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Elixir 1.17+ development specialist covering Phoenix 1.7, LiveView, Ecto, and OTP patterns. Use when developing real-time applications, distributed systems, or Phoenix projects.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/modu-ai/cc-plugins --skill moai-lang-elixir命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
Design tool integration specialist covering Figma MCP, Pencil renderer, and Pencil-to-code export. Use when fetching design context from Figma, rendering Pencil DNA codes to .pen frames, exporting .pen designs to React/Tailwind code, or choosing design-to-code workflows. Supports design fetching (Figma), visual rendering (Pencil MCP), and code generation (React/Tailwind).
Documentation generation patterns for technical specs, API docs, user guides, and knowledge bases using real tools like Sphinx, MkDocs, TypeDoc, and Nextra. Use when creating docs from code, building doc sites, or automating documentation workflows.
Backend development specialist covering API design, database integration, microservices architecture, and modern backend patterns. Use when user asks about API design, REST or GraphQL endpoints, server implementation, authentication, authorization, middleware, or backend service architecture. Do NOT use for database-specific schema design or query optimization (use moai-domain-database instead) or frontend implementation (use moai-domain-frontend instead).
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基于 SOC 职业分类
| name | moai-lang-elixir |
| description | Elixir 1.17+ development specialist covering Phoenix 1.7, LiveView, Ecto, and OTP patterns. Use when developing real-time applications, distributed systems, or Phoenix projects. |
| license | Apache-2.0 |
| compatibility | Designed for Claude Code |
| allowed-tools | Read Grep Glob Bash(mix:*) Bash(elixir:*) Bash(iex:*) Bash(erl:*) mcp__context7__resolve-library-id mcp__context7__get-library-docs |
| user-invocable | false |
| metadata | {"version":"1.1.0","category":"language","status":"active","updated":"2026-01-11","modularized":"true","tags":"language, elixir, phoenix, liveview, ecto, otp, genserver"} |
| progressive_disclosure | {"enabled":true,"level1_tokens":100,"level2_tokens":5000} |
| triggers | {"keywords":["Elixir","Phoenix","LiveView","Ecto","OTP","GenServer",".ex",".exs","mix.exs"],"languages":["elixir"]} |
Elixir 1.17+ Development Specialist - Phoenix 1.7, LiveView, Ecto, OTP patterns, and functional programming.
Auto-Triggers: .ex, .exs files, mix.exs, config/, Phoenix/LiveView discussions
Core Capabilities:
Phoenix Controller: Define a module using MyAppWeb with :controller. Create alias for the context module like MyApp.Accounts. Define action functions like show taking conn and params map with destructured id. Fetch data using the context function with bang like get_user! and render the template passing the data as assigns.
For create actions, pattern match on the context result tuple. On ok tuple, use pipe operator to put_flash with success message and redirect using ~p sigil for verified routes. On error tuple with Ecto.Changeset, render the form template passing the changeset.
Ecto Schema with Changeset: Define a module using Ecto.Schema and importing Ecto.Changeset. Define the schema block with field declarations including types like :string and virtual fields. Create a changeset function taking the struct and attrs, using pipe operator to chain cast with the list of fields to cast, validate_required, validate_format with regex, validate_length with min option, and unique_constraint.
GenServer Pattern: Define a module using GenServer. Create start_link taking initial_value and calling GenServer.start_link with MODULE, initial_value, and name option. Define client API functions that call GenServer.call with MODULE and the message atom. Implement init callback returning ok tuple with state. Implement handle_call callbacks for each message, returning reply tuple with response and new state.
Pattern Matching Advanced: Define function heads with pattern matching on map keys and types. Use guard clauses with when to add constraints like is_binary or byte_size checks. Add a catch-all clause returning error tuple for invalid inputs.
Pipe Operator with Error Handling: Use the with special form for chaining operations that may fail. Pattern match each step with left arrow, and on successful completion of all steps, return the final ok tuple. In the else block, handle error tuples by returning them unchanged.
Protocols for Polymorphism: Define a protocol with @doc and function specification using defprotocol. Implement the protocol for specific types using defimpl with for: option. Each implementation provides the specific behavior for that type.
LiveView Component: Define a module using MyAppWeb with :live_view. Implement mount callback taking params, session, and socket, returning ok tuple with assigned state. Implement handle_event callback for user interactions, returning noreply tuple with updated socket using update helper. Implement render callback with assigns, using ~H sigil for HEEx templates with assigns accessed via @ prefix.
LiveView Form with Changesets: In mount, create initial changeset and assign using to_form helper. Implement validate event handler that creates changeset with :validate action and reassigns the form. Implement save event handler that calls context create function, on success using put_flash and push_navigate, on error reassigning the form with error changeset.
Phoenix Channels: Define a module using MyAppWeb with :channel. Implement join callback matching on topic pattern with angle brackets for dynamic segments. Use send with self() for after_join messages. Implement handle_info for server-side messages using push. Implement handle_in for client messages using broadcast! to send to all subscribers.
Verified Routes: Define routes in router.ex within scope blocks using live macro for LiveView routes. Use ~p sigil for verified routes in templates and controllers, with interpolation syntax for dynamic segments.
Multi for Transactions: Use Ecto.Multi.new() and pipe through operations using Ecto.Multi.update with name atoms and changeset functions. Use Ecto.Multi.insert with function callback when needing results from previous steps. Pipe final Multi to Repo.transaction() which returns ok or error tuple with named results.
Query Composition: Create a query module with composable query functions. Define a base function returning from expression. Create filter functions with default parameter for query, returning modified from expression with where clause. Chain functions with pipe operator before passing to Repo.all.
For comprehensive coverage including:
See:
moai-domain-backend - REST API and microservices architecturemoai-domain-database - SQL patterns and query optimizationmoai-workflow-testing - DDD and testing strategiesmoai-essentials-debug - AI-powered debuggingmoai-platform-deploy - Deployment and infrastructureCommon Issues:
Elixir Version Check: Run elixir --version to verify 1.17+ and mix --version for Mix build tool version.
Dependency Issues: Run mix deps.get to fetch dependencies, mix deps.compile to compile them, and mix clean to remove build artifacts.
Database Migrations: Run mix ecto.create to create database, mix ecto.migrate to run migrations, and mix ecto.rollback to rollback last migration.
Phoenix Server: Run mix phx.server to start the server, iex -S mix phx.server to start with IEx shell, and MIX_ENV=prod mix release to build production release.
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Last Updated: 2026-01-11 Status: Active (v1.1.0)