chamilo-lms/plugin/ims_lti

IMS/LTI plugin

Version 1.9.0

This plugin is meant to be later integrated into Chamilo (in a major version release).

This plugin allows certified support for LTI 1.0, 1.1, 1.1.1, Deep Linking 1.x, Outcome Services 1.x. You can get information about the LTI Certification on this page. The LTI 1.3 is being developed.

IMS/LTI defines the possibility to integrate tools or content into Chamilo. This plugin allows the integration of a new tool into courses, obtaining data back from those tools and recording them as gradebook "external" activities.

As a platform admin, you can register external tools available for all courses. You need set the tools settings in the IMS/LTI administration page. Then the registered tools should be added in each course individually.

As a teacher, you can register external tools available only for the current course. You need follow the link in the IMS/LTI block located in the Course Settings tool. Then select a tool registered previously or register a new external tool.

Installation

• Prepare your web server to allow to send cookies in all contexts, set the SameSite attribute to None

  • i.e. Apache configuration

    Header edit Set-Cookie ^(.*)$ $1;HttpOnly;Secure;SameSite=None
    

1. Install the plugin from the Plugins page
2. Enable the plugin from the IMS/LTI Plugin Settings page
3. Assign to the Administrator region (in the regions management page)

Changelog

v1.9

Requires DB changes to upgrade, see v1.9.

• Add option to add LTI tool to sessions

v1.8

Requires DB changes to upgrade, see v1.8.

• Add option to add replacements for launch params

v1.7

Requires DB changes to upgrade, see v1.8.

• Fix auth params
• Add option to show LTI tool in iframe or new window.

v1.6

Requires DB changes to upgrade, see v1.8.

• Add support to LTI 1.3 and Advantage Services

v1.5

Requires DB changes to upgrade, see v1.8.

• Plugin has passed the tests from the LTI Certification suite.
• Add support for substitution of variable. See ImsLti::getSubstitutableParams().
• Outcome services has a unique URL and sourced ID.

v1.4

Requires DB changes to upgrade, see v1.8.

• Allow create external tools when there is no key/secret available for launch

v1.3

Requires DB changes to upgrade, see v1.8.

• Privacy settings added. Allow to indicate id the launcher's data should be sent in request.

v1.2

Requires DB changes to upgrade, see v1.8.

• Register course in which the tool was added.
• Register parent tool from which the new tool comes from.

v1.1

Requires DB changes to upgrade, see v1.8.

• Support for Deep-Linking added.
• Support for outcomes services. And register score on course gradebook.

Upgrading

Run this changes on database:

To v1.9.0

ALTER TABLE plugin_ims_lti_tool
    ADD session_id INT DEFAULT NULL;
ALTER TABLE plugin_ims_lti_tool
    ADD CONSTRAINT FK_C5E47F7C613FECDF FOREIGN KEY (session_id) REFERENCES session (id);
CREATE INDEX IDX_C5E47F7C613FECDF ON plugin_ims_lti_tool (session_id);

To v1.8.0

ALTER TABLE plugin_ims_lti_tool
    ADD replacement_params LONGTEXT NOT NULL COMMENT '(DC2Type:json)';

To v1.7.0

ALTER TABLE plugin_ims_lti_tool
    ADD launch_presentation LONGTEXT NOT NULL COMMENT '(DC2Type:json)';

