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<li class="toctree-l2 current"><a class="current reference internal" href="#">Services</a></li>
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<li class="toctree-l2"><a class="reference internal" href="http.html">Working With HTTP Requests</a></li>
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<li class="toctree-l2"><a class="reference internal" href="security.html">Security Guidelines</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helper Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Global Functions and Constants</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/logging.html">Logging Information</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/modules.html">Code Modules</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../incoming/index.html">Controllers and Routing</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/controllers.html">Controllers</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/routing.html">URI Routing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/filters.html">Controller Filters</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/message.html">HTTP Messages</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/request.html">Request Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/incomingrequest.html">IncomingRequest Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/content_negotiation.html">Content Negotiation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/methodspoofing.html">HTTP Method Spoofing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../incoming/restful.html">RESTful Resource Handling</a></li>
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</ul>
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</ul>
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<li class="toctree-l1"><a class="reference internal" href="../outgoing/index.html">Building Responses</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/views.html">Views</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/view_cells.html">View Cells</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/view_renderer.html">View Renderer</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/view_layouts.html">View Layouts</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/view_parser.html">View Parser</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/table.html">HTML Table Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/response.html">HTTP Responses</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/api_responses.html">API Response Trait</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/localization.html">Localization</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../outgoing/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Working With Databases</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/events.html">Database Events</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../models/index.html">Modeling Data</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../models/model.html">Using CodeIgniter's Model</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../models/entities.html">Using Entity Classes</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../dbmgmt/index.html">Managing Databases</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../dbmgmt/forge.html">Database Manipulation with Database Forge</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dbmgmt/migration.html">Database Migrations</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../dbmgmt/seeds.html">Database Seeding</a></li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Library Reference</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/curlrequest.html">CURLRequest Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Service</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/files.html">Working with Files</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/honeypot.html">Honeypot Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/images.html">Image Manipulation Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/throttler.html">Throttler</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/time.html">Dates and Times</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/uploaded_files.html">Working with Uploaded Files</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">Working with URIs</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../libraries/validation.html">Validation</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/filesystem_helper.html">Filesystem Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/test_helper.html">Test Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../testing/index.html">Testing</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../testing/overview.html">Getting Started</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../testing/database.html">Database</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../testing/fabricator.html">Generating Data</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../testing/controllers.html">Controller Testing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../testing/feature.html">HTTP Testing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../testing/benchmark.html">Benchmarking</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../testing/debugging.html">Debugging Your Application</a></li>
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</ul>
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</li>
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</ul>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../cli/index.html">Command Line Usage</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli.html">Running via the Command Line</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli_commands.html">Custom CLI Commands</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli_library.html">CLI Library</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../cli/cli_request.html">CLIRequest Class</a></li>
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</ul>
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</li>
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="../extending/index.html">Extending CodeIgniter</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../extending/core_classes.html">Creating Core System Classes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/common.html">Replacing Common Functions</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/events.html">Events</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/basecontroller.html">Extending the Controller</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/authentication.html">Authentication</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../extending/contributing.html">Contributing to CodeIgniter</a></li>
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||
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
||
<div itemprop="articleBody">
|
||
|
||
<div class="section" id="services">
|
||
<h1>Services<a class="headerlink" href="#services" title="Permalink to this headline">¶</a></h1>
|
||
<div class="contents local topic" id="contents">
|
||
<ul class="simple">
|
||
<li><a class="reference internal" href="#introduction" id="id1">Introduction</a><ul>
|
||
<li><a class="reference internal" href="#convenience-functions" id="id2">Convenience Functions</a></li>
|
||
</ul>
|
||
</li>
|
||
<li><a class="reference internal" href="#defining-services" id="id3">Defining Services</a><ul>
|
||
<li><a class="reference internal" href="#allowing-parameters" id="id4">Allowing Parameters</a></li>
|
||
<li><a class="reference internal" href="#shared-classes" id="id5">Shared Classes</a></li>
|
||
<li><a class="reference internal" href="#service-discovery" id="id6">Service Discovery</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="introduction">
|
||
<h2><a class="toc-backref" href="#id1">Introduction</a><a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h2>
|
||
<p>All of the core classes within CodeIgniter are provided as “services”. This simply means that, instead
|
||
of hard-coding a class name to load, the classes to call are defined within a very simple
|
||
configuration file. This file acts as a type of factory to create new instances of the required class.</p>
|
||
<p>A quick example will probably make things clearer, so imagine that you need to pull in an instance
|
||
of the Timer class. The simplest method would simply be to create a new instance of that class:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$timer</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">\CodeIgniter\Debug\Timer</span><span class="p">();</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>And this works great. Until you decide that you want to use a different timer class in its place.
|
||
Maybe this one has some advanced reporting the default timer does not provide. In order to do this,
|
||
you now have to locate all of the locations in your application that you have used the timer class.
