Added verbose instructions for Solr 7 and Drupal 7

Author: jenlampton

README.md

@@ -33,7 +33,7 @@ This add-on integrates Solr for Drupal 9+ into your [DDEV](https://ddev.com/) pr
    ddev drush en -y search_api_solr
    ```
 4. Create a Search API server at `admin/config/search/search-api` -> "Add server"
-5. Create a server with the following settings
+5. Configure the server with the following settings:
    * Set "Server name" to anything you want. Maybe `ddev-solr-server`.
    * Set "Backend" to `Solr`
    * Configure Solr backend
@@ -43,13 +43,75 @@ This add-on integrates Solr for Drupal 9+ into your [DDEV](https://ddev.com/) pr
      * Under "Advanced server configuration" set the "solr.install.dir" to `/opt/solr`.
 6. `ddev restart`
 
-### Outdated Solr config files
+## Installation on Drupal 7
+
+### Ddev / Solr configuration
+
+1. Install this add-on: `ddev add-on get ddev/ddev-drupal-solr`
+2. Set the version of Solr verison 7: Edit the `.ddev/docker-compose.solr.yaml` file. Replace `image: solr:8` with `image: solr:7` on line 34.
+3. Add the schema needed for version 7: Defaults can be found in the Search API Solr in the `search_api_solr/solr-conf/7.x` directory . Copy these files into `.ddev/solr/conf`.
+4. Restart Ddev: `ddev restart`.
+5. Confirm Solr is working by visiting `http://<projectname>.ddev.site:8983/solr/`.
+6. If the Ddev drush version is too new for Drupal 7, you may need to symlink `drush` to the `drush8` provided with Ddev. You can do this by adding a `post-start` hook inside your `.ddev/config.yaml` file as follows
+  ```
+  hooks:
+    post-start:
+    - exec: ln -s /usr/local/bin/drush8 /usr/local/bin/drush
+  ```
+7. Restart Ddev: `ddev restart`.
+
+### Drupal configuration
+
+1. You may need to install the relevant Drupal modules: `ddev drush dl search_api_solr`.
+2. Enable the `search_api_solr` module either using the web interface or `ddev drush en -y search_api_solr`
+4. Create a Search API server at `admin/config/search/search-api` -> "Add server"
+5. Configure the server with the following settings:
+   * Set "Server name" to anything you want. Maybe `ddev-solr-server`.
+   * Set "Protocol" to `http`
+   * Set "Solr host" to `solr`
+   * Set "Solr port" to `8983`
+   * Set "path" to `/solr/dev`.
+   The "Solr server URI" should be `http://solr:8983/solr/dev` when done.
+6. Create a Search API index at `admin/config/search/search-api` -> "Add index"
+7. Configure the index as needed, but this is common:
+   * Set "Server name" to anything you want. Maybe `ddev-solr-index-content`.
+   * Set "item type" to `content`
+   * Set the server to `ddev-solr-server` (or whaver the name is)
+   * Index the site.
+8. Build a new view of indexed content `ddev-solr-index-content` (or whatever the name is)
+7. Configure the view as needed, but this is common:
+   * Set "View name" to anything you want. Maybe `Solr Search`.
+   * Set "Show" to `ddev-solr-index-content` (or whatever the name is)
+   * Tick the box for "Create a page"
+     * Set the "Page title" to `Search` or whatever you prefer
+     * Set the "Path" to `/search` or whatever you prefer
+     * Set "Display format" to `HTML list` + `OL` / `Rendered entity` + `Search result` view mode
+   * Continue and edit
+   * Add filters:
+     * Add an EXPOSED filter for `Search: Fulltext search (exposed)`
+     * Add additional filters as needed (recommended: `Indexed Content: Status (= Published)`)
+   * Add sort criteria:
+     * Add a sort on `Search: Relevance (desc)`
+   * Set "access control: to `Permission` / `View published content`
+   * Set "Exposed form style" to `Input required`
+   * Set "No Results behavior" to `Global:text` / `No results matched your search.`
+   * (Optional) Set "Exposed form in block" setting
+
+## Outdated Solr config files
 
 If you get a message about Solr having outdated config files, you need to update the included Solr config files.
 
+### Drupal 9+:
+
 1. Click "Get config.zip" on the server page
 2. Unzip the files, and put the config files into `.ddev/solr/conf/`
-3. Run `ddev restart`
+3. Restart Ddev: `ddev restart`
+
+### Drupal 7
+
+1. Locate the example files in the `search_api_solr/solr-conf/7.x` directory .
+2. Copy these files into `.ddev/solr/conf`.
+4. Restart Ddev: `ddev restart`.
 
 ### Other frameworks
 
@@ -68,7 +130,7 @@ See [the documentation in the `doc` folder](doc/README.md)
 
 This originates from the classic Drupal `solr:8` image recipe used for a long time by Drupal users and compatible with `search_api_solr`.
 
-* It installs a [`.ddev/docker-compose.solr.yaml`](docker-compose.solr.yaml) using the `solr:8` docker image.
+* This add-on installs a [`.ddev/docker-compose.solr.yaml`](docker-compose.solr.yaml) using the `solr:8` docker image.
 * A standard Drupal 9+ Solr configuration is included in [.ddev/solr/conf](solr/conf).
 * A [.ddev/docker-entrypoint-initdb.d/solr-configupdate.sh](solr/docker-entrypoint-initdb.d/solr-configupdate.sh) is included and mounted into the Solr container so that you can change Solr config in `.ddev/solr/conf` with just a `ddev restart`.