To v1.6.0

CREATE TABLE plugin_ims_lti_platform
(
    id          INT AUTO_INCREMENT NOT NULL,
    kid         VARCHAR(255)       NOT NULL,
    public_key  LONGTEXT           NOT NULL,
    private_key LONGTEXT           NOT NULL,
    PRIMARY KEY (id)
) DEFAULT CHARACTER SET utf8
  COLLATE utf8_unicode_ci
  ENGINE = InnoDB;
CREATE TABLE plugin_ims_lti_token
(
    id         INT AUTO_INCREMENT NOT NULL,
    tool_id    INT DEFAULT NULL,
    scope      LONGTEXT           NOT NULL COMMENT '(DC2Type:json)',
    hash       VARCHAR(255)       NOT NULL,
    created_at INT                NOT NULL,
    expires_at INT                NOT NULL,
    INDEX IDX_F7B5692F8F7B22CC (tool_id),
    PRIMARY KEY (id)
) DEFAULT CHARACTER SET utf8
  COLLATE utf8_unicode_ci
  ENGINE = InnoDB;
ALTER TABLE plugin_ims_lti_token
    ADD CONSTRAINT FK_F7B5692F8F7B22CC FOREIGN KEY (tool_id) REFERENCES plugin_ims_lti_tool (id) ON DELETE CASCADE;
ALTER TABLE plugin_ims_lti_tool
    ADD client_id          VARCHAR(255) DEFAULT NULL,
    ADD public_key         LONGTEXT     DEFAULT NULL,
    ADD login_url          VARCHAR(255) DEFAULT NULL,
    ADD redirect_url       VARCHAR(255) DEFAULT NULL,
    ADD advantage_services LONGTEXT     DEFAULT NULL COMMENT '(DC2Type:json)',
    ADD version            VARCHAR(255) DEFAULT 'lti1p1' NOT NULL;
CREATE TABLE plugin_ims_lti_lineitem
(
    id          INT AUTO_INCREMENT NOT NULL,
    tool_id     INT                NOT NULL,
    evaluation  INT                NOT NULL,
    resource_id VARCHAR(255) DEFAULT NULL,
    tag         VARCHAR(255) DEFAULT NULL,
    start_date  DATETIME     DEFAULT NULL,
    end_date    DATETIME     DEFAULT NULL,
    INDEX IDX_BA81BBF08F7B22CC (tool_id),
    UNIQUE INDEX UNIQ_BA81BBF01323A575 (evaluation),
    PRIMARY KEY (id)
) DEFAULT CHARACTER SET utf8
  COLLATE utf8_unicode_ci
  ENGINE = InnoDB;
ALTER TABLE plugin_ims_lti_lineitem
    ADD CONSTRAINT FK_BA81BBF08F7B22CC FOREIGN KEY (tool_id) REFERENCES plugin_ims_lti_tool (id) ON DELETE CASCADE;
ALTER TABLE plugin_ims_lti_lineitem
    ADD CONSTRAINT FK_BA81BBF01323A575 FOREIGN KEY (evaluation) REFERENCES gradebook_evaluation (id) ON DELETE CASCADE;

To v1.5.1

ALTER TABLE plugin_ims_lti_tool
    DROP FOREIGN KEY FK_C5E47F7C727ACA70,
    ADD FOREIGN KEY (parent_id) REFERENCES plugin_ims_lti_tool (id) ON DELETE CASCADE ON UPDATE RESTRICT;

To v1.4

ALTER TABLE plugin_ims_lti_tool
    CHANGE consumer_key consumer_key VARCHAR(255) DEFAULT NULL,
    CHANGE shared_secret shared_secret VARCHAR(255) DEFAULT NULL;

To v1.3

ALTER TABLE plugin_ims_lti_tool
    ADD privacy LONGTEXT DEFAULT NULL;

To v1.2

ALTER TABLE plugin_ims_lti_tool
    ADD c_id INT DEFAULT NULL;
ALTER TABLE plugin_ims_lti_tool
    ADD CONSTRAINT FK_C5E47F7C91D79BD3 FOREIGN KEY (c_id) REFERENCES course (id);
CREATE INDEX IDX_C5E47F7C91D79BD3 ON plugin_ims_lti_tool (c_id);

ALTER TABLE plugin_ims_lti_tool
    ADD parent_id INT DEFAULT NULL,
    DROP is_global;
ALTER TABLE plugin_ims_lti_tool
    ADD CONSTRAINT FK_C5E47F7C727ACA70 FOREIGN KEY (parent_id) REFERENCES plugin_ims_lti_tool (id);
CREATE INDEX IDX_C5E47F7C727ACA70 ON plugin_ims_lti_tool (parent_id);

To v1.1

ALTER TABLE plugin_ims_lti_tool
    ADD active_deep_linking TINYINT(1) DEFAULT '0' NOT NULL,
    CHANGE id id INT AUTO_INCREMENT NOT NULL,
    CHANGE launch_url launch_url VARCHAR(255) NOT NULL;

ALTER TABLE plugin_ims_lti_tool
    ADD gradebook_eval_id INT DEFAULT NULL;
ALTER TABLE plugin_ims_lti_tool
    ADD CONSTRAINT FK_C5E47F7C82F80D8B FOREIGN KEY (gradebook_eval_id) REFERENCES gradebook_evaluation (id) ON DELETE SET NULL;
CREATE INDEX IDX_C5E47F7C82F80D8B ON plugin_ims_lti_tool (gradebook_eval_id);