Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I don't know of any plugin that will accomplish what you're asking for. You <em>might</em> be able to hack in what you want by looking at <code>ActiveRecord::ConnectionAdapters::ColumnDefinition</code>. (See <code>active_record/connection_adapters/abstract/schema_definitions.rb</code>.)</p> <p>As you can see the <code>Struct</code> defines the various column options (like <code>:limit</code> and <code>:default</code>.) You could extended that struct with a <code>:comment</code> and then modify <code>#to_sql</code> to generate the required SQL. You would also need to modify <code>TableDefinition#column</code> to set the <code>:comment</code> attribute.</p> <p>The following has been tested and works (for MySQL):</p> <pre><code>module ActiveRecord module ConnectionAdapters class ColumnDefinition attr_accessor :comment def to_sql_with_comment column_sql = to_sql_without_comment return column_sql if comment.nil? "#{column_sql} COMMENT '#{base.quote_string(comment)}'" end alias_method_chain :to_sql, :comment end class TableDefinition # Completely replaces (and duplicates the existing code, but there's # no place to really hook into the middle of this.) def column(name, type, options = {}) column = self[name] || ColumnDefinition.new(@base, name, type) if options[:limit] column.limit = options[:limit] elsif native[type.to_sym].is_a?(Hash) column.limit = native[type.to_sym][:limit] end column.precision = options[:precision] column.scale = options[:scale] column.default = options[:default] column.null = options[:null] column.comment = options[:comment] @columns &lt;&lt; column unless @columns.include? column self end end end end </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POAny Rails plugin to add comments about each column in ActiveRecord migration files?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USrjk
    1. USrjk
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POAny Rails plugin to add comments about each column in ActiveRecord migration files?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COThanks! Your answer is amazing. I haven't test your code, either. But I'll take your approach.
      singulars
      1. PO
      1. USTK.
    2. COIt seems that the code isn't working.
      singulars
      1. PO
      1. USTK.
    3. COWhich part isn't working? Did you add any logging to see if the methods are being called?
      singulars
      1. PO
      1. USrjk
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload