Class: RailsAiBridge::Tools::Schema::TableFormatter

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_ai_bridge/tools/schema/table_formatter.rb

Overview

Renders a single database table as a Markdown block with columns, indexes, and foreign keys.

Instance Method Summary collapse

Constructor Details

#initialize(name:, data:) ⇒ void

Parameters:

  • name (String) —

    table name

  • data (Hash) —

    slice from schema introspection (+:columns+, +:indexes+, +:foreign_keys+)



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# File 'lib/rails_ai_bridge/tools/schema/table_formatter.rb', line 13

def initialize(name:, data:)
  @name = name
  @data = data
end

Instance Method Details

#call ⇒ String

Returns Markdown representation of the table.

Returns:

  • (String) —

    Markdown representation of the table



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# File 'lib/rails_ai_bridge/tools/schema/table_formatter.rb', line 19

def call
  lines = ["## Table: #{@name}", '']
  lines << '| Column | Type | Nullable | Default |'
  lines << '|--------|------|----------|---------|'

  (@data[:columns] || []).each do |col|
    lines << "| #{col[:name]} | #{col[:type]} | #{col[:null] ? 'yes' : 'no'} | #{col[:default] || '-'} |"
  end

  if @data[:indexes]&.any?
    lines << '' << '### Indexes'
    @data[:indexes].each do |idx|
      unique = idx[:unique] ? ' (unique)' : ''
      lines << "- `#{idx[:name]}` on (#{Array(idx[:columns]).join(', ')})#{unique}"
    end
  end

  if @data[:foreign_keys]&.any?
    lines << '' << '### Foreign keys'
    @data[:foreign_keys].each do |fk|
      lines << "- `#{fk[:column]}` → `#{fk[:to_table]}.#{fk[:primary_key]}`"
    end
  end

  lines.join("\n")
end