Fix discharge summary not appearing in PDF after HTML editor conversion
- Enhanced normalizeRichText() to detect and preserve HTML from HTML editors - Added renderRichText() helper to safely render HTML vs plain text content - Updated 4 rendering locations (narrative sections, systemic exams, investigations) - Backward compatible: plain textarea fields still work correctly - Fixes issue where strip_tags() removed all HTML formatting from editor content Resolves blank discharge summaries in PDF when content saved from TinyMCE/HTML editors
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DISCHARGE_SUMMARY_HTML_EDITOR_FIX.md
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DISCHARGE_SUMMARY_HTML_EDITOR_FIX.md
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# Discharge Summary HTML Editor Fix
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## Problem
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After converting textarea controls to HTML editors (TinyMCE/similar) in the discharge form, saved discharge summaries were not appearing in the generated PDF.
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## Root Cause
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The `normalizeRichText()` function at line 1591 in `Ipd_discharge.php` was stripping ALL HTML tags using `strip_tags()`. This was designed for plain textarea input, but when HTML editors save formatted content with `<p>`, `<b>`, `<div>`, `<ul>`, etc., all the markup was being removed, leaving empty or malformed content.
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## Affected Fields
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- Presenting Complaints (complaint_remark)
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- Final Diagnosis (diagnosis_remark)
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- Course in Hospital (course_remark)
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- Summary of Key Investigations (inhos_remark)
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- Other/Systemic Examinations (systemic exam text)
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- Other Examinations/Provisional Diagnosis (other_exam_text)
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## Solution
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Modified the following methods in `app/Controllers/Ipd_discharge.php`:
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### 1. Enhanced `normalizeRichText()` (line 1591)
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- Detects if content contains HTML tags from HTML editor
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- **If HTML detected**: Preserves HTML structure, only cleans whitespace
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- **If plain text**: Uses original logic (strip tags, convert to plain text)
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- Backward compatible with existing plain textarea fields
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### 2. Added `renderRichText()` (new method after normalizeRichText)
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- Detects HTML vs plain text content
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- **If HTML**: Returns content as-is for HTML rendering
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- **If plain text**: Applies `esc()` and `nl2br()` for safe output
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### 3. Updated rendering methods
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- `buildNarrativeSection()`: Changed `nl2br(esc($remark))` to `$this->renderRichText($remark)`
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- Systemic exam section: Changed `nl2br(esc($value))` to `$this->renderRichText($value)`
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- Other exam section: Changed `nl2br(esc($otherExamText))` to `$this->renderRichText($otherExamText)`
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- Key investigations section: Changed `nl2br(esc($inhosRemark))` to `$this->renderRichText($inhosRemark)`
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## Changes Made
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```
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File: app/Controllers/Ipd_discharge.php
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- Line ~1591: Enhanced normalizeRichText() to preserve HTML
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- Line ~1625: Added new renderRichText() helper method
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- Line ~1768: Updated buildNarrativeSection() to use renderRichText()
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- Line ~1932: Updated systemic exam rendering to use renderRichText()
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- Line ~2094: Updated other exam rendering to use renderRichText()
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- Line ~2113: Updated key investigations rendering to use renderRichText()
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```
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## Testing
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1. Open discharge form: `/Ipd_discharge/ipd_select/1007170`
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2. Verify HTML editor content is saved correctly
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3. Preview discharge PDF
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4. Check that formatted content (bold, lists, paragraphs) appears correctly
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5. Test with both HTML editor and plain textarea fields (backward compatibility)
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## Backward Compatibility
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✅ Existing plain textarea fields continue to work
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✅ HTML editor fields now render correctly
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✅ No database changes required
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✅ Automatic detection of content type (HTML vs plain text)
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## Security
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- HTML editor content is NOT escaped (assumes HTML editor provides safe content)
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- Plain text content continues to be escaped with `esc()` function
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- No XSS risk if HTML editor properly sanitizes input
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@ -1595,6 +1595,21 @@ class Ipd_discharge extends BaseController
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return '';
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}
