Module: Tina4::AutoCrud

Defined in:
lib/tina4/auto_crud.rb

Class Method Summary collapse

Class Method Details

.build_example(model_class) ⇒ Object

Build a sample request body from ORM field definitions.



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# File 'lib/tina4/auto_crud.rb', line 25

def build_example(model_class)
  example = {}
  return example unless model_class.respond_to?(:field_definitions)

  model_class.field_definitions.each do |name, opts|
    next if opts[:primary_key] && opts[:auto_increment]

    case opts[:type]
    when :integer
      example[name.to_s] = 0
    when :numeric, :float, :decimal
      example[name.to_s] = 0.0
    when :boolean
      example[name.to_s] = true
    when :datetime
      example[name.to_s] = "2024-01-01T00:00:00"
    else
      example[name.to_s] = "string"
    end
  end
  example
end

.clear! ⇒ Object 



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# File 'lib/tina4/auto_crud.rb', line 197

def clear!
  @models = []
end

.generate_routes(prefix: "/api") ⇒ Object

Generate REST endpoints for all registered models



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# File 'lib/tina4/auto_crud.rb', line 18

def generate_routes(prefix: "/api")
  models.each do |model_class|
    generate_routes_for(model_class, prefix: prefix)
  end
end

.generate_routes_for(model_class, prefix: "/api") ⇒ Object

Generate REST endpoints for a single model class



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# File 'lib/tina4/auto_crud.rb', line 49

def generate_routes_for(model_class, prefix: "/api")
  table = model_class.table_name
  pk = model_class.primary_key_field || :id
  pretty_name = table.to_s.split("_").map(&:capitalize).join(" ")
  example_body = build_example(model_class)

  # GET /api/{table} -- list all with pagination, filtering, sorting
  Tina4::Router.add_route("GET", "#{prefix}/#{table}", proc { |req, res|
    begin
      per_page = (req.query["per_page"] || req.query["limit"] || 10).to_i
      page     = (req.query["page"] || 1).to_i
      limit    = per_page
      offset   = req.query["offset"] ? req.query["offset"].to_i : (page - 1) * per_page
      order_by = parse_sort(req.query["sort"])

      # Filter support: ?filter[field]=value
      filter_conditions = []
      filter_values = []
      req.query.each do |key, value|
        if key =~ /\Afilter\[(\w+)\]\z/
          filter_conditions << "#{$1} = ?"
          filter_values << value
        end
      end

      if filter_conditions.empty?
        records = model_class.all(limit: limit, offset: offset, order_by: order_by)
        total = model_class.count
      else
        where_clause = filter_conditions.join(" AND ")
        records = model_class.where(where_clause, filter_values)
        total = records.length
        # Apply manual pagination for filtered results
        records = records.slice(offset, limit) || []
      end

      res.json({
        data: records.map { |r| r.to_h },
        total: total,
        limit: limit,
        offset: offset
      })
    rescue => e
      res.json({ error: e.message }, status: 500)
    end
  }, swagger_meta: { summary: "List all #{pretty_name}", tags: [table.to_s] })

  # GET /api/{table}/{id} -- get single record
  Tina4::Router.add_route("GET", "#{prefix}/#{table}/{id}", proc { |req, res|
    begin
      id = req.params["id"]
      record = model_class.find_by_id(id.to_i)
      if record
        res.json({ data: record.to_h })
      else
        res.json({ error: "Not found" }, status: 404)
      end
    rescue => e
      res.json({ error: e.message }, status: 500)
    end
  }, swagger_meta: { summary: "Get #{pretty_name} by ID", tags: [table.to_s] })

  # POST /api/{table} -- create record
  Tina4::Router.add_route("POST", "#{prefix}/#{table}", proc { |req, res|
    begin
      attributes = req.body_parsed
      record = model_class.create(attributes)
      if record.persisted?
        res.json({ data: record.to_h }, status: 201)
      else
        res.json({ errors: record.errors }, status: 422)
      end
    rescue => e
      res.json({ error: e.message }, status: 500)
    end
  }, swagger_meta: {
    summary: "Create #{pretty_name}",
    tags: [table.to_s],
    request_body: {
      "description" => "#{pretty_name} data",
      "required" => true,
      "content" => {
        "application/json" => {
          "schema" => { "type" => "object" },
          "example" => example_body
        }
      }
    }
  })

  # PUT /api/{table}/{id} -- update record
  Tina4::Router.add_route("PUT", "#{prefix}/#{table}/{id}", proc { |req, res|
    begin
      id = req.params["id"]
      record = model_class.find_by_id(id.to_i)
      unless record
        next res.json({ error: "Not found" }, status: 404)
      end

      attributes = req.body_parsed
      attributes.each do |key, value|
        setter = "#{key}="
        record.__send__(setter, value) if record.respond_to?(setter)
      end

      if record.save
        res.json({ data: record.to_h })
      else
        res.json({ errors: record.errors }, status: 422)
      end
    rescue => e
      res.json({ error: e.message }, status: 500)
    end
  }, swagger_meta: {
    summary: "Update #{pretty_name}",
    tags: [table.to_s],
    request_body: {
      "description" => "#{pretty_name} data",
      "required" => true,
      "content" => {
        "application/json" => {
          "schema" => { "type" => "object" },
          "example" => example_body
        }
      }
    }
  })

  # DELETE /api/{table}/{id} -- delete record
  Tina4::Router.add_route("DELETE", "#{prefix}/#{table}/{id}", proc { |req, res|
    begin
      id = req.params["id"]
      record = model_class.find_by_id(id.to_i)
      unless record
        next res.json({ error: "Not found" }, status: 404)
      end

      if record.delete
        res.json({ message: "Deleted" })
      else
        res.json({ error: "Delete failed" }, status: 500)
      end
    rescue => e
      res.json({ error: e.message }, status: 500)
    end
  }, swagger_meta: { summary: "Delete #{pretty_name}", tags: [table.to_s] })
end

.models ⇒ Object

Track registered model classes



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# File 'lib/tina4/auto_crud.rb', line 8

def models
  @models ||= []
end

.register(model_class) ⇒ Object

Register a model for auto-CRUD



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# File 'lib/tina4/auto_crud.rb', line 13

def register(model_class)
  models << model_class unless models.include?(model_class)
end