|
||
Since you might have left them in place to keep a performance log of your application constantly
|
||
running, this might be a time-consuming and error-prone way to handle this. That’s where services
|
||
come in handy.</p>
|
||
<p>Instead of creating the instance ourself, we let a central class create an instance of the
|
||
class for us. This class is kept very simple. It only contains a method for each class that we want
|
||
to use as a service. The method typically returns a shared instance of that class, passing any dependencies
|
||
it might have into it. Then, we would replace our timer creation code with code that calls this new class:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$timer</span> <span class="o">=</span> <span class="nx">\Config\Services</span><span class="o">::</span><span class="na">timer</span><span class="p">();</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>When you need to change the implementation used, you can modify the services configuration file, and
|
||
the change happens automatically throughout your application without you having to do anything. Now
|
||
you just need to take advantage of any new functionality and you’re good to go. Very simple and
|
||
error-resistant.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">It is recommended to only create services within controllers. Other files, like models and libraries should have the dependencies either passed into the constructor or through a setter method.</p>
|
||
</div>
|
||
<div class="section" id="convenience-functions">
|
||
<h3><a class="toc-backref" href="#id2">Convenience Functions</a><a class="headerlink" href="#convenience-functions" title="Permalink to this headline">¶</a></h3>
|
||
<p>Two functions have been provided for getting a service. These functions are always available.</p>
|
||
<p>The first is <code class="docutils literal notranslate"><span class="pre">service()</span></code> which returns a new instance of the requested service. The only
|
||
required parameter is the service name. This is the same as the method name within the Services
|
||
file always returns a SHARED instance of the class, so calling the function multiple times should
|
||
always return the same instance:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$logger</span> <span class="o">=</span> <span class="nx">service</span><span class="p">(</span><span class="s1">'logger'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>If the creation method requires additional parameters, they can be passed after the service name:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$renderer</span> <span class="o">=</span> <span class="nx">service</span><span class="p">(</span><span class="s1">'renderer'</span><span class="p">,</span> <span class="nx">APPPATH</span><span class="o">.</span><span class="s1">'views/'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>The second function, <code class="docutils literal notranslate"><span class="pre">single_service()</span></code> works just like <code class="docutils literal notranslate"><span class="pre">service()</span></code> but returns a new instance of
|
||
the class:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$logger</span> <span class="o">=</span> <span class="nx">single_service</span><span class="p">(</span><span class="s1">'logger'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="defining-services">
|
||
<h2><a class="toc-backref" href="#id3">Defining Services</a><a class="headerlink" href="#defining-services" title="Permalink to this headline">¶</a></h2>
|
||
<p>To make services work well, you have to be able to rely on each class having a constant API, or
|
||
<a class="reference external" href="https://www.php.net/manual/en/language.oop5.interfaces.php">interface</a>, to use. Almost all of
|
||
CodeIgniter’s classes provide an interface that they adhere to. When you want to extend or replace
|
||
core classes, you only need to ensure you meet the requirements of the interface and you know that
|
||
the classes are compatible.</p>
|
||
<p>For example, the <code class="docutils literal notranslate"><span class="pre">RouterCollection</span></code> class implements the <code class="docutils literal notranslate"><span class="pre">RouterCollectionInterface</span></code>. When you
|
||
want to create a replacement that provides a different way to create routes, you just need to
|
||
create a new class that implements the <code class="docutils literal notranslate"><span class="pre">RouterCollectionInterface</span></code>:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">MyRouter</span> <span class="k">implements</span> <span class="nx">\CodeIgniter\Router\RouteCollectionInterface</span>
|
||
<span class="p">{</span>
|
||
<span class="c1">// Implement required methods here.</span>
|
||
<span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Finally, modify <strong>/app/Config/Services.php</strong> to create a new instance of <code class="docutils literal notranslate"><span class="pre">MyRouter</span></code>
|
||
instead of <code class="docutils literal notranslate"><span class="pre">CodeIgniter\Router\RouterCollection</span></code>:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">static</span> <span class="k">function</span> <span class="nf">routes</span><span class="p">()</span>
|
||
<span class="p">{</span>
|
||
<span class="k">return</span> <span class="k">new</span> <span class="nx">\App\Router\MyRouter</span><span class="p">();</span>
|
||
<span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="section" id="allowing-parameters">
|
||
<h3><a class="toc-backref" href="#id4">Allowing Parameters</a><a class="headerlink" href="#allowing-parameters" title="Permalink to this headline">¶</a></h3>
|
||
<p>In some instances, you will want the option to pass a setting to the class during instantiation.
