Never set or override
_openidmanually in.add(),.set(), or.update()payloads.
-
Remember that security rules validate requests
- If a rule requires ownership conditions, the query shape must match that rule model.
- Permission errors usually mean the rule/query relationship is wrong, not only that the user is logged out.
-
Route admin-style operations to backend flows
- If the task needs privileged global access, use backend tools or functions instead of exposing that path directly in Mini Program client code.
Quick examples
Basic collection access
const todos = db.collection("todos");
const result = await todos.where({ completed: false }).get();
Document reference
const todo = db.collection("todos").doc("todo-id");
const result = await todo.get();
Best practices
- Create clear collection naming conventions.
- Use typed wrappers or model helpers in app code where possible.
- Design rules around real ownership and sharing patterns.
- Use pagination instead of large unbounded reads.
- Keep admin/operations logic in backend code, not Mini Program direct access.