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// Check if content contains HTML tags (from HTML editor)
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// Look for common HTML tags: p, div, span, strong, b, i, em, ul, ol, li, table, tr, td, br
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if (preg_match('/<(?:p|div|span|strong|b|i|em|ul|ol|li|table|tr|td|th|thead|tbody|h[1-6])\b[^>]*>/i', $value)) {
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// Content is HTML - preserve it but clean up whitespace
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// Remove excessive newlines between tags and trim
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$value = preg_replace('/>\s+</', '><', $value) ?? $value;
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$value = preg_replace('/\r\n?/', "\n", $value) ?? $value;
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// Decode HTML entities that might have been double-encoded
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$value = html_entity_decode($value, ENT_QUOTES | ENT_HTML5, 'UTF-8');
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return trim($value);
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}
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// Content is plain text (legacy textarea) - convert to plain text
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$value = preg_replace('/<\s*br\s*\/?\s*>/i', "\n", $value) ?? $value;
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$value = preg_replace('/<\s*\/\s*p\s*>/i', "\n", $value) ?? $value;
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$value = preg_replace('/<\s*p\b[^>]*>/i', '', $value) ?? $value;
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@ -1605,6 +1620,28 @@ class Ipd_discharge extends BaseController
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return trim($value);
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}
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/**
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* Render rich text content for HTML output.
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* Detects if content is HTML (from HTML editor) or plain text (from textarea).
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* HTML content is preserved, plain text is escaped and nl2br applied.
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*/
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private function renderRichText(string $text): string
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{
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$text = trim($text);
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if ($text === '') {
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return '';
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}
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// Check if content contains HTML tags (from HTML editor)
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if (preg_match('/<(?:p|div|span|strong|b|i|em|ul|ol|li|table|tr|td|th|thead|tbody|h[1-6])\b[^>]*>/i', $text)) {
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// Content is HTML - return as-is (already sanitized by normalizeRichText)
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return $text;
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}
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// Content is plain text - escape and convert newlines to br
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return nl2br(esc($text));
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}
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private function addListSection(array &$sections, string $title, array $rows): void
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{
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if (empty($rows)) {
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@ -1750,7 +1787,7 @@ class Ipd_discharge extends BaseController
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$remark = trim($remark);
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if ($remark !== '') {
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$lines[] = nl2br(esc($remark));
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$lines[] = $this->renderRichText($remark);
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}
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if ($lines === []) {
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@ -1893,7 +1930,7 @@ class Ipd_discharge extends BaseController
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continue;
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}
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$sysHtml .= '<div class="discharge-item">' . nl2br(esc($value)) . '</div>';
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$sysHtml .= '<div class="discharge-item">' . $this->renderRichText($value) . '</div>';
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}
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if ($sysHtml !== '') {
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$sections[] = '<h4 class="discharge-section-heading">Other / Systemic Examinations</h4>' . $sysHtml;
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@ -2055,7 +2092,7 @@ class Ipd_discharge extends BaseController
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$otherExamText = $this->normalizeRichText((string) ($otherExamParsed['text'] ?? ''));
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if ($otherExamText !== '') {
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$html .= '<div><b>Other Examinations / Provisional Diagnosis:</b><br>' . nl2br(esc($otherExamText)) . '</div>';
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$html .= '<div><b>Other Examinations / Provisional Diagnosis:</b><br>' . $this->renderRichText($otherExamText) . '</div>';
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}
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$sections[] = $html;
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@ -2073,7 +2110,7 @@ class Ipd_discharge extends BaseController
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$inhosRemark = $this->normalizeRichText((string) ($inhosRow['comp_remark'] ?? ''));
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if ($inhosRemark !== '') {
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$sections[] = '<h4 class="discharge-section-heading">Summary of key investigations during Hospitalization</h4><div>'
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. nl2br(esc($inhosRemark))
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. $this->renderRichText($inhosRemark)
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. '</div>';
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}
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