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| var _ = require('lodash');
var keystone = require('../../');
var utils = keystone.utils;
/**
* Content Class
*
* Accessed via `Keystone.content`
*
* @api public
*/
var Content = function () {};
/**
* Loads page content by page key (optional).
*
* If page key is not provided, returns a hash of all page contents in the database.
*
* ####Example:
*
* keystone.content.fetch('home', function(err, content) { ... });
*
* @param {String} key (optional)
* @param {Function} callback
* @api public
*/
Content.prototype.fetch = function (page, callback) {
if (utils.isFunction(page)) {
callback = page;
page = null;
}
var content = this;
if (!this.AppContent) {
return callback({ error: 'invalid page', message: 'No pages have been registered.' });
}
if (page) {
if (!this.pages[page]) {
return callback({ error: 'invalid page', message: 'The page ' + page + ' does not exist.' });
}
this.AppContent.findOne({ key: page }, function (err, result) {
if (err) return callback(err);
return callback(null, content.pages[page].populate(result ? result.content.data : {}));
});
} else {
this.AppContent.find(function (err, results) {
if (err) return callback(err);
var data = {};
results.forEach(function (i) {
if (content.pages[i.key]) {
data[i.key] = content.pages[i.key].populate(i.content.data);
}
});
_.forEach(content.pages, function (i) {
if (!data[i.key]) {
data[i.key] = i.populate();
}
});
return data;
});
}
};
/**
* Sets page content by page key.
*
* Merges content with existing content.
*
* ####Example:
*
* keystone.content.store('home', { title: 'Welcome' }, function(err) { ... });
*
* @param {String} key
* @param {Object} content
* @param {Function} callback
* @api public
*/
Content.prototype.store = function (page, content, callback) {
if (!this.pages[page]) {
return callback({ error: 'invalid page', message: 'The page ' + page + ' does not exist.' });
}
content = this.pages[page].validate(content);
// TODO: Handle validation errors
this.AppContent.findOne({ key: page }, function (err, doc) {
if (err) return callback(err);
if (doc) {
if (doc.content) {
doc.history.push(doc.content);
}
_.defaults(content, doc.content);
} else {
doc = new content.AppContent({ key: page });
}
doc.content = { data: this.pages[page].clean(content) };
doc.lastChangeDate = Date.now();
doc.save(callback);
});
};
/**
* Registers a page. Should not be called directly, use Page.register() instead.
*
* @param {Page} page
* @api private
*/
Content.prototype.page = function (key, page) {
if (!this.pages) {
this.pages = {};
}
if (arguments.length === 1) {
if (!this.pages[key]) {
throw new Error('keystone.content.page() Error: page ' + key + ' cannot be registered more than once.');
}
return this.pages[key];
}
this.initModel();
if (this.pages[key]) {
throw new Error('keystone.content.page() Error: page ' + key + ' cannot be registered more than once.');
}
this.pages[key] = page;
return page;
};
/**
* Ensures the Mongoose model for storing content is initialised.
*
* Called automatically when pages are added.
*
* @api private
*/
Content.prototype.initModel = function () {
if (this.AppContent) return;
var contentSchemaDef = {
createdAt: { type: Date, default: Date.now },
data: { type: keystone.mongoose.Schema.Types.Mixed },
};
var ContentSchema = new keystone.mongoose.Schema(contentSchemaDef);
var PageSchema = new keystone.mongoose.Schema({
page: { type: String, index: true },
lastChangeDate: { type: Date, index: true },
content: contentSchemaDef,
history: [ContentSchema],
}, { collection: 'app_content' });
this.AppContent = keystone.mongoose.model('App_Content', PageSchema);
};
/**
* Outputs client-side editable data for content management
*
* Called automatically when pages are added.
*
* @api private
*/
Content.prototype.editable = function (user, options) {
if (!user || !user.canAccessKeystone) {
return undefined;
}
if (options.list) {
var list = keystone.list(options.list);
if (!list) {
return JSON.stringify({ type: 'error', err: 'list not found' });
}
var data = {
type: 'list',
path: list.path,
singular: list.singular,
plural: list.plural,
};
if (options.id) {
data.id = options.id;
}
return JSON.stringify(data);
}
};
/**
* The exports object is an instance of Content.
*
* @api public
*/
module.exports = new Content();
// Expose Classes
exports.Page = require('./page');
exports.Types = require('./types');
|