Returns a string of option tags that have been compiled by iterating over
the collection and assigning the result of a call to the
value_method as the option value and the
text_method as the option text.
1 2 | options_from_collection_for_select(@people, 'id', 'name')# => <option value="#{person.id}">#{person.name}</option> |
This is more often than not used inside a select_tag like this example:
1 | select_tag 'person', options_from_collection_for_select(@people, 'id', 'name') |
If selected is specified as a value or array of values, the
element(s) returning a match on value_method will be selected
option tag(s).
If selected is specified as a Proc, those members of the
collection that return true for the anonymous function are the selected
values.
selected can also be a hash, specifying both
:selected and/or :disabled values as required.
Be sure to specify the same class as the value_method when
specifying selected or disabled options. Failure to do this will produce
undesired results. Example:
1 | options_from_collection_for_select(@people, 'id', 'name', '1') |
Will not select a person with the id of 1 because 1 (an Integer) is not the same as '1' (a string)
1 | options_from_collection_for_select(@people, 'id', 'name', 1) |
should produce the desired results.
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