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https://github.com/discoverygarden/islandora_authority

Autocompletion from a set of (Solr indexed) authority records into a set of fields.
https://github.com/discoverygarden/islandora_authority

drupal-6 drupal-7

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Autocompletion from a set of (Solr indexed) authority records into a set of fields.

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# Islandora Authority Module [![Build Status](https://travis-ci.org/discoverygarden/islandora_authority.png?branch=7.x)](https://travis-ci.org/discoverygarden/islandora_authority)



## Introduction



This module adds two Drupal form API elements and a menu path used for autocompletion used for autocompletion on one of them. These two new elements are:

* `islandora_authority_textfield`: A textfield which can autocomplete on a Solr field.

* `islandora_authority_hidden`: A hidden element which can be autocompleted, as a result of a search.



One caveat: Due to how we perform lookups, forms in which these elements _must_ pass through Objective Forms to recieve `#hash` values.



## Requirements



This module requires the following modules/libraries:



* [Islandora Solr](https://github.com/Islandora/islandora_solr)

* [Objective Forms](https://github.com/Islandora/objective_forms)



## Installation



Install as usual, see [this](https://drupal.org/documentation/install/modules-themes/modules-7) for further information.



## Configuration



Our configuration is stored in `#user_data` on our `islandora_authority_textfield` and `islandora_authority_hidden` elements.



Generally, multiple `islandora_authority` elements are direct children of a common parent. The framework defines a single parameter on the parent:

* `islandora_authority_controller`: A machine name indicating the controller to use. Defaults to `solr` if otherwise unspecified.



### Solr Controller



Machine name: `solr`



This controller is attempted if no other is specified.



The Solr controller defines two parameters on the parent element:

* `islandora_authority_t_pattern`:  A pattern as used by Drupal's `format_string()`/`t()` function.

* `islandora_authority_fq`: A list of tilde-separated Lucene statements, e.g.: `PID:ir*`, to ensure all results come from the IR namespace. (Note: separating is done via a naive explode; tildes in values break it)



Each contained authority element specifies:

* `islandora_authority_solr_search_field`: Should be an EdgeNGram'd Solr field.

* `islandora_authority_solr_validate_field`: An optional Solr field to validate the contents of the element against. This does not prevent the form from being saved; it simply provides visual feedback on form load and element change for whether the field contains an authorized value. This should be an untokenized Solr field.

* `islandora_authority_solr_display_field`: An optional Solr field, used for display purposes (defaults to the search field).

* `islandora_authority_mapping`: An optional placeholder, which will make values for this field available for substitution into the `t_pattern` above.

* `islandora_authority_search_without_dismax`: A flag which should be set (to "true") when `islandora_authority_solr_search_field` is not an EdgeNGram'd Solr field, so queries will be made as (non-dismax) prefix queries instead of depending on the behaviour of EdgeNGrams. Note that EdgeNGrams are more predicatable in the results they return; prefix/wildcard queries [skip analysis](https://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#Analyzers), so indexing analysis can result in false-negatives.



## Troubleshooting/Issues



Having problems or solved a problem? Contact

[discoverygarden](http://support.discoverygarden.ca).



## Maintainers/Sponsors



Current maintainers:



* [discoverygarden Inc.](https://github.com/discoverygarden)



## Development



If you would like to contribute to this module, please check out our helpful [Documentation for Developers](https://github.com/Islandora/islandora/wiki#wiki-documentation-for-developers) info, as well as our [Developers](http://islandora.ca/developers) section on the Islandora.ca site.



## License



[GPLv3](http://www.gnu.org/licenses/gpl-3.0.txt)