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Api Info (module for Omeka S)

New versions of this module and support for Omeka S version 3.0 and above are available on GitLab, which seems to respect users and privacy better than the previous repository.

Api Info is a module for Omeka S that gives access to some infos about Omeka sites and resources, that are not available in the default api.

This module is mainly designed for external apps.

This module is compatible with Omeka v3, but keep the old workarounds (totals, thumbnail urls) for the near future.

Installation

See general end user documentation for [installing a module].

  • From the zip

Download the last release ApiInfo.zip from the list of releases, and uncompress it in the modules directory.

  • From the source and for development

If the module was installed from the source, rename the name of the folder of the module to ApiInfo.

Quick start

Data are available in /api/infos/{name} via a standard request.

Available infos:

  • /api/infos: all available infos on resources and files
  • /api/infos/{api_id}: total of any registered resource
    • /api/infos/items: total items
    • /api/infos/media: total media
    • /api/infos/item_sets: total item sets
    • /api/infos/resources: total resources
    • /api/infos/sites: total sites and pages
    • /api/infos/files: total files and file sizes
  • /api/infos/{api_id}?append=xx or /api/infos/{api_id}?append[]=xx&append[]=yy with urls, sites, objects, subjects, object_ids, subject_ids, owner_name: append some infos for resources (items, media, item sets, and annotations)
  • /api/infos/site_data: list of sites with full data (experimental)
  • /api/infos/settings: list of main settings (experimental)
  • /api/infos/site_settings: list of site settings (experimental)
  • /api/infos/ids?types[]=items: list of all ids of specified types. A standard query can be used to limit output. Two specific query parameters are available:
    • rank=xxx, where xxx is the resource id, allows to get only the specified resource with the rank as key.
    • prevnext=xxx, where xxx is the resource id, allows to get the previous resource id, if any, the current one (the one that is requested), and the next one, if any. Of course, rank and previous/next values have meaning only for one resource type, so it is useless to ask multiple types.
  • /api/infos/items?output=xxx: formatted output for datatables, by_itemset or tree
    • datatables: datatables is a js library to display data as a paginated and searchable table.
    • For tree, two modes are available. Either the query return the root id(s), either it returns all the ids of the tree.
      • query that returns only root id(s): the simplest query is to specify ids with id=xx or id[]=xx, or any other query. The tree is built with "dcterms:hasPart" by default. The term can be changed with argument tree_child. When the root uses a different term than other levels, for example with a skos thesaurus that uses skos:hasTopConcept and skos:narrower, the argument tree_base can be used.
      • query that returns all ids: the same arguments should be used (tree_child and tree_base), plus tree_parent. This last argument is required, because there is no default, so without it, the tree is built as in the first case and all ids are a root. For example, for a thesaurus built with the module Thesaurus, you can use (case 1): https://example.org/api/infos/items?id=###&tree_child_base=skos:hasTopConcept&tree_child=skos:narrower&output=tree To build a tree from an item set, you can use (case 2): https://example.org/api/infos/items?item_set_id=###&tree_parent=dcterms:isPartOf&output=tree Of course, in this second case, you can complete the query with property[0][joiner]=and&property[0][type]=nex&property[0][property]=dcterms:isPartOf directly in order to go back to the first case. Furthermore, the default name (or the level) is bibo:shortTitle and the default title is the default title of the resource. They can be changed with args tree_name and tree_title. When there are multiple roots, the name of the root can be specified with the first item set in the query.
  • /api/infos/user: metadata of the current user (experimental)
  • /api/infos/translations?locale=fr: all translations for the specified language (experimental)
  • /api/infos/coins (requires module Coins): Allows to get the COinS for the items specified with a standard query.
  • /api/infos/mappings (requires module Mapping): all mappings for any item query. If block_id is set, the params and query from the block will be used.
  • /api/infos/references (requires module Reference): Allows to get totals or all references for properties. To get them, use a standard query and append option and metadata, if needed. For example: /api/infos/references?property[0][property]=dcterms:title&property[0][type]=in&property[0][text]=my-text&option[filters][languages]=fra allows to get all totals for the specified text for each property. If you add &metadata[subjects]=dcterms:subject, you will have the list of subjects for the query. For more info about argueents, see Reference.

Important: The response is for all sites by default. Add argument site_id={##} or site_slug={slug} to get data for a site. The response supports the api keys, so rights are checked.

Specific data can be added via a listener on api.infos.resources.

Notes

  • the infos are available only through the api controller. To get them via api(), use a standard api search and use getTotalResults() on the response.
  • For media inside a site, the search query should use items_site_id, since the argument site_id has another meaning currently inside the core.
  • For files, use a standard media query with has_original=1, has_thumbnails=1 and items_site_id.

Other available infos:

  • terms and labels appended in resources templates and translated with append[]=all The argument append can be term, label, comment or all. Locale can be used too: locale=fr.
  • filter for media: has_original=1, has_thumbnails=1
  • list of files (urls) directly from the item data: append the arg append=urls.
  • list of sites (ids) directly from the item data: append the arg append=sites (deprecated since version Omeka 3.0, because available in standard api).
  • list of files and sites (ids) directly from the item data: append the arg append[]=urls&append[]=sites.
  • html of page content and html of blocks for site pages: append the arg append[]=html&append[]=blocks.

Note about the display of site page html: only pages of the main site are available. To render blocks with links, the site slug should be added in the config (file "config/local.config.php"):

    'router' => [
        'routes' => [
            'site' => [
                'options' => [
                    'defaults' => [
                        // Required by module ApiInfo to get html of site pages.
                        // Set the slug of the main site.
                        'site-slug' => 'my-default-site-for-api',
                    ],
                ],
            ],
        ],
    ],

TODO

  • Make the infos available directly by the internal api (and deprecate ones included in Omeka v3).
  • Allow to render html of any page.

Warning

Use it at your own risk.

It’s always recommended to backup your files and your databases and to check your archives regularly so you can roll back if needed.

Troubleshooting

See online issues on the module issues page.

License

This plugin is published under the CeCILL v2.1 license, compatible with GNU/GPL and approved by FSF and OSI.

In consideration of access to the source code and the rights to copy, modify and redistribute granted by the license, users are provided only with a limited warranty and the software’s author, the holder of the economic rights, and the successive licensors only have limited liability.

In this respect, the risks associated with loading, using, modifying and/or developing or reproducing the software by the user are brought to the user’s attention, given its Free Software status, which may make it complicated to use, with the result that its use is reserved for developers and experienced professionals having in-depth computer knowledge. Users are therefore encouraged to load and test the suitability of the software as regards their requirements in conditions enabling the security of their systems and/or data to be ensured and, more generally, to use and operate it in the same conditions of security. This Agreement may be freely reproduced and published, provided it is not altered, and that no provisions are either added or removed herefrom.

Copyright

  • Copyright Daniel Berthereau, 2019-2021 (see Daniel-KM on GitLab)

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Module for Omeka S that gives access to some infos about Omeka sites and resources, that are not available in the default api.

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