#407 Add collection filtering by field and value

example/config.yml

@@ -10,9 +10,13 @@ collections: # A list of collections the CMS should be able to edit
     folder: "_posts"
     slug: "{{year}}-{{month}}-{{day}}-{{slug}}"
     create: true # Allow users to create new documents in this collection
+    filter:
+      field: language
+      value: en
     fields: # The fields each document in this collection have
       - {label: "Title", name: "title", widget: "string", tagname: "h1"}
       - {label: "Publish Date", name: "date", widget: "datetime", format: "YYYY-MM-DD hh:mma"}
+      - {label: "Language", name: "language", widget: "string"}
       - {label: "Cover Image", name: "image", widget: "image", required: false, tagname: ""}
       - {label: "Body", name: "body", widget: "markdown"}
     meta:
@@ -26,6 +30,23 @@ collections: # A list of collections the CMS should be able to edit
       - {label: "Question", name: "title", widget: "string", tagname: "h1"}
       - {label: "Answer", name: "body", widget: "markdown"}
 
+  - name: "posts-pt" # Used in routes, ie.: /admin/collections/:slug/edit
+    label: "(PT) Post" # Used in the UI, ie.: "New Post"
+    folder: "_posts"
+    slug: "{{year}}-{{month}}-{{day}}-{{slug}}"
+    create: true # Allow users to create new documents in this collection
+    filter:
+      field: language
+      value: pt
+    fields: # The fields each document in this collection have
+      - {label: "Title", name: "title", widget: "string", tagname: "h1"}
+      - {label: "Publish Date", name: "date", widget: "datetime", format: "YYYY-MM-DD hh:mma"}
+      - {label: "Language", name: "language", widget: "string"}
+      - {label: "Cover Image", name: "image", widget: "image", required: false, tagname: ""}
+      - {label: "Body", name: "body", widget: "markdown"}
+    meta:
+      - {label: "SEO Description", name: "description", widget: "text"}
+
   - name: "settings"
     label: "Settings"
     editor:

example/index.html

@@ -11,16 +11,19 @@
   window.repoFiles = {
     _posts: {
       "2015-02-14-this-is-a-post.md": {
-        content: "---\ntitle: This is a YAML front matter post\nimage: /nf-logo.png\ndate: 2015-02-14T00:00:00.000Z\n---\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
+        content: "---\nlanguage: en\ntitle: This is a YAML front matter post\nimage: /nf-logo.png\ndate: 2015-02-14T00:00:00.000Z\n---\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
       },
       "2015-02-15-this-is-a-json-frontmatter-post.md": {
-        content: "{\n\"title\": \"This is a JSON front matter post\",\n\"image\": \"/nf-logo.png\",\n\"date\": \"2015-02-15T00:00:00.000Z\"\n}\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
+        content: "{\n\"language\": \"en\",\n\"title\": \"This is a JSON front matter post\",\n\"image\": \"/nf-logo.png\",\n\"date\": \"2015-02-15T00:00:00.000Z\"\n}\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
       },
       "2015-02-16-this-is-a-toml-frontmatter-post.md": {
-        content: "+++\ntitle = \"This is a TOML front matter post\"\nimage = \"/nf-logo.png\"\n\"date\" = \"2015-02-16T00:00:00.000Z\"\n+++\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
+        content: "+++\nlanguage = \"en\"\ntitle = \"This is a TOML front matter post\"\nimage = \"/nf-logo.png\"\n\"date\" = \"2015-02-16T00:00:00.000Z\"\n+++\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
       },
       "2015-02-14-this-is-a-post-with-a-different-extension.other": {
-        content: "---\ntitle: This post should not appear because the extension is different\nimage: /nf-logo.png\ndate: 2015-02-14T00:00:00.000Z\n---\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
+        content: "---\nlanguage: en\ntitle: This post should not appear because the extension is different\nimage: /nf-logo.png\ndate: 2015-02-14T00:00:00.000Z\n---\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
+      },
+      "2017-05-15-this-is-a-post-with-a-different-language.pt.md": {
+        content: "---\nlanguage: pt\ntitle: This post should appear in a separate collection because the language is different\nimage: /nf-logo.png\ndate: 2015-02-14T00:00:00.000Z\n---\n\n# I Am a Title in Markdown\n\nHello, world\n\n* One Thing\n* Another Thing\n* A Third Thing\n"
       }
     },
     _faqs: {
@@ -57,7 +60,7 @@
     var slug = dateString + "-post-number-" + i + ".md";
 
     window.repoFiles._posts[slug] = {
-      content: "---\ntitle: \"This is post # " + i + "\"\ndate: " + dateString + "T00:99:99.999Z\n---\n\n# The post is number " + i + "\n\nAnd this is yet another identical post body"
+      content: "---\nlanguage: \"en\"\ntitle: \"This is post # " + i + "\"\ndate: " + dateString + "T00:99:99.999Z\n---\n\n# The post is number " + i + "\n\nAnd this is yet another identical post body"
     }
   }
 

src/backends/backend.js

@@ -84,6 +84,7 @@ class Backend {
   listEntries(collection) {
     const listMethod = this.implementation[selectListMethod(collection)];
     const extension = selectFolderEntryExtension(collection);
+    const collectionFilter = collection.get('filter');
     return listMethod.call(this.implementation, collection, extension)
       .then(loadedEntries => (
         loadedEntries.map(loadedEntry => createEntry(
@@ -97,6 +98,14 @@ class Backend {
         {
           entries: entries.map(this.entryWithFormat(collection)),
         }
+      ))
+      // If this collection has a "filter" property, filter entries accordingly
+      .then(loadedCollection => (
+        {
+          entries: loadedCollection.entries.filter(
+            entry => (!collectionFilter || entry.data[collectionFilter.get('field')] === collectionFilter.get('value'))
+          ),
+        }
       ));
   }