|
||
Since the services file is a very simple class, it is easy to make this work.</p>
|
||
<p>A good example is the <code class="docutils literal notranslate"><span class="pre">renderer</span></code> service. By default, we want this class to be able
|
||
to find the views at <code class="docutils literal notranslate"><span class="pre">APPPATH.views/</span></code>. We want the developer to have the option of
|
||
changing that path, though, if their needs require it. So the class accepts the <code class="docutils literal notranslate"><span class="pre">$viewPath</span></code>
|
||
as a constructor parameter. The service method looks like this:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">static</span> <span class="k">function</span> <span class="nf">renderer</span><span class="p">(</span><span class="nv">$viewPath</span><span class="o">=</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">'views/'</span><span class="p">)</span>
|
||
<span class="p">{</span>
|
||
<span class="k">return</span> <span class="k">new</span> <span class="nx">\CodeIgniter\View\View</span><span class="p">(</span><span class="nv">$viewPath</span><span class="p">);</span>
|
||
<span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>This sets the default path in the constructor method, but allows for easily changing
|
||
the path it uses:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$renderer</span> <span class="o">=</span> <span class="nx">\Config\Services</span><span class="o">::</span><span class="na">renderer</span><span class="p">(</span><span class="s1">'/shared/views'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="shared-classes">
|
||
<h3><a class="toc-backref" href="#id5">Shared Classes</a><a class="headerlink" href="#shared-classes" title="Permalink to this headline">¶</a></h3>
|
||
<p>There are occasions where you need to require that only a single instance of a service
|
||
is created. This is easily handled with the <code class="docutils literal notranslate"><span class="pre">getSharedInstance()</span></code> method that is called from within the
|
||
factory method. This handles checking if an instance has been created and saved
|
||
within the class, and, if not, creates a new one. All of the factory methods provide a
|
||
<code class="docutils literal notranslate"><span class="pre">$getShared</span> <span class="pre">=</span> <span class="pre">true</span></code> value as the last parameter. You should stick to the method also:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">Services</span>
|
||
<span class="p">{</span>
|
||
<span class="k">public</span> <span class="k">static</span> <span class="k">function</span> <span class="nf">routes</span><span class="p">(</span><span class="nv">$getShared</span> <span class="o">=</span> <span class="k">false</span><span class="p">)</span>
|
||
<span class="p">{</span>
|
||
<span class="k">if</span> <span class="p">(</span><span class="o">!</span> <span class="nv">$getShared</span><span class="p">)</span>
|
||
<span class="p">{</span>
|
||
<span class="k">return</span> <span class="k">new</span> <span class="nx">\CodeIgniter\Router\RouteCollection</span><span class="p">();</span>
|
||
<span class="p">}</span>
|
||
|
||
<span class="k">return</span> <span class="k">static</span><span class="o">::</span><span class="na">getSharedInstance</span><span class="p">(</span><span class="s1">'routes'</span><span class="p">);</span>
|
||
<span class="p">}</span>
|
||
<span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="service-discovery">
|
||
<h3><a class="toc-backref" href="#id6">Service Discovery</a><a class="headerlink" href="#service-discovery" title="Permalink to this headline">¶</a></h3>
|
||
<p>CodeIgniter can automatically discover any Config\Services.php files you may have created within any defined namespaces.
|
||
This allows simple use of any module Services files. In order for custom Services files to be discovered, they must
|
||
meet these requirements:</p>
|
||
<ul class="simple">
|
||
<li>Its namespace must be defined in <code class="docutils literal notranslate"><span class="pre">Config\Autoload.php</span></code></li>
|
||
<li>Inside the namespace, the file must be found at <code class="docutils literal notranslate"><span class="pre">Config\Services.php</span></code></li>
|
||
<li>It must extend <code class="docutils literal notranslate"><span class="pre">CodeIgniter\Config\BaseService</span></code></li>
|
||
</ul>
|
||
<p>A small example should clarify this.</p>
|
||
<p>Imagine that you’ve created a new directory, <code class="docutils literal notranslate"><span class="pre">Blog</span></code> in your root directory. This will hold a <strong>blog module</strong> with controllers,
|
||
models, etc, and you’d like to make some of the classes available as a service. The first step is to create a new file:
|
||
<code class="docutils literal notranslate"><span class="pre">Blog\Config\Services.php</span></code>. The skeleton of the file should be:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> <span class="k">namespace</span> <span class="nx">Blog\Config</span><span class="p">;</span>
|
||
|
||
<span class="k">use</span> <span class="nx">CodeIgniter\Config\BaseService</span><span class="p">;</span>
|
||
|
||
<span class="k">class</span> <span class="nc">Services</span> <span class="k">extends</span> <span class="nx">BaseService</span>
|
||
<span class="p">{</span>
|
||
<span class="k">public</span> <span class="k">static</span> <span class="k">function</span> <span class="nf">postManager</span><span class="p">()</span>
|
||
<span class="p">{</span>
|
||
<span class="o">...</span>
|
||
<span class="p">}</span>
|
||
<span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Now you can use this file as described above. When you want to grab the posts service from any controller, you
|
||
would simply use the framework’s <code class="docutils literal notranslate"><span class="pre">Config\Services</span></code> class to grab your service:</p>
|
||
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$postManager</span> <span class="o">=</span> <span class="nx">Config\Services</span><span class="o">::</span><span class="na">postManager</span><span class="p">();</span>
|
||
</pre></div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">If multiple Services files have the same method name, the first one found will be the instance returned.</p>
|
||
</div>
|
||
</div>
|
||
